ROAD SAFETY AUDIT
Route 28 (Fellsway)/Mystic Avenue/McGrath Highway
City of Somerville
September 30, 2015
Prepared For:
MassDOT
On Behalf Of:
Federal Realty Investment Trust
Prepared By:
VHB, Inc.
101 Walnut Street
Watertown, MA 2472
Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Table of Contents
Contents
Background ............................................................................................................................ 1
Project Data............................................................................................................................ 1
Project Location and Description .......................................................................................... 2
Roadway Characteristics ................................................................................................................ 5
Bus Facilities ................................................................................................................................. 5
Traffic Volumes ............................................................................................................................. 6
Crash History ............................................................................................................................... 10
Audit Observations and Potential Safety Enhancements ................................................... 13
Safety Issue #1: Driver Behavior ............................................................................................ 13
Safety Issue #2: Bicycle Accommodations ............................................................................. 14
Safety Issue #3: Intersection Geometry .................................................................................. 15
Safety Issue #4: Signage & Pavement Markings ..................................................................... 17
Safety Issue #5: Pedestrian Accommodations ......................................................................... 18
Safety Issue #6: Traffic Signal Infrastructure and Operations ................................................. 21
Summary of Road Safety Audit ........................................................................................... 23
List of Appendices
Appendix A
Appendix B.
Appendix C.
Appendix D.
Appendix E.
RSA Meeting Agenda
RSA Audit Team Contact List
Detailed Crash Data
Additional Information
Road Safety Audit References
List of Figures
Figure 1: Locus Map ............................................................................................................................ 3
Figure 2: Existing Conditions & Traffic Control ................................................................................... 4
Figure 3: Existing Weekday Morning Peak Traffic Volumes................................................................. 7
Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Figure 4: Existing Weekday Evening Peak Traffic Volumes ................................................................. 8
Figure 5: Existing Saturday Midday Peak Traffic Volumes ................................................................... 9
List of Tables
Table 1: Participating Audit Team Members ......................................................................................... 2
Table 2: Roadway Functional Classification and Jurisdiction ................................................................ 5
Table 3: Vehicular Speeds .................................................................................................................... 5
Table 4: Existing Traffic Volume Summary.......................................................................................... 6
Table 5: Intersection Crash Rate ......................................................................................................... 10
Table 6: Vehicular Crash Summary (2008-2012) ................................................................................ 11
Table 7: Estimated Time Frame and Costs Breakdown........................................................................ 23
Table 8: Potential Safety Enhancement Summary – Overall Interchange ............................................. 24
Table 9: Potential Safety Enhancement Summary – Mystic Ave/Connector “A” at Mystic Ave NB..... 26
Table 10: Potential Safety Enhancement Summary – Mystic Ave/Connector “A” at Wheatland St ...... 26
Table 11: Potential Safety Enhancement Summary – Mystic Ave/Connector “A” at Fellsway SB ....... 26
Table 12: Potential Safety Enhancement Summary – Mystic Ave SB at McGrath Highway NB .......... 27
Table 13: Potential Safety Enhancement Summary – Mystic Ave SB at Kensington Ave X-Walk ....... 27
Table 14: Potential Safety Enhancement Summary – Fellsway at Mystic Ave NB/I-93 Off-Ramp ....... 28
Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Background
As part of the on-going revitalization and development of the Assembly District in Somerville, VHB and
Federal Realty Investment Trust (FRIT) are seeking modifications to Mystic Avenue (Route 38) to
improve egress to Interstate I-93 from the mixed-use development. The Massachusetts Department of
Transportation Highway Division (MassDOT) and Safety Engineering 25% Design Submission
Guidelines require a Road Safety Audit (RSA) to be performed at all project-impacted locations if
identified as high-crash locations on the Highway Safety Improvement Program (HSIP). The intersection
of Fellsway (Route 28) and Mystic Avenue in Somerville has routinely had a history of high crashes and
is currently ranked fourteenth in the Commonwealth’s Top 200 High Crash Location listing.
Defined by the Federal Highway Administration (FHWA) as a “formal safety performance examination
of an existing or future road or intersection by an independent, multidisciplinary team”, an RSA
investigates safety issues and identifies potential safety improvements. The finding of an RSA may be
used as part of a current design process to address existing issues and provide safety enhancements to the
area. The City of Somerville Engineering and Public Works departments, the Department of Conservation
and Recreation (DCR), and MassDOT could implement additional safety measures outside of any
Assembly Row mitigation improvements to improve safety and delays throughout the intersection.
Project Data
An RSA was conducted on September 30, 2015 at the intersection of the Fellsway (Route 28) with Mystic
Avenue (Route 38), with pre- and post-audit meetings held at the La Quinta Inn adjacent to the project
location. The specific agenda for the day may be found in Appendix A. In total, eleven team members
participated in the road safety audit, and as indicated in Table 1, representatives were present from State,
Regional and Local agencies and included a cross-section of engineering/planning, operations, and
enforcement expertise. A complete list of contact information for the participants may be found in
Appendix B.
Prior to the day of the RSA, VHB compiled crash data for the audit area intersections using Crash Reports
from January 2008 through December 2012 obtained from MassDOT. From this data, Collision Diagrams
were prepared and the crash history was summarized in tabular and chart format. This material in addition
to existing motor vehicle counts was distributed to all RSA invitees. A detailed discussion of crash history
along the corridor is provided herein and all backup crash data are included in Appendix E.
A pre-audit meeting was held on the morning of the RSA prior to the site walk with all participants to
review the materials provided by MassDOT. Participants were reminded that the RSA is a collaborative
effort to help ensure a thorough understanding of the corridor deficiencies and safety concerns. As an
active discussion, participants provided an initial list of specific issues and concerns.
Armed with the list of the participants’ issues and concerns and the MassDOT Safety Review Prompt
List, the audit team walked the corridor to point out the safety issues identified in the pre-meeting and
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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expand the list to include additional items. Following the site walk, participants held a post-meeting to
discuss potential short-term and intermediate/long-term countermeasures for each safety concern.
Table 1: Participating Audit Team Members
Audit Team Member
Agency/Affiliation
John Mastera
William Ullom
Sara Timoner
Promise Otaluka
Brad Rawson
James Polito
Charles Breen
Brendan Kearney
Patrick Dunford
Tim McIntosh
Erin Thompson
MassDOT Highway Safety
MassDOT Highway Safety
MassDOT District 4
FHWA
City of Somerville, Mayor’s Office
Somerville Police Department
Somerville Fire Department
Walk Boston
VHB
VHB
VHB
Project Location and Description
Somerville is a Massachusetts community with a population of 78,804 (2013 US Census) located in
Middlesex Country, located two miles northwest of Boston. The Fellsway and McGrath Boulevard
(Route 28) provide a vital north-south link for communities to access other regional roadways (including
Interstate I-93), shopping centers, business and educational facilities. Mystic Avenue provides a similar
connection parallel to I-93. The RSA focused on an approximately 1,250-foot section of Mystic Avenue
(Route 38), from Grant Street to Kensington Avenue, including the interchange with Route 28/I-93
Ramps. Refer to Figure 1.
The intersection where Mystic Avenue northbound joins Mystic Avenue/Connector “A” near Grant Street
at the northerly limits of the project area, and the Kensington Avenue pedestrian crossings at the southerly
limits of the project area were also part of the RSA.
The interchange of Mystic Avenue (Route 38) with Fellsway/McGrath (Route 28) and I-93 ramps was
originally built in the early 1970s as part of the construction of I-93. As illustrated in Figure 2, the
interchange is comprised of four at-grade signalized intersections operated by a single traffic signal
controller owned and maintained by the DCR:
1. Mystic Avenue at Wheatland Street/Auxiliary Connector “E”
2. Mystic Avenue at Fellsway Southbound
3. Mystic Avenue at McGrath Highway Northbound
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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Figure 1: Locus Map
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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Figure 2: Existing Conditions & Traffic Control
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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4. Fellsway Southbound at Mystic Avenue Northbound/I-93 Off-ramp (Connector “H”)
The intersection is semi-actuated, with vehicle detection only on the McGrath Northbound approach. It is
interconnected with traffic signals along McGrath Highway (master controller located at McGrath
Highway and Broadway) to the south of interchange and time-base coordinated with the intersection of
the Fellsway at Grand Union Boulevard and Middlesex Avenue to the north.
Roadway Characteristics
Table 2: Roadway Functional Classification and Jurisdiction
Roadway
Classification
Jurisdiction
Fellsway (Route 28)
Mystic Avenue
I-93 Access/Egress Ramps
McGrath Highway mainline
McGrath Highway NB ramps to Mystic Ave
Principal Arterial
Urban Minor Arterial
Urban Minor Arterial
Principal Arterial
Urban Minor Arterial
DCR
City of Somerville
MassDOT
MassDOT
City of Somerville
Within the project area, the Fellsway and McGrath Highway are also part of the National Highway
System.
Special Speed Regulation No. 18, dated November 28, 1950 provided by MassDOT indicates that Mystic
Avenue is regulated for 25 mph within the project area, however the roadway is currently posted at 30
mph. No information was provided for the Fellsway or McGrath Highway. Motor vehicle speeds were
collected over a period of 48 hours at six locations within the project area. 85th and 95th percentile speeds
are presented in Table 3.
Table 3: Vehicular Speeds
Roadway
Fellsway SB to Rte 28 SB, north of Mystic Ave
Fellsway SB to Rte 38 SB, north of Mystic Ave
Fellsway SB to Rte 38 SB, under I-93
Mystic Ave SB, south of Wheatland St
Mystic Ave NB, south of I-93 off-ramp
I-93 Off-ramp, south of Mystic Ave
85th Percentile
41 mph
43 mph
36 mph
31 mph
35 mph
35 mph
95th Percentile
46 mph
48 mph
41 mph
36 mph
39 mph
39 mph
Bus Facilities
The Massachusetts Bay Transportation Authority (MBTA) has a bus route along Mystic Avenue. MBTA
Bus Route 95 operates everyday between West Medford and Sullivan Square via Medford Square with
varying headways. There are stops located at Temple Street, just to the west of the project area, and near
Kensington Avenue just to the east of the project. There is an inbound stop located at Wheatland Street,
and an outbound stop located on Mystic Avenue Northbound just prior to Auxiliary Connector “E”. The
fall 2015 map and schedule may be found in Appendix D.
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Traffic Volumes
Traffic volume data was collected in April 2015 on a typical weekday and Saturday. Turning movement
counts (TMC) were collected at each of the four signalized nodes at two hour intervals during the AM and
PM Weekday Peak and Saturday midday Peak hours. Based on these counts, the study area intersection
weekday morning peak, weekday evening peak, and weekend midday peak hours were determined to be
7:00 AM to 8:00 AM, 5:00 PM to 6:00 PM, and 12:00 PM to 1:00 PM respectively. Figures 3 through 5
summarize the observed turning moment volumes. To get an understanding of the daily volumes along
the roadway segments, Automatic Traffic Records (ATR) were used for a minimum period of 3 days. The
daily traffic volumes are detailed in Table 4. The raw traffic data are presented in the Appendix D.
Table 4: Existing Traffic Volume Summary
Peak Hour
Daily (vpd)
Location
Fellsway SB,
north of Mystic Ave
Fellsway SB
to Route 38 SB
(Connector “F”)
I-93 NB Off-Ramp
(Connector “H”),
south of Mystic Ave
Mystic Ave NB,
south of I-93 NB Off-Ramp
Mystic Ave SB,
south of Wheatland St
Weekday Morning Weekday Evening
Saturday Midday
Volume
Volume
Volume
(vph) K-Factor (vph) K-Factor (vph) K-Factor
Weekday
Weekend
33,350
33,185
2,790
8.4%
2,040
6.1%
2,390
7.2%
15,435
15,735
1,300
8.4%
995
6.4%
1,145
7.3%
6,550
6,620
335
5.1%
550
8.3%
450
6.8%
4,715
5,065
310
6.6%
375
8.0%
430
8.5%
19,160
15,445
1,555
8.1%
1,555
8.1%
1,220
7.9%
ATR Peak hour data shown above are the highest hourly volume occurring before or after noon on a
weekday and on a Saturday. These peaks do not necessarily correlate with peak hour volumes obtained
from TMCs which were collected during typical commuter and shopping periods.
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Figure 3: Existing Weekday Morning Peak Traffic Volumes
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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Figure 4: Existing Weekday Evening Peak Traffic Volumes
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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Figure 5: Existing Saturday Midday Peak Traffic Volumes
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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Crash History
Historical crash data was obtained from the Registry of Motor Vehicle through MassDOT for the study
area from January 2008 through December 2012 and are provided in Appendix E. The intersection of
Mystic Avenue at Fellsway is ranked 14th on the Commonwealth’s Statewide Top Crash Locations in
2012.
A tool to measure the relative safety of an intersection is the comparison of a calculated crash rate with
the State and District average. Using standard MassDOT formulas, Table 5 summarizes the intersection
crash rates, in the unit of crashes per million entering vehicles, calculated for the audit area intersections.
The current official statewide crash rate is 0.80 for signalized intersections and 0.60 for unsignalized
intersections. The District 4 average (the MassDOT District designation for Somerville) crash rate for
signalized intersections is 0.77, and is 0.58 for unsignalized locations.
As shown in the table below, one of the audit area intersections is above both the State and District
average. Crash trends and contributing factors to the collisions can be identified through the analysis of
the Crash Reports. The Collision Diagrams were prepared prior to the RSA were used to perform an indepth analysis of the reported crashes.
Table 5: Intersection Crash Rate
Intersection
5-year Crash History Crash Rate
Mystic Ave/Connector “A” at Mystic Ave NB/Grant Street
31
0.54
Mystic Ave at Wheatland Street/Aux Connector “E”
Mystic Ave at Fellsway SB
10
25
0.22
0.34
Mystic Ave at McGrath Highway NB
Route 28 SB/Route 38 SB merge (Kensington Ave)
14
12
0.30
0.18
Fellsway at Mystic Ave NB/I-93 Off-ramp(Connector ”H”)
127
1.64
Table 6 summarizes the crashes by type, severity, time-of-day and pavement conditions. Following the
table is a breakdown of the crashes for trends and possible contributing factors.
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Table 6: Vehicular Crash Summary (2008-2012)
Mystic Avenue at
Mystic Ave
NB
A
Wheatland
B
Fellsway SB
C
McGrath
Hwy NB
D
Kensington
Ave
E
Fellsway at
Mystic Ave
NB/I-93 OffRamp
F
Year
2008
2
5
1
2
0
19
2009
2010
9
5
2
2
5
8
4
6
6
1
23
24
2011
2012
Collision Type
9
6
0
1
6
5
0
2
1
4
18
43
Angle
Head-on
Rear-end
Sideswipe
Single-vehicle crash
Pedestrian
Bicyclist
Other/Unknown
Severity
10
1
16
2
0
1
0
1
8
0
1
0
0
0
1
0
10
1
11
2
1
0
0
0
6
0
6
1
1
0
0
0
3
0
1
1
5
2
0
0
87
3
25
8
4
0
0
0
Fatal
Injury
Property-related
Time of day
0
12
19
0
3
7
0
10
15
0
3
11
0
3
9
1
60
66
Weekday, 7AM - 9AM
Weekday, 4PM - 6PM
Saturday, 11AM - 2PM
Weekday, other time
Weekend, other time
Pavement Conditions
2
3
5
17
4
0
0
0
8
2
3
6
0
13
5
0
1
0
7
6
2
0
0
6
4
0
15
8
70
34
Dry
Wet
Snow
Unknown
26
4
0
1
7
3
0
0
17
7
1
0
11
3
0
0
10
1
1
0
99
24
3
1
A. Mystic Avenue/Connector “A” at Mystic Avenue Northbound and Grant Street – From
January 2008 through December 2012 there were thirty-one reported crashes at the unsignalized
intersection of Mystic Avenue at Mystic Avenue Northbound and Grant Street. This intersection
had a lower crash rate that the District average (0.58) at 0.54. The majority of crashes were rear-
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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end collisions (16 of 31) followed by angled collisions (10 of 31). Most collisions occurred
between either Mystic Avenue Northbound traffic or between vehicles merging together in the
northbound direction, where sight distance for drivers on Mystic Avenue Northbound may be
impacted by the approach angle. Five collisions occurred between a vehicle travelling southbound
on Mystic Avenue and a vehicle turning left from Grant Street. Excessive speed of approaching
vehicles and on-street parking may be combining to inhibit sight distance for drivers on Grant
Street.
There was one “hit and run” crash and one crash with a pedestrian. The pedestrian crash occurred
mid-block when the pedestrian attempted to traverse the street outside of the marked crosswalks.
B. Mystic Avenue at Auxiliary Connector “E” and Wheatland Street - From January 2008
through December 2012 there were ten reported crashes at the signalized intersection of Mystic
Avenue at Auxiliary Connector “E” and Wheatland Street. This intersection had a lower crash
rate that the District average (0.77) at 0.22. The majority of crashes were angled collisions (8 of
10). At least four of the angled collisions can be contributed to a driver running the red light.
There was one crash with a bicyclist, where the bicyclist hit a vehicle exiting Wheatland Street on
a green signal indication.
C. Mystic Avenue at Fellsway Southbound - From January 2008 through December 2012 there
were twenty-five reported crashes at the signalized intersection of Mystic Avenue at Fellsway
Southbound. This intersection had a lower crash rate that the District average (0.77) at 0.34. The
majority of crashes were rear-end collisions (11 of 25) followed by angled collisions (10 of 25).
Most rear-end collisions occurred on Mystic Avenue southbound, which is not unusual for a
signalized intersection and may be a result of improper yellow and/or red clearance intervals. At
least seven angled collisions can be contributed to a driver running the red light.
There was one crash with a pedestrian. The pedestrian crash occurred west of the intersection on
McGrath Highway when the pedestrian attempted to traverse the street outside of a marked
crosswalk.
D. Mystic Avenue at McGrath Highway Northbound -From January 2008 through December
2012 there were fourteen reported crashes at the signalized intersection of Mystic Avenue at
McGrath Highway northbound. This intersection had a lower crash rate that the District average
(0.77) at 0.30. The majority of crashes were either rear-end collisions (6 of 14) or angled
collisions (6 of 14). Most rear-end collisions occurred on McGrath Highway northbound. Rearend and angle-type collisions at signalized intersections may be a result of excessive vehicle
speeds, improperly timed clearance intervals, and/or driver distraction/failure to adhere to traffic
control devices.
E. Mystic Avenue Southbound at Route 28 merge/Kensington Avenue Pedestrian crossings –
From January 2008 through December 2012 there were twelve reported crashes at the
unsignalized merge of Mystic Avenue southbound and Ramp “F” from Fellsway southbound.
This intersection had a lower crash rate that the District average (0.58) at 0.18. The majority of
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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crashes were single-vehicle collisions (5 of 12).
There were two pedestrian crashes and in both instances, the pedestrian was crossing outside of a
marked crosswalk at night.
F. Fellsway at Mystic Avenue Northbound/I-93 Off-Ramp (Connector “H”) - From January
2008 through December 2012 there were 127 reported crashes at the signalized intersection of
Fellsway Southbound at Mystic Avenue Northbound and I-93 Off-Ramp. This intersection had a
higher crash rate that the District average (0.77) at 1.64. The majority of crashes were angled
collisions (87 of 127) followed by rear-end collisions (25 of 127). Rear-end and angle-type
collisions at signalized intersections may be a result of excessive vehicle speeds, improperly
timed clearance intervals, and/or driver distraction/failure to adhere to traffic control devices. At
least seventy-five angled collisions can be contributed to a driver running the red light. Two
drivers involved in a collision were cited for Operating under the Influence, and two collisions
were ‘hit and run’.
There was a fatal crash resulting from negligent operation of a motorcycle south of the
intersection, under I-93.
It is possible that additional crashes may have occurred but were not reported or were otherwise not
included in the MassDOT crash database.
Audit Observations and Potential Safety
Enhancements
Prior to the field walk, a pre-audit meeting was held at a
meeting room in the La Quinta Inn adjacent to the project area.
Crash history was reviewed and each participant was able to
share their concerns. The RSA team then walked the project
area as a group, highlighting roadway deficiencies and other
safety-related concerns. It should be noted that on September
30, 2015 there was significant rainfall that led to roadway
flooding along the Mystic Avenue Northbound/I-93 Off-Ramp
approach to the Fellsway and along the Fellsway from north of
the project area and continuing under I-93.
Image 1: Roadway Flooding Under I-93
Safety Issue #1: Driver Behavior
Observations
Based on the traffic data collected, the 85th percentile speeds within the project area vary between 30 and
45 mph, with some higher speeds noted, generally between 5am and 5pm, peak periods excluded.
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 Police stated distracted driving (including cellphone use) is an issue and contributes to the rearend collisions.
 Police perform constant enforcement in the area for speeding and distracted driving.
 During peak periods, drivers on northbound McGrath Highway will use the right-lane to bypass
the vehicle queue in the left lanes and then cut over to the right at the splitter island.
Enhancements
 Continue enforcement during strategic times as indicated from the collected speed data.
 Consider reduction in lane width as part of future roadway improvements and/or pavement
marking operations as a traffic-calming measure.
 Consider other traffic-calming measures such as speed cushions, driver speed feedback signs, and
additional plantings/trees in buffer spaces.
 Increase/relocate advanced signage for drivers to make better lane selection choices.
 Optimize traffic signal timing to reduce vehicle queues.
Safety Issue #2: Bicycle Accommodations
Observations
 Mystic Avenue - The cross section of Mystic
Avenue/Connector “A”, west of I-93 is generally two-
lanes each direction with minimal shoulder along the
northbound side and on-street parking along the
southbound side. The southbound approach widens to three-lanes at the Fellsway. There is a raised median
of varying width between Grant Street and McGrath Highway. It was noted by the City that cyclists avoid Mystic Avenue for lack of bicycle accommodations.
Image 2: Mystic Ave, looking north
Fellsway/McGrath Highway – The Fellsway Southbound is generally 3-lanes but widens to 5 lanes
on the approach to Mystic Avenue. McGrath Highway
southbound is 3-lanes while McGrath highway
northbound widens to 5 lanes approaching Mystic
Avenue. Existing shoulders are not wide enough to
accommodate cyclists. There are high speeds along both of these roadways.
Image 3: Fellsway, looking north
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Enhancements
 Consider eliminating on-street parking to provide a bike-able shoulder on Mystic Avenue
southbound.
 Consider eliminating a travel lane on the Fellsway southbound and McGrath Highway to reduce
vehicle speeds and provide bike-able shoulders.
 Consider narrowing travel lanes and/or widening all roadways where necessary to provide bicycle
accommodations.
Safety Issue #3: Intersection Geometry
Observations
There are four areas where intersection geometry generates a safety concern:
 Mystic Avenue Northbound/Connector “H” at Fellsway Southbound –
The Fellsway southbound approach is 5 lanes
wide with a flared right-turn at the intersection
with Mystic Avenue Northbound, creating a
long intersection for Mystic Avenue drivers.
This may be contributing to the significant
number of red-light running occurrences and
angle collisions. The existing fence around the
Fellsway northbound tunnel precludes drivers
on either approach from seeing the other
approach with sufficient time to react to a redlight violation. Police noted several instances Image 4: Fellsway SB approaching
Mystic Ave NB
of drivers turning right onto the Fellsway
(wrong-way) and crash history suggests a few Fellsway drivers have turned left (wrong­
way) onto Mystic Avenue.
 Mystic Avenue (Connector “A”) at Mystic Avenue northbound (near Grant Street) ­
The approach angle of Mystic Avenue
Northbound causes a driver to look over their
left shoulder to be able to see conflicting
traffic. This geometry contributes to rear-end
collisions as following drivers assume leading
drivers take the same gap in traffic. The
approach is also wide enough to allow two
lanes of traffic, which was observed even
during off-peak periods. This coupled with a
strong desire for traffic to turn left onto
Temple Street downstream creates a
Image 5: Mystic Ave NB Merge
weave/merge scenario with drivers already on
Mystic Avenue northbound.
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 Mystic Avenue Southbound/Connector “A” at Fellsway Southbound –
The right-turn from Mystic Avenue
southbound to McGrath Highway southbound
is a large radius, enabling vehicles to make the
right at a high rate of speed. Also, the elevated
I-93 creates a sight-distance issue for the rightturning vehicles to be able to see approaching
Fellsway southbound traffic. Either or both of
issues may be contributing to the anglecollision occurrences. The lane configuration
for Mystic Avenue Southbound is: exclusive
thru lane, shared thru-right lane, and an
Image 6: Mystic Ave SB to McGrath
exclusive right-turn lane. The need for double- Hwy SB Sweeping Right Turn
rights and the 3 lanes on McGrath Highway
departing the intersection was questioned by the RSA participants during the field walk.
 Mystic Avenue Southbound at Kensington Avenue Pedestrian Crossing ­
The Mystic Avenue southbound approach
provides access to the I-93
collector/distributor roadway (Connector “F”),
Route 38 southbound into Sullivan Square,
and the loading dock of the adjacent grocery
store, resulting in a pavement width of
approximately 35’ at the crosswalk. Vehicles
are accelerating from the intersection McGrath
Image 7: Mystic Ave SB at
Highway and repeatedly have been observed
Kensington Ave Ped X-ing
ignoring pedestrians waiting to cross and in
the crosswalk. When a driver does stop for a pedestrian, other drivers go around the
stopped vehicle, not seeing the pedestrian. Drivers have been observed making this
approach three or four lanes wide.
Enhancements
 Increase size/visibility of One-Way/Wrong Way signage at Fellsway and Mystic Avenue
Northbound/Connector “H”
 Realign Mystic Avenue northbound to decrease the skew with Mystic Avenue (Connector “A”).
 Consider pavement markings (e.g. wide, gore-marked shoulders) to visually narrow Mystic
Avenue Northbound (near Grant Street) to a single lane.
 Decrease the corner radii between Mystic Avenue Southbound and McGrath Highway Southbound
 Post Mystic Avenue southbound “No Turn on Red” sign at McGrath Highway Southbound
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Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
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 Eliminate double right-turn from Mystic Avenue Southbound to McGrath Highway Southbound
to increase sight distance for right-lane turning traffic
 Define Mystic Avenue Southbound at the Kensington Avenue crosswalk as two lanes by one or a
combination of the following:
 Construct bulb-out on west side of roadway, either raised or with pavement markings
 Extend splitter median between Mystic Avenue Southbound and Connector “C”, either
raised or with pavement markings
 Consider raised crosswalk for Kensington Avenue crosswalk
Safety Issue #4: Signage & Pavement Markings
Observations
It was noted that generally pavement markings are in poor condition and guide signage is minimal.
Specific issues noted include the following:
 Signage: Ground-mounted guide signage is small and generally too close to the intersection for drivers to
align themselves in the proper lanes. On McGrath
Highway northbound this often results in drivers crossing the gored area to make their desired turn.
There is also repetitive signage (such as multiple graphical no-turn signage on a single approach) and
unnecessary signage (such as the outdated Tobin Bridge detour sign).
 Pavement Markings: Pavement markings were noted as being in poor condition or missing in many areas
within the interchange. The lack of markings
contribute to drivers creating additional lanes such as
on the Mystic Avenue Northbound approach to Connector “A” or restricting intersection capacity by
straddling multiple lanes such as the Mystic
Avenue/Connector “H” approach to the Fellsway Southbound.
Image 8: McGrath Hwy NB Signage
Image 9: Mystic Ave /I-93 Off-Ramp
Pavement Markings
Page 17
Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Enhancements
 Update all signage to meet standards in the current MUTCD
 Conduct an inventory of all existing signage and consider removing any repetitive and/or
unnecessary signage
 Provide pavement markings throughout interchange to define lanes and shoulders
Safety Issue #5: Pedestrian Accommodations
Observations
Sidewalks are not provided consistently along Mystic Avenue
on both sides of the elevated I-93. While the existing
sidewalks are in decent condition, there are either no
pedestrian curb ramps or non-compliant curb ramps at the
crossing locations. Under I-93, sidewalks are in reasonable
condition. However, at several locations there is insufficient
space provided between guardrail and bridge piers for
adequate passage. Also, many pedestrian routes do not follow
pedestrian desire lines and require multi-stage crossings as
sidewalk is not continuous along both sides of each roadway.
It was noted that two pedestrian fatalities occurred along the
Fellsway, just north of the study area, suggesting the need for
better connectivity and crosswalks between the Ten Hills
neighborhood and the Assembly Row development.
Image 10: No Pedestrian Curb Ramp
Pedestrian push buttons are not present for many of the
signalized crosswalks and WALK indications are on automatic
recall. Where crossing do have push buttons, they did not
appear to be operational. Where pedestrian signal heads are
present, phasing is concurrent with vehicular traffic however
WALK and flashing DON’T WALK indications are truncated
significantly prior to the parallel green indication. Pedestrian
Image 12: Multi-stage Pedestrian
Crossing
signal heads are not equipped with countdown timers. The
intersection of Fellsway at Mystic Avenue Northbound/I-93
Off-Ramp does not have pedestrian signal heads or push
buttons but there are smaller signal heads facing crosswalks to
indicate to pedestrians which approach has the green
indication. The Fellsway Southbound is generally 3-lanes but
widens to 5 lanes on the approach to Mystic Avenue. This
leads to higher vehicles speeds and a long pedestrian
crosswalk but is likely needed to support vehicle queues
Image 11: Fellsway Pedestrian
during peak periods.
Indications
Page 18
Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
During the RSA field-walk at the signalized intersections,
turning vehicles (whether during green or as right-on-red) did
not consistently yield to pedestrians lawfully within the
crosswalks. Drivers also did not stop for pedestrians
attempting to cross at the Kensington Avenue crosswalks
despite activation of the warning beacons and/or would drive
around vehicles that did stop. Landscaping along the Stop &
Shop frontage may obscure visibility of both a pedestrian
waiting to cross and the flashing warning beacon on the south
side of the roadway for drivers turning right onto Mystic
Avenue southbound from McGrath Highway northbound.
Image 13: RSA Participants crossing
at Kensington Avenue
The Kensington Avenue pedestrian crosswalks are equipped
with flashing beacon warning indications that are passively
activated. There appears to be a delay from when a pedestrian
seemingly enters the zone of detection and the activation of the
warning beacons. Two of the sign assemblies are missing the
accompanying pedestrian crossing sign. The City of
Somerville is currently working with the MassDOT Office of
Real Estate and Development to “humanize” the pedestrian
passage under I-93. Pedestrian volumes are expected to
increase with more development in Assembly Row. Based on Image 14: Missing Pedestrian
Signage
the information presented in this RSA, improvements
involving safety upgrades to the street/ramp crossings at the
Kensington Avenue connection also may be considered by
MassDOT in this vicinity.
The RSA team also noted the wide off-ramp from I-93 NB to
Route 28 NB (Ramp “E”). There are no edge line markings
denoting the approach as a single lane. Crosswalk signage is
also not compliant with the current MUTCD.
There are a few MTBA bus stops within or adjacent to the
study area. One northbound stop, that services the Ten Hills
Image 15: Ramp “E” Crossing
neighborhood, is located under I-93 at the split between Mystic
Avenue Northbound and Auxiliary Connector “E”. There are
no pedestrian amenities as the stop primarily consists of a
break in the highway guardrail.
Enhancements
 Evaluate pedestrian desire lines to determine appropriate crosswalk placement.
 Provide pedestrian wayfinding signage/pavement
Image 16: Ten Hills Bus Stop
Page 19
Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
markings to guide pedestrians through complex roadway network.
 Upgrade existing sidewalks and curb cuts to meet current ADA Standards.
 Construct sidewalks on both sides of the roadways within the interchange area.
 Upgrade pedestrian signal heads to countdown timers.
 Upgrade/provide Accessible Pedestrian Signals (APS)
 Retime pedestrian phasing to maximize crossing time.
 Prohibit right turns on red, especially from Mystic Avenue southbound to McGrath Highway.
 Replace missing pedestrian crossing warning signs.
 Evaluate operation of passive pedestrian detectors at flashing warning beacons
 Construct bulb-out on Stop & Shop side of Kensington Avenue crosswalk to increase sight
distance and decrease pedestrian crossing distance.
 Consider raised crosswalk at Kensington Avenue crossing.
 Consider Pedestrian Hybrid WALK Beacon at Kensington Avenue crossing.
 Restripe Ramp “E” to visually narrow the roadway and define a single lane of traffic.
 Update crossing signage for crosswalk on Ramp “E”, consider overhead signage.
 Consider increased pedestrian accommodations at bus stop locations.
Page 20
Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Safety Issue #6: Traffic Signal Infrastructure and Operations
Observations
The four signalized intersections of the Fellsway
(Route 28)/Mystic Avenue/I-93 interchange generally have not
seen significant updates since construction. Mast arms present
west of I-93 are Type I aluminum, which have minimal
capacity to support overhead signal indications. Many
approaches do not have overhead signal indications. A
previous phase of the Assembly Row redevelopment replaced
post-mounted signal indications with overhead signal heads
Image 17: Mystic Avenue SB Signal
mounted on a Type 2 steel mast arm east of I-93 for the
Indications
Fellsway southbound and Mystic Ave Northbound/Connector
“H” approaches. The current MUTCD recommends an overhead signal head for each lane of travel. As
seen in Image 17, the three-lane approach of Mystic Avenue southbound to the Fellsway only has two
indications, one of which is overhead.
There is an assortment of sizes of signal indications, types of
pedestrian signal heads, and colors of equipment. Some
equipment is in poor condition but the majority of signal
indications were active. The DON’T WALK indication was
out in the center median at the crosswalk across Mystic
Avenue southbound at Fellsway southbound. The intersection
is also a semi-actuated operation, increasing driver and
pedestrian delay.
Several recorded vehicle collisions can likely be attributed to
red-light running. This is a concern especially at the Fellsway
Southbound and Mystic Avenue Northbound/Connector “H”
intersection, where 75 of the 127 mostly angle-type recorded
collisions can be attributed to red-light running. The yellow
and red clearance intervals may not be appropriate for each
Image 18: Example of Condition
movement. All four signalized intersection within the
interchange are controlled by a single traffic signal controller, limiting the capability of providing
appropriate red and yellow clearance intervals for each approach and overall sequencing of operations
throughout the interchange.
It was noted that pedestrian crossing time did not seem appropriate for all crosswalks, which is also a
result of using a single controller for the four intersections. Crosswalks across the Fellsway are much
longer than crossings that occur during the same traffic signal phase at Wheatland/Auxiliary Connector
“E” and McGrath Highway.
Page 21
Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Another possible cause of red-light running is poor signal head
visibility. When travelling south on the Fellsway, a driver
passes beneath I-93 but the signal indications are located on
the other side of the overpass, where the change from dark to
light can mask the presence and/or color of signal indications.
Enhancements
 Upgrade existing signal equipment to provide 12”
vehicular indications.
Image 19: View under I-93
 Provide vehicle detection for all approaches.
 Upgrade existing signal equipment to provide at least one overhead signal indication for each
lane.
 Install retroreflective back plates on all existing signal heads.
 Calculate the appropriate yellow and red clearance intervals for each approach/movement.
 Evaluate traffic signal phasing to provide appropriate clearing intervals between intersections.
 Evaluate the feasibility of providing a coordinated signal system with separate controllers for
each intersection.
 Perform a systems evaluation on the feasibility an adaptive signal system.
Page 22
Road Safety Audit—Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Summary of Road Safety Audit
Following the site walk, participants returned to the meeting room to review the safety issues identified
and to recommend potential countermeasure improvements. Participants were challenged to come up not
only with long term (greater than three years into the future) improvements that could be incorporated
into the larger design project (or future projects), but also to identify short-term (less than one year) or
intermediate (one to three years into the future) improvements that could be implemented as soon as
possible and before the reconstruction efforts begin.
All discussed improvements were categorized by the following time frames: short-term, intermediate, and
long-term. Long-term improvements are likely to be associated with future TIP projects and/or as
mitigation for future development projects. As Route 28 is a State Highway, the majority of
improvements are called out as being the responsibility of MassDOT/DCR. Suggested enhancements that
impact City roads would likely be the responsibility of the City.
Enhancements were also assigned a cost category, as identified in Table 7.
Table 7: Estimated Time Frame and Costs Breakdown
Time Frame
Costs
Short-Term (ST)
Mid-Term (MT)
<1 Year
1-3 Years
Low
Medium
<$10,000
$10,001-$50,000
Long-Term (LT)
>3 Years
High
>$50,000
Recommendations for improving safety are summarized in Table 8 and are categorized based on
estimated safety payoff, time frame and cost for implementation. The responsible party for further action
has been identified as well. Recommendations for enhancements at specific intersections are summarized
in Tables 9 through 14.
Safety payoff estimates are subjective and based on the relative percent of crashes that may be reduced by
the enhancement. For major improvements, crash reduction factors are often available to assess the safety
payoff; however, for many minor enhancements a more subjective evaluation is needed. To provide a
general assessment of how a recommended enhancement would impact crash occurrences,
countermeasures have been assigned a Low, Medium, or High value on a subjective basis using
engineering judgment as it relates to potential crash reduction.
Countermeasures detailed in the summary tables involve Engineering, Maintenance, Enforcement,
Educational and/or Behavioral modifications that start with overall interchange considerations and
continue with location-specific items for consideration.
Selected countermeasures have been identified as potentially short-term, intermediate (potential
maintenance projects) and/or long-term.
Page 23
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Table 8: Potential Safety Enhancement Summary – Overall Interchange
Safety Issue
Driver Behavior
Driver Behavior
Driver Behavior
Driver Behavior
Bicycle Accommodations
Bicycle Accommodations
Bicycle Accommodations
Bicycle Accommodations
Signage & Pvm’t Markings
Signage & Pvm’t Markings
Signage & Pvm’t Markings
Potential Safety Enhancement
Perform Speed Study to determine
appropriate speed limit for
Fellsway and Mystic Avenue
Increase speed and distracted
driving enforcement
Narrow lane widths to calm traffic
Consider traffic calming measures
such as speed cushions, speed
feedback signs, and landscaping
Consider eliminating on-street
parking on Mystic Avenue
Southbound to provide bicycle
accommodations
Consider eliminating lanes on
Fellsway to provide bicycle
accommodations
Consider eliminating lanes on
McGrath Highway to provide
bicycle accommodations
Consider narrowing travel lanes
and/or widening roadways to
provide bicycle accommodations
Refresh all pavement markings
Update existing signage to reflect
current standards
Conduct inventory of all existing
signage and remove repetitive
and/or unnecessary signs
Safety Payoff
Time Frame
Cost
Responsible Agency
Med
MT
Low
MassDOT/DCR/City
Med
ST
Low
State & City Police
Low
ST
Low
MassDOT/City
Med
MT
High
MassDOT/DCR/City
Low
ST
Low
City
Med
ST
Low
DCR
Med
ST
Low
City
Med
LT
High
City/DCR
Low
MT
Med
MassDOT/DCR/City
Low
ST
Low
MassDOT
Low
ST
Low
MassDOT
Page 24
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Signage & Pvm’t Markings
Pedestrian
Accommodations
Pedestrian
Accommodations
Pedestrian
Accommodations
Pedestrian
Accommodations
Pedestrian
Accommodations
Pedestrian
Accommodations
Pedestrian
Accommodations
Traffic Signals
Traffic Signals
Traffic Signals
Traffic Signals
Remove
unneeded
Detour sign on
Mystic Ave SB
Low
ST
Low
City
Evaluate pedestrian desire lines
Med
MT
Med
MassDOT/City
Evaluate bus stop locations and
pedestrian amenities
Low
MT
Med
MassDOT/City/MBTA
Med
MT
High
MassDOT
Med
MT
High
MassDOT
Med
ST
Med
DCR
Low
MT
Low
DCR
Med
ST
Low
DCR
Med
LT
High
DCR
Med
ST
Low
DCR
Low
MT
High
DCR
Med
MT
Med
DCR
Construct continuous sidewalks on
both sides of the roadway
Upgrade existing sidewalks and
curb cuts to meet current ADA
standards
Upgrade existing signal heads to
include countdown timers
Upgrade existing pedestrian signal
equipment to provide APS
Retime pedestrian clearance
intervals
Upgrade traffic signal equipment to
provide overhead signal indication
for each lane
Install retroreflective back plates
on all existing and future signal
heads
Provide vehicle detection for all
approaches
Evaluate traffic signal phasing to
provide appropriate clearing
intervals between intersections
Page 25
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Traffic Signals
Traffic Signals
Re-calculate yellow and red
clearance intervals for all
approaches
Provide coordinated signal system
with separate traffic signal
controllers for each intersection
and evaluate Adaptive Control
System
High
ST
Low
DCR
Med
LT
High
DCR
Table 9: Potential Safety Enhancement Summary – Mystic Ave/Connector “A” at Mystic Ave NB
Safety Issue
Roadway Cross-Section
Intersection Geometry
Signage & Pvm’t Markings
Potential Safety Enhancement
Eliminate on-street parking to
improve sight-distance for drivers
exiting Grant Street
Realign Mystic Avenue
Northbound to lessen approach
angle
Define Mystic Avenue Northbound
as a single lane approach
Safety Payoff
Time Frame
Cost
Responsible Agency
Med
ST
Low
City
Med
LT
High
MassDOT/City
High
ST
Low
MassDOT/City
Table 10: Potential Safety Enhancement Summary – Mystic Ave/Connector “A” at Wheatland St
Safety Issue
Signage & Pvm’t Markings
Traffic Signals
Potential Safety Enhancement
Provide crosswalk on Wheatland
Street
Provide pedestrian indications
across Wheatland Street
Safety Payoff
Time Frame
Cost
Responsible Agency
Low
ST
Low
City
Low
MT
Med
DCR
Table 11: Potential Safety Enhancement Summary – Mystic Ave/Connector “A” at Fellsway SB
Safety Issue
Roadway Cross-section
Potential Safety Enhancement
Convert shared thru-right lane to
thru-only lane
Safety Payoff
Time Frame
Cost
Responsible Agency
Low
ST
Low
DCR/City
Page 26
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Intersection Geometry
Signage & Pvm’t Markings
Traffic Signals
Reduce corner radii to slow turning
vehicle speeds
Post Mystic Ave SB as “No Turn
on Red”
Repair darkened pedestrian signal
head
Med
MT
High
DCR/City
Med
ST
Low
DCR/City
Med
ST
Low
DCR
Table 12: Potential Safety Enhancement Summary – Mystic Ave SB at McGrath Highway NB
Safety Issue
Roadway Cross-section
Intersection Geometry
Signage & Pvm’t Markings
Potential Safety Enhancement
Construct sidewalk on south side
of intersection to eliminate multi­
stage pedestrian crossing
Reduce landscaping on Stop &
Shop corner to increase sight lines
to crosswalk
Relocate guide signage further
from intersection
Safety Payoff
Time Frame
Cost
Responsible Agency
Low
LT
High
DCR/City
Med
MT
Med
City
Med
ST
Low
City
Table 13: Potential Safety Enhancement Summary – Mystic Ave SB at Kensington Ave X-Walk
Safety Issue
Intersection Geometry
Intersection Geometry
Potential Safety Enhancement
Construct bump-out on south side
of roadway to increase sight-lines
and reduce pedestrian crossing
distance
Extend splitter median at
Connector “C” to define roadway
Safety Payoff
Time Frame
Cost
Responsible Agency
Med
LT
High
MassDOT/City
Med
MT
Med
MassDOT
Intersection Geometry
Construct raised crosswalk
Med
MT
Med
MassDOT/City
Signage & Pvm’t Markings
Define roadway as two-lanes
Med
ST
Low
MassDOT/City
Signage & Pvm’t Markings
Replace missing pedestrian
crossing signage
Med
ST
Low
MassDOT/City
Page 27
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Traffic Signals
Traffic Signals
Evaluate passive pedestrian
detection devices
Replace flashing beacon with
Pedestrian Hybrid WALK Beacon
Med
ST
Low
MassDOT
Med
MT
High
MassDOT
Table 14: Potential Safety Enhancement Summary – Fellsway at Mystic Ave NB/I-93 Off-Ramp
Safety Issue
Intersection Geometry
Signage & Pvm’t Markings
Potential Safety Enhancement
Investigate roadway flooding
reasons
Increase size of WRONG WAY
and DO NOT ENTER signage
Safety Payoff
Time Frame
Cost
Responsible Agency
Med
MT
High
MassDOT/DCR/City
Med
ST
Low
DCR/MassDOT
Page 28
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Appendix A. RSA Meeting Agenda
Page 29
Road Safety Audit
Somerville
Fellsway at Mystic Avenue
(Grant Street to McGrath Highway)
Meeting Location: La Quinta Hotel
23 Cummings Street, Somerville MA
September 30, 2015
10 AM – 2 PM
Type of meeting:
High Crash Location – Road Safety Audit
Attendees:
Invited Participants to Comprise a Multidisciplinary Team
Please bring:
Thoughts and Enthusiasm!!
10:00 AM
Welcome and Introductions
10:15 AM
Review of Site Specific Material
 Traffic Volume Summaries– provided in advance
 Crash History Summaries and Diagrams
11:00 AM
Visit the Site
 Walk to the corridor
 As a group, identify areas for improvement
12:30
Lunch Break, to be provided on site
1:00 PM
Post Visit Discussion / Completion of RSA
 Discuss observations and finalize findings
 Discuss potential improvements and finalize recommendations
2:00 PM
Adjourn for the Day – but the RSA has not ended
Instructions for Participants:
 Before attending the RSA on September 30, 2015, participants are encouraged to
drive through the corridor and complete/consider elements on the RSA Prompt
List with a focus on safety.
 All participants will be actively involved in the process throughout. Participants
are encouraged to come with thoughts and ideas, but are reminded that the
synergy that develops and respect for others’ opinions are key elements to the
success of the overall RSA process.
 After the RSA meeting, participants will be asked to comment and respond to the
document materials to assure it is reflective of the RSA completed by the
multidisciplinary team.
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Appendix B. RSA Audit Team Contact List
Page 30
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Participating Audit Team Members
Date:
Sept 30, 2015
Location:
Audit Team
Agency/Affiliation
Members
Name
John Mastera
William Ullom
Sara Timoner
Promise Otaluka
Brad Rawson
James Polito
Charles Breen
Brendan Kearney
Patrick Dunford
Tim McIntosh
Erin Thompson
Somerville, MA
Agency
MassDOT Highway Safety
MassDOT Highway Safety
MassDOT District 4
FHWA
City of Somerville, Mayor’s Office
Somerville Police Department
Somerville Fire Department
Walk Boston
VHB, Inc
VHB, Inc
VHB, Inc
Email Address
Phone Number
Email
John.Mastera@state.ma.us
William.Ullom@state.ma.us
Sara.Timoner@state.ma.us
Promise.Otaluka@dot.gov
BRawson@somervillema.gov
JPolito@police.somerville.ma.us
CBreen@somervillema.gov
BKearney@walkboston.org
pdunford@vhb.com
tmcintosh@vhb.com
ethompson@vhb.com
xxx-xxx-xxxx
857-368-9648
857-368-9622
781-641-8435
617-494-2528
617-625-6600
617-625-1600
617-623-1700
617-367-9255
617-607-6175
617-924-1770
617-924-1770
Page 31
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Appendix C. Detailed Crash Data
Page 32
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Page 34
Crash Data Summary Table
Crash Date
m/d/y
#
1
2
3
Crash Day
5/3/2008 Saturday
6/11/2008 Wednesday
2/1/2009 Sunday
Time of Day
Manner of Collision
Type
13:40:00 Rear‐end
15:23 Angled
21:35:00 Angled
Mystic Avenue at Grant St; Somerville MA
January 2008 ‐ December 2012
Weather Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Followed too closely
17
27 Daylight
Dark ‐ lighted roadway
Clear
Dry
56
97
Clear
Dry
Failed to yield right of way
Disregarded traffic signs, signals, road markings
31
30
20
42
43
29
D1 pulled off of grant St. and was hit by D2
D1 failed to obey a yield sign, struck D2
30
59
D2 stopped for traffic, struck by D1
D2 tried to pull out of Grant St. then was struck by D1
Sideswipe, opposite 13:43:00 direction
Daylight
Clear
Dry
5
4/15/2009 Wednesday
16:20:00 Angled
Daylight
Clear
Dry
11:50:00 Rear‐end
Daylight
unk
Dry
Inattention/ following too closely
5/29/2009 Friday
8:22:00 Angled
Veh #2 stopped for traffic, struck by Veh #1
Wet
3/28/2009 Saturday
7
Comments
D4
Rainy
4
5/2/2009 Saturday
Ages
D2
D3
Daylight
Operation vehicle in erratic, reckless, careless, negligent or aggressive manor
Disregarded traffic signs, signals, road markings
6
D1
Daylight
Cloudy
Dry
Failed to yield right of way
53
20
45
25
23:32:00 Angled
Dark ‐ lighted roadway
Clear
Dry
Operation vehicle in erratic, reckless, careless, negligent or aggressive manor
D2 struck D1
D2 tried to make illegal turn, struck D1
8
9/11/2009 Friday
9
11/10/2009 Tuesday
13:30:00 Rear‐end
Daylight
unk
Dry
Inattention
42
41
D1 going too fast on ramp, hit D2 D2 yielded to traffic, D1 struck D2
11/11/2009 Wednesday
15:15:00 Angled
Daylight
Clear
Dry
Obstructed view
50
28
D1 pulled off of grant St. and was hit by D2
10
11
11/18/2009 Wednesday
6:15:00 Single Vehicle Crash
Dark ‐ lighted roadway
Clear
Dry
No improper driving
61
Pedestrian attempted to cross street not in a crosswalk, while D1's light was green
Page 1 of 3
Crash Data Summary Table
#
12
Crash Date
m/d/y
Crash Day
2/12/2010 Friday
Time of Day
Manner of Collision
Type
21:14 Angled
Mystic Avenue at Grant St; Somerville MA
January 2008 ‐ December 2012
Weather Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Unknown
Unk
Unk
Failed to yield right of way
D1
Ages
D2
D3
29 Unk
D2 truck D1, Hit and Run
Unidentified vehicle struck V1 causing them to hit a wall
13
5/25/2010 Tuesday
17:45:00 Angled
Daylight
Clear
Dry
No improper driving
23
14
9/11/2010 Saturday
14:30:00 Angled
Daylight
Clear
Dry
Failed to yield right of way; inattention
44
19
15
11/8/2010 Monday
14:20:00 Rear‐end
Daylight
unk
Wet
Disregarded traffic signs, signals, road markings
22
47
11:55:00 Angled
Daylight
Clear
Dry
Made an improper turn
44
22
16
11/26/2010 Friday
17
1/26/2011 Wednesday
Sideswipe, same 12:40:00 direction
Daylight
unk
Dry
Failed to yield right of way,
44
51
18
1/29/2011 Saturday
13:03:00 Rear‐end
Daylight
Clear
Dry
Other improper action
53
26
19
3/28/2011 Monday
7:30:00 Rear‐end
Daylight
Clear
Dry
Followed too closely
30
43
20
5/11/2011 Wednesday
14:21:00 Unknown
Daylight
Cloudy
Dry
Unkown
20
21
6/10/2011 Friday
Dark ‐ lighted roadway
Cloudy
Dry
Wrong side/ wrong way
30
28
22
7/25/2011 Monday
17:40:00 Rear‐end
Daylight
unk
Wet
Inattention
19
64
23
7/27/2011 Wednesday
23:30:00 Rear‐end
Dark ‐ lighted roadway
unk
Dry
Inattention
20
31
24
8/3/2011 Wednesday
0:35:00 Rear‐end
Dark ‐ lighted roadway
Cloudy
Dry
Failed to yield right of way
51
32
2:12:00 Head on
Comments
D4
D1 failed to stop at yield sign and struck D2
D1 failed to yield at stop sign, struck D2 from behind
D1 tried to take U‐turn, but was struck on left by D2
D1 failed to yield to traffic while trying to make illegal turn, struck D2
D2 stopped in traffic, hit from behind by D1
D1 yielded for traffic, D2 didn't, struck D1 from behind
D1 struck by unknown truck
47
D1 drifted into on coming traffic, struck D2
D3 and D2 yielded to traffic, D1 struck D2 into D3
D1 distracted, didn't see D2 stopped, struck D2
D2 clipped D1 while attempting to change lanes
Page 2 of 3
Crash Data Summary Table
#
25
26
27
28
Crash Date
m/d/y
Crash Day
11/12/2011 Saturday
1/20/2012 Friday
3/7/2012 Wednesday
3/23/2012 Friday
Time of Day
Manner of Collision
Type
14:35:00 Rear‐end
Mystic Avenue at Grant St; Somerville MA
January 2008 ‐ December 2012
Weather Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Daylight
Clear
Dry
D1
Followed too closely
Ages
D2
D3
27
Comments
D4
D2 stopped for traffic, struck by D1
32
D1 yielded for traffic, D2 didn't, struck D1 from behind
D1 and D2 yielded for traffic, D3 did not, struck D2 into D1
14:20:00 Rear‐end
Daylight
Clear
Dry
Followed too closely
25
27
18:50:00 Rear‐end
Dark ‐ lighted roadway
Clear
Dry
Followed too closely
29
38
36
23:28:00 Rear‐end
Dark ‐ roadway not lighted
Clear
Dry
Failed to yield right of way
37
57
35
Dark ‐ lighted roadway
unk
Wet
Other improper action
unk
unk
D1 hit D2 into D3
D1 initially stopped in his driveway, rolled into V2
Daylight
Cloudy
Dry
Failed to yield right of way
unk
unk
D2 stopped for traffic, struck by D1
Clear
Dry
Other improper action
29
5/5/2012 Saturday
2:48:00 Rear‐end
30
5/5/2012 Saturday
11:45:00 Rear‐end
31 12/14/2012 Friday
9:35:00 Rear‐end
Daylight
One of 31 Hit and Run
Zero of 31 charged with OUI.
One out of 31 involved non‐motorist (pedestrian, cyclist)
One driver unlicensed, unregistered/uninsured vehicle, and/or expired Inspection Sticker
11 out of 31 collisions resulted in personal injury
20 of the 62 vehicles involved in 31 collisions were towed Summary based on Crash Reports obtained from MassDOT.
36
28
D2 stopped in traffic, hit from behind by D1
Page 3 of 3
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Page 35
Crash Data Summary Table
Crash Date
m/d/y
#
Crash Day
Time of Day
Manner of Collision
Type
Mystic Avenue at Wheatland St ; Somerville MA
January 2008 ‐ December 2012
Weather Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Dark ‐ lighted Disregarded traffic signs, roadway
Clear
Dry
signals, road markings
Disregarded traffic signs, Daylight
Clear
Dry
signals, road markings
D1
Ages
D2
D3
Comments
D4
24
37
D1 ran red light
33
44
45
51
D1 ran red light
D2 hit D1 pulling out of parking spot
59
34
D1 ran red light
34
None
1
2/21/2008 Thursday
23:58:00 Angled
2
3/20/2008 Thursday
12:08:00 Angled
3
4/13/2008 Sunday
13:05 Angled
Daylight
Cloudy
Wet
4
5/11/2008 Sunday
11:30:00 Angled
Daylight
Clear
Dry
Failed to yield right of way
Disregarded traffic signs, signals, road markings
15:55:00 Angled
Daylight
Rainy
Wet
Unknown
12:26:00 Angled
unk
Dry
Inattention
23
77
23:44:00 Rear‐end
Daylight
Dark ‐ lighted roadway
unk
Dry
40
38
13:29:00 Angled
Daylight
Rainy
Wet
Inattention
Disregarded traffic signs, signals, road markings
D2 pulled out and was struck by D1
D1 stopped at red light, D2 didn't stop 44
28
D2 ran red light
5
6/4/2008 Wednesday
6
2/19/2009 Thursday
7
9/8/2009 Tuesday
8
9
2/24/2010 Wednesday
10/25/2010 Monday
6:45:00 Angled
Dawn
Dark ‐ lighted roadway
10
8/25/2012 Saturday
1:30:00 Angled
Zero of 10 Hit and Run
At least 4 drivers out of 19 ran a red light
Zero of 10 charged with OUI.
One out of 10 involved non‐motorist (pedestrian, cyclist)
Zero drivers unlicensed, unregistered/uninsured vehicle, and/or expired Inspection Sticker
3 out of 10 collisions resulted in personal injury
Three of the 18 vehicles involved in 10 collisions were towed Summary based on Crash Reports obtained from MassDOT.
unk
Clear
Dry
No improper driving
29
Clear
Dry
Disregarded traffic signs, signals, road markings
39
D1 pulled off of Wheatland St., bicyclist hit D1
22
Both drivers claimed to have green lights
Page 1 of 1
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Page 36
Crash Data Summary Table
Crash Date
m/d/y
#
Crash Day
Time of Day
Manner of Collision
Type
Mystic Avenue at McGrath Hwy SB; Somerville MA
January 2008 ‐ December 2012
Weather Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
2
5/23/2009 Saturday
10:01:00 Angled
Daylight
Cloudy
Dry
3
8/10/2009 Monday
10:10:00 Angled
Daylight
Clear
Dry
Followed too closely
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
4
10/5/2009 Monday
16:20:00 Angled
Daylight
Clear
Dry
13:28:00 Single Vehicle Crash
Daylight
Rainy
21:20:00 Rear‐end
Dark ‐ lighted roadway
15:55:00 Angled
Dusk
21:35:00 Rear‐end
Dark ‐ lighted roadway
5/3/2008 Friday
1
5
10/28/2009 Wednesday
6
4/27/2010 Tuesday
7
12/22/2009 Tuesday
8
9
10
2/27/2010 Saturday
8/3/2010 Tuesday
8/25/2010 Wednesday
13:20:00 Rear‐end
Daylight
Rainy
Wet
D1
31
Ages
D2
D3
Comments
D4
Veh #2 stopped for traffic, struck by Veh #1
26
61
45
D1 ran red light
One of the vehicles ran the red light
Disregarded traffic signs, signals, road markings
25
39
D1 ran red light
Wet
No improper driving
33
Clear
Dry
54
32
Clear
Dry
Physical Impairment
Disregarded traffic signs, signals, road markings
21
26
Dry
Operating vehicle in erratic, reckless, careless, negligent or aggressive manor
29
17
Clear
unk
37
26
D1 turned right but lost control and hit guardrail
D1 stopped short causing each other car to hit the car in front of 22 itself
D1 ran red light
D2 slowed down in traffic, D1 took eyes off of road and struck D2
D2 stopped at red light, struck from behind by D1
16:50:00 Rear‐end
Daylight
Clear
Dry
Followed too closely
37
33
17:45:00 Rear‐end
Daylight
Clear
Dry
Followed too closely
34
26
14:05:00 Angled
Daylight
unk
Dry
Overcorrecting/ Over steering
62
34
Daylight
Cloudy
Wet
Unknown
32
27
D1 drifted in their lane making contact with D2
D1 slowed for light then struck by D2
Dawn
Rainy
Wet
Other improper action
76
30
D2 stopped for traffic, struck by D1
11
10/12/2010 Tuesday
12
10/15/2010 Friday
9:08 Rear‐end
13
11/5/2010 Friday
7:18:00 Rear‐end
Page 1 of 3
Crash Data Summary Table
#
14
15
16
Crash Date
m/d/y
Crash Day
12/3/2010 Friday
1/31/2011 Monday
5/16/2011 Monday
Time of Day
Manner of Collision
Type
14:41:00 Rear‐end
2:28:00 Rear‐end
16:18:00 Rear‐end
3/1/2012 Thursday
Snow
Disregarded traffic signs, signals, road markings
Wet
34
Followed too closely
23
33
52
D1 could not stop in time based on road conditions, struck D2
33
D2 stopped for emergency vehicle, D1 hit them from behind
55
23:25:00 Angled
Cloudy
Dry
Inattention
23
35
Sideswipe, same 14:50:00 direction
Daylight
Clear
Dry
Made an improper turn
29
20
6:55:00 Angled
Daylight
Cloudy
Wet
Other improper action
22
25
13:30:00 Rear‐end
Daylight
unk
Dry
Disregarded traffic signs, signals, road markings
45
22
53
D1 tried to stop for red light, skidded into intersection, struck D2
40
D1 ran red light, struck by D2
D2 tried to turn left in front of D1, struck D1
D1 ran red light, struck D2
22
4/23/2012 Monday
16:20:00 Angled
Daylight
Rainy
Wet
Other improper action
23
4/29/2012 Sunday
Sideswipe, opposite 18:00:00 direction
Daylight
Clear
Dry
Disregarded traffic signs, signals, road markings
24
5/16/2012 Wednesday
13:50:00 Angled
Daylight
Cloudy
Dry
18:00:00 Head on
Daylight
unk
Dry
25
10/3/2012 Wednesday
Zero of 25 Hit and Run
At least 7 drivers ran a red light
46
No improper driving
5/22/2011 Sunday
21
unk
Followed too closely
Traffic light facing wrong way confused D2, caused them to stop short, hit by D1
Dry
18
10/25/2011 Tuesday
Daylight
unk
Dry
Comments
D4
unk
15:14:00 Angled
20
Dark ‐ lighted roadway
unk
Ages
D2
D3
Daylight
Dark ‐ lighted roadway
5/22/2011 Sunday
6/6/2011 Monday
Daylight
D1
Due to swerving car D1 could not avoid hitting pedestrian crossing road
D1 ran red light, struck D2
D1 in middle lane attempted to turn left, hit D2
D1 turned left from middle lane, struck D2, D1 spun out, hit streetlight
D1 yielded for traffic, D2 didn't, struck D1 from behind
17
19
Mystic Avenue at McGrath Hwy SB; Somerville MA
January 2008 ‐ December 2012
Weather Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Inattention
Disregarded traffic signs, signals, road markings
65
unk
unk
unk
unk
46
Page 2 of 3
Crash Data Summary Table
Mystic Avenue at McGrath Hwy SB; Somerville MA
January 2008 ‐ December 2012
Weather Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Crash Date Crash Day
Time of Day Manner of Collision
m/d/y
Type
Zero charged with OUI.
One out of 25 involved non‐motorist (pedestrian, cyclist)
Three drivers unlicensed, unregistered/uninsured vehicle, and/or expired Inspection Sticker
Ten out of 25 collisions resulted in personal injury
18 of the vehicles involved in 25 collisions were towed Summary based on Crash Reports obtained from MassDOT.
#
D1
Ages
D2
D3
Comments
D4
Page 3 of 3
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Page 37
Crash Data Summary Table
Crash Date
m/d/y
#
1
Crash Day
7/20/2008 Sunday
Time of Day
Manner of Collision
Type
Sideswipe, opposite 16:30:00 direction
1:15:00 Single Vehicle Crash
Mystic Avenue at McGrath Hwy NB; Somerville MA
January 2008 ‐ December 2012
Weather Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Disregarded traffic signs, Daylight
Rainy
Wet
signals, road markings
Dark ‐ lighted roadway
Clear
Dry
Operation vehicle in erratic, reckless, careless, negligent or aggressive manor
2
10/20/2008 Monday
3
4/18/2009 Saturday
15:50:00 Rear‐end
Daylight
Cloudy
Dry
Other improper action
4
5/11/2009 Monday
17:23:00 Angled
Daylight
Dark ‐ lighted roadway
Dark ‐ lighted roadway
Daylight
Clear
Dry
Clear
Dry
Unknown
Disregarded traffic signs, signals, road markings
Clear
Cloudy
Dry
Dry
Unknown
Unknown
Operating vehicle in erratic, reckless, careless, negligent or aggressive manor
5
6
7
9/3/2009 Thursday
11/6/2009 Friday
1/5/2010 Tuesday
1:19:00 Angled
21:00:00 Angled
14:35:00 Angled
8
1/20/2010 Wednesday
9
1/30/2010 Saturday
8:37:00 Angled
10
4/16/2010 Friday
5:04:00 Rear‐end
11
7/31/2010 Saturday
12
13
10/24/2010 Sunday
9/1/2012 Saturday
15:20:00 Rear‐end
Daylight
Clear
Dry
Daylight
Dark ‐ lighted roadway
Clear
Dry
Rainy
Wet
10:45:00 Angled
Daylight
Clear
Dry
1:25:00 Rear‐end
16:40:00 Rear‐end
Dark ‐ lighted roadway
Daylight
14
9/28/2012 Friday
15:07:00 Rear‐end
Daylight
Zero of 14 Hit and Run
Zero of 14 charged with OUI.
Zero out of 14 involved non‐motorist (pedestrian, cyclist)
One driver unlicensed, unregistered/uninsured vehicle, and/or expired Inspection Sticker
3 out of 14 collisions resulted in personal injury
Eight of the vehicles involved in 14 collisions were towed Summary based on Crash Reports obtained from MassDOT.
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
D1
29
Ages
D2
D3
35
D2 failed to stop for red flashing light
26
D1 took a right turn too fast and crashed
Plate in road caused D1 to slow down, D2 struck D1
27
unk
Comments
D4
D1 on guardrail, D2 turned around
D1 may have ran a red light
25
43
39
21
24
37
30
51
30
45
29
D1 could not see red light due to sun, hit D2
29
38
D1 ran red light
72
34
D2 ran red light
unk
46
D3 hit D2 into D1
Clear
Clear
Dry
Dry
Followed too closely
Wrong side/ wrong way
38
29
26
33
D1 stopped for a broken traffic light, D2 could not stop in time, struck D1
D1 backed into D2
Rainy
Wet
Followed too closely
43
45
D1 stopped at red light, D2 hit D1 from behind
Page 1 of 1
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Page 38
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Page 39
Crash Data Summary Table
#
Crash Date
m/d/y
Crash Day
Time of Day
1
1/10/2008 Thursday
11:45:00
2
1/22/2008 Tuesday
11:28:00
3
1/26/2008 Saturday
13:49:00
4
4/6/2008 Sunday
23:00:00
5
4/19/2008 Saturday
6
7/20/2008 Sunday
Mystic Avenue Northbound at Fellsway Southbound ; Somerville MA
January 2008 ‐ December 2012
Weather Manner of Collision
Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Type
Disregarded traffic signs, Angled
Daylight
Clear
Dry
signals, road markings
Disregarded traffic signs, Angled
Daylight
Clear
Dry
signals, road markings
Disregarded traffic signs, Angled
Daylight
Clear
Dry
signals, road markings
Dark ‐ lighted Disregarded traffic signs, Angled
roadway
Clear
Wet
signals, road markings
17:45:00 Angled
Daylight
unk
D1
Ages
D2
D3
24
64
D2 ran red light
47
78
D1 ran red light
25
34
D1 ran red light
D2 ran red light; Hit and Run
30 unk
Dry
Disregarded traffic signs, signals, road markings
25
24
48
38
Traffic Light not working, D1 and D2 entered intersection and crashed
D1 traveled through intersection at unsafe time, struck by D2
27
D2 ran a red light
40
17:10:00 Angled
Daylight
Clear
Dry
Daylight
Dark ‐ lighted roadway
unk
Dry
Disregarded traffic signs, signals, road markings
Cloudy
Dry
Followed too closely
47
62
8/2/2008 Saturday
13:05:00 Angled
8
8/30/2008 Saturday
2:00:00 Angled
unk
D2 ran fast through yellow light
26
Disregarded traffic signs, signals, road markings/ Obstructed Visibility
7
Comments
D4
9
9/2/2008 Tuesday
14:52:00 Angled
Daylight
Clear
Dry
Disregarded traffic signs, signals, road markings
10
9/3/2008 Wednesday
11:20:00 Rear‐end
Daylight
Clear
Dry
Inattention
19
76
D1 and D2 claimed they both had green lights, Collided in intersection
D2 obeying yield sign, D1 not paying attention struck D2
11
9/5/2008 Friday
17:54:00 Angled
Daylight
Clear
Dry
Unknown
39
25
D1 struck D2
V2 and V3 were stopped, V1 hit V2 in back causing V2 to hit V3
D1 and D2 merging lanes, collided
12
9/10/2008 Wednesday
13
9/25/2008 Thursday
14
15
10/31/2008 Friday
11/2/2008 Sunday
6:20:00 Rear‐end
Sideswipe, same 16:30:00 direction
Daylight
Clear
Dry
Inattention
44
53
Clear
Dry
30
Clear
Dry
Other improper action
Disregarded traffic signs, signals, road markings
35
0:44:00 Angled
Daylight
Dark ‐ lighted roadway
20
25
Sideswipe, same 6:41:00 direction
Daylight
Clear
Dry
Inattention
65
31
40
D2 ran red light
V2 tried to make an improper left turn, struck by V1
Page 1 of 9
Crash Data Summary Table
#
Crash Date
m/d/y
Crash Day
Time of Day
Mystic Avenue Northbound at Fellsway Southbound ; Somerville MA
January 2008 ‐ December 2012
Weather Manner of Collision
Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Type
D1
Ages
D2
D3
Comments
D4
16
11/15/2008 Saturday
19:08:00 Rear‐end
Dark ‐ lighted roadway
Rainy
Wet
No improper driving
29
50
17
12/11/2008 Thursday
21:45:00 Angled
Dark ‐ lighted roadway
Rainy
Wet
Disregarded traffic signs, signals, road markings
33
35
18
12/20/2008 Saturday
0:08:00 Angled
Dark ‐ lighted roadway
Snow
Snow
No improper driving
26
23
car in front of D1 stopped inappropriately causing D2 to hit D1 and D3 to hit D2
D2 tried to take an illegal left from right lane, struck by D1
Traffic signal not working, D1 struck by D2 in intersection
19
12/21/2008 Sunday
21:20:00 Angled
Dark ‐ unknown roadway lighting Snow
Snow
Disregarded traffic signs, signals, road markings
40 unk
1/24/2009 Saturday
12:34:00 Rear‐end
Daylight
Dry
Followed too closely
64
29
D2 ran red light
D1 stopped for a red light, D2 didn't stop in time
1/27/2009 Tuesday
Sideswipe, same 11:00:00 direction
79
D2 tried to merge into right lane, due to road work, too late, Struck D1
D1 and D2 stopped at red light, D3 struck back of D2 which hit D1
20
21
22
1/30/2009 Friday
23
1/31/2009 Saturday
23:40:00 Rear‐end
3:12:00 Angled
Daylight
Clear
unk
Dry
Dark ‐ lighted roadway
Dark ‐ lighted roadway
Clear
Dry
Clear
Other improper action
28
45
31
42
Dry
Inattention
Disregarded traffic signs, signals, road markings
24
57
42
D2 ran red light
24
2/4/2009 Wednesday
11:45:00 Rear‐end
Daylight
Clear
Dry
Inattention
32 unk
25
4/6/2009 Monday
16:50:00 Rear‐end
Daylight
Rainy
Wet
Inattention
42
23
D2 struck D1
D2 stopped for traffic, struck by D1
D2 ran red light and struck D1
26
4/12/2009 Sunday
2:45:00 Angled
Dark ‐ lighted roadway
Clear
Dry
Disregarded traffic signs, signals, road markings
25
21
27
4/19/2009 Sunday
2:15:00 Angled
Dark ‐ lighted roadway
Rainy
Wet
Disregarded traffic signs, signals, road markings
33
29
28
5/16/2009 Saturday
Daylight
Clear
Dry
Disregarded traffic signs, signals, road markings
41
47
15:45:00 Angled
27
D1 ran red light, struck D2 then D3
Both drivers claimed to have green lights
Page 2 of 9
Crash Data Summary Table
#
Crash Date
m/d/y
Crash Day
Mystic Avenue Northbound at Fellsway Southbound ; Somerville MA
January 2008 ‐ December 2012
Weather Time of Day Manner of Collision
Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Type
Sideswipe, same 9:23:00 direction
Daylight
Rainy
Wet
Inattention
Disregarded traffic signs, 11:56:00 Angled
Daylight
Clear
Dry
signals, road markings
29
5/27/2009 Wednesday
30
7/26/2009 Sunday
31
8/26/2009 Wednesday
13:50:00 Rear‐end
Daylight
unk
Dry
32
9/15/2009 Tuesday
11:30:00 Rear‐end
Daylight
unk
Dry
33
9/19/2009 Saturday
15:30:00 Angled
Daylight
Clear
Dry
34
11/9/2009 Monday
11:11:00 Angled
Daylight
Clear
35
11/19/2009 Thursday
10:00:00 Rear‐end
Daylight
36
11/20/2009 Friday
11:54:00 Angled
37
11/25/2009 Wednesday
21:00:00 Angled
Daylight
Dark ‐ lighted roadway
38
11/27/2009 Friday
39
11/27/2009 Friday
23:31:00 Angled
40
12/12/2009 Saturday
11:45:00 Rear‐end
41
12/31/2009 Thursday
42
43
12/31/2009 Thursday
12/1/2010
Wednesday
D1
Ages
D2
D3
Comments
D4
D2 failed to see D1 while merging
32
60
33
44
Inattention
51
34
D1 ran the red light
D2 stopped for traffic, struck by D1
31
35
D1 stopped in traffic, hit from behind by D2
72
36
D1 ran red light
Dry
Inattention
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
51
84
D2 ran a red light
Clear
Dry
Inattention
43
30
Clear
Wet
Driving too fast for conditions
22
60
Rainy
Wet
Distracted
19
72
D1 ran red light
Rainy
Wet
61
61
D1 tried to change lanes causing him to hit D2
unk
Dry
25
20
D2 ran red light
Clear
Dry
27
56
17:50:00 Rear‐end
Daylight
Dark ‐ lighted roadway
unk
Snow
11:35:00 Angled
12:17
Angled
Daylight
Daylight
Cloudy
Cloudy
Dry
Dry
Sideswipe, same 4:47:00 direction
Dark ‐ lighted roadway
Dark ‐ lighted roadway
44
2/24/2010 Wednesday
13:45:00 Angled
Daylight
Sleet, Hail, Freezing Rain
Wet
45
2/24/2010 Wednesday
22:20:00 Angled
Dark ‐ lighted roadway
unk
unk
46
3/10/2010 Wednesday
17:05:00 Angled
Daylight
Clear
Dry
Failure to keep in proper lane
Disregarded traffic signs, signals, road markings
54
D2 stopped at red light, D1 struck D2 rear
D1 lost control on wet surface, causes D2 to stop, D3 hit D2 in rear
D2 stopped short for light, D1 struck D2
D2 failed to stop for traffic signal
Followed too closely
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Inattention
39
18
43
23
39
64
Disregarded traffic signs, signals, road markings
23
50
D2 ran red light
28
26
Both drivers claimed to have green lights
42
20
D2 ran red light
Unknown
Disregarded traffic signs, signals, road markings
51
D2 ran red light
D1 cited
Page 3 of 9
Crash Data Summary Table
#
Crash Date
m/d/y
Crash Day
5/7/2010 Friday
10:30:00 Angled
Daylight
Clear
Dry
5/8/2010 Saturday
19:00:00 Angled
Daylight
unk
Dry
8:12:00 Angled
Daylight
Clear
Dry
No improper driving
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
12:00:00 Angled
Daylight
Cloudy
Dry
Disregarded traffic signs, signals, road markings
10:32:00 Rear‐end
Daylight
Clear
Dry
Inattention
21:10:00 Angled
Dark ‐ lighted roadway
Dry
Disregarded traffic signs, signals, road markings, Inattention
21:10:00 Single Vehicle Crash
Dark ‐ lighted roadway
unk
Dry
Operating vehicle in erratic, reckless, careless, negligent or aggressive manor
unk
18:36:00 Angled
Daylight
Clear
Dry
Disregarded traffic signs, signals, road markings
64
Dark ‐ lighted roadway
unk
Dry
Disregarded traffic signs, signals, road markings
37
D1 struck two sign posts 34
55
D1 and D2 stopped at red light, D2 took foot off break hit D1
57
22
5/23/2010 Sunday
6/5/2010 Saturday
6/25/2010 Friday
7/8/2010 Thursday
54
7/9/2010 Friday
55
8/20/2010 Friday
56
8/27/2010 Friday
57
58
D1 stopped for red light, D2 hydroplaned into D1
Wet
49
53
Comments
D4
Rainy
48
52
Ages
D2
D3
Daylight
3/29/2010 Monday
51
D1
16:25:00 Rear‐end
47
50
Time of Day
Mystic Avenue Northbound at Fellsway Southbound ; Somerville MA
January 2008 ‐ December 2012
Weather Manner of Collision
Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Type
9/6/2010 Monday
10/8/2010 Friday
1:18:00 Single Vehicle Crash
13:25:00 Rear‐end
2:25:00 Angled
59
10/14/2010 Thursday
6:46:00 Rear‐end
60
10/24/2010 Sunday
1:19:00 Angled
Clear
Daylight
Clear
Dry
Dark ‐ lighted roadway
unk
Dry
Clear
Dry
Clear
Dry
Dusk
Dark ‐ lighted roadway
Followed too closely
Disregarded traffic signs, signals, road markings, inattention
Other improper action
Disregarded traffic signs, signals, road markings
20
28
52
51
31
29
D2 ran red light
53
47
D1 ran red light
20
32
unk
unk
28
49
31
D1 ran red light
both vehicles claimed to have green light
D1 struck D2 from behind while D2 was stopped at red light
D1 ran red light D1 was weaving in and out of traffic when he lost control
48
25 unk
25
30
one vehicle ran red light, most likely D1
D2 ran red light while distracted by passenger D1 lost control of their vehicle, crashed into oil truck
D1 ran red light
Page 4 of 9
Crash Data Summary Table
#
61
Crash Date
m/d/y
Crash Day
10/28/2010 Thursday
Time of Day
Mystic Avenue Northbound at Fellsway Southbound ; Somerville MA
January 2008 ‐ December 2012
Weather Manner of Collision
Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Type
9:15:00 Angled
Daylight
5:22:00 Rear‐end
Dark ‐ lighted roadway
Failed to yield right of way
24
Comments
D4
D1, siren on and lights flashing, tried to go through intersection, hit D2
35
Clear
Dry
16:30:00 Angled
Daylight
Dark ‐ lighted roadway
Dark ‐ lighted roadway
unk
Dry
Other improper action
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
16:10:00 Rear‐end
Dusk
Clear
Wet
Operating Defective Equipment
63
47
17:50:00 Angled
Dark ‐ lighted roadway
unk
Dry
Disregarded traffic signs, signals, road markings
25
67
D1 unable to stop, ran red light, struck D2
6:14:00 Angled
Dark ‐ lighted roadway
11/17/2010 Wednesday
63
11/21/2010 Sunday
14:03:00 Angled
64
11/27/2010 Saturday
18:05:00 Angled
65
11/30/2010 Tuesday
66
12/31/2010 Friday
1/9/2011 Sunday
Dry
Ages
D2
D3
D3 and D2 stopped at stoplight, D1 struck D2 into D3 from behind
D1 ran red light, struck D2
D1 ran red light, struck D2
D1 ran red light, struck D2
D1 stopped for traffic, struck from behind by D2
62
67
Clear
D1
68
1/13/2011 Thursday
69
1/19/2011 Wednesday
14:20:00 Angled
70
1/24/2011 Monday
22:48:00 Single Vehicle Crash
71
2/26/2011 Saturday
2:19:00 Angled
72
5/19/2011 Thursday
21:10:00 Angled
73
5/27/2011 Friday
74
75
Daylight
Dark ‐ lighted roadway
Rainy
Wet
Clear
Dry
Cloudy
Wet
Rainy
Wet
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Cloudy
Wet
No improper driving
Cloudy
Wet
Cloudy
Dry
14:00:00 Angled
Dark ‐ lighted roadway
Dark ‐ lighted roadway
Dark ‐ lighted roadway
unk
Dry
6/10/2011 Friday
21:38:00 Angled
Dark ‐ lighted roadway
unk
Dry
8/14/2011 Sunday
19:01:00 Angled
Dusk
unk
Dry
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
26
46
20
25
33
19
26
54
45
25
66
35
27
36
Snow hid most of traffic signal causing D1 and D2 to not know the signal
D1 ran red light, struck D2
Missing manhole cover
26
33
22
30
32
65
41
29
34
59
35
D2 ran red light, struck D1; Severe Crosswinds
D1 ran red light, striking D2 into D3
One of the vehicles ran the red light
D1 tries to turn into oncoming traffic, struck D2
D1 ran red light, struck by D2
Page 5 of 9
Crash Data Summary Table
#
Crash Date
m/d/y
Crash Day
Time of Day
76
9/2/2011 Friday
18:30:00
77
9/11/2011 Sunday
11:45:00
78
10/6/2011 Thursday
17:11:00
Mystic Avenue Northbound at Fellsway Southbound ; Somerville MA
January 2008 ‐ December 2012
Weather Manner of Collision
Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Type
Disregarded traffic signs, Angled
Daylight
Clear
Dry
signals, road markings
Disregarded traffic signs, Angled
Daylight
Clear
Dry
signals, road markings
Disregarded traffic signs, Angled
Daylight
Clear
Dry
signals, road markings
79
10/16/2011 Sunday
0:45:00 Angled
Dark ‐ roadway not lighted
Cloudy
Dry
80
10/30/2011 Sunday
6:50:00 Angled
Daylight
Clear
Dry
81
11/2/2011 Wednesday
11:47:00 Angled
Daylight
Clear
Dry
82
11/5/2011 Saturday
13:39:00 Angled
Daylight
Clear
Dry
Clear
Dry
83
12/5/2011 Monday
17:44:00 Angled
Dark ‐ lighted roadway
84
12/9/2011 Friday
11:10:00 Angled
Daylight
Clear
Dry
35
52
54
36
40
29
26
39
48
62
52
29
D1 ran red light, struck D2
D2 ran red light, struck D1
D2 ran red light, struck D1
D1 ran red light, struck D2 D2 ran red light, struck D1
D1 ran red light, struck D2
D2 ran red light, struck D1
37
51 unk
60
48
55
35
49
46
D1 ran red light, struck D2 then D3, D3 drove away from scene
D1 ran red light, struck by D2 and D3
24
Dry
56
35
Clear
Dry
Distracted
38
21
D1 stopped in traffic, D2 distracted hit D1
Dark ‐ lighted roadway
unk
Dry
13:20:00 Angled
Daylight
Clear
Dry
Clear
Dry
Clear
Dry
Clear
Dry
Unknown
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Daylight
Clear
Dry
86
1/3/2012 Tuesday
14:16:00 Angled
Cloudy
Dry
87
1/17/2012 Tuesday
18:25:00 Angled
Daylight
Dark ‐ lighted roadway
unk
88
1/28/2012 Saturday
12:15:00 Rear‐end
Daylight
89
1/29/2012 Sunday
2:00:00 Single Vehicle Crash
91
3/14/2012 Wednesday
13:17:00 Angled
92
3/16/2012 Friday
21:40:00 Angled
Daylight
Dark ‐ lighted roadway
18:02:00 Angled
Daylight
4/4/2012 Wednesday
19
21
12:32:00 Angled
93
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
20
Comments
D4
D1 ran red light, struck D2, D1 spun out, hit D3
D1 ran red light, struck by D2
D1 ran red light, struck D2
1/2/2012 Monday
3/6/2012 Tuesday
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Ages
D2
D3
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
85
90
D1
unk
33
48
54 unk
43
25
54
62
D1 lost control struck guardrail
D2 ran red light, struck D1
D1 ran red light, struck by D2
One of the vehicles ran a red light
D2 ran red light, struck D1
Page 6 of 9
Crash Data Summary Table
#
94
Crash Date
m/d/y
Crash Day
4/5/2012 Thursday
95
4/10/2012 Tuesday
96
4/23/2012 Monday
97
5/3/2012 Thursday
98
5/9/2012 Wednesday
99
5/24/2012 Thursday
100
6/2/2012 Saturday
101
6/2/2012 Saturday
102
6/25/2012 Monday
103
6/29/2012 Friday
Time of Day
Mystic Avenue Northbound at Fellsway Southbound ; Somerville MA
January 2008 ‐ December 2012
Weather Manner of Collision
Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Type
16:35:00 Angled
Daylight
unk
Dry
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
13:49:00 Head on
Daylight
Clear
Dry
Sideswipe, opposite 20:55:00 direction
Sideswipe, opposite 15:25:00 direction
Dark ‐ lighted roadway
Clear
Dry
Daylight
Clear
Daylight
9:51:00 Angled
1:11:00 Rear‐end
20:47:00 Angled
8:45:00 Rear‐end
Sideswipe, same 23:15:00 direction
2:13:00 Angled
104
7/1/2012 Sunday
11:25:00 Angled
105
7/5/2012 Thursday
106
Ages
D2
D3
D1 ran red light, struck D2
22
29
D1 made wrong turn onto one way, struck D2 into D3
26
65
Dry
unk
unk
Cloudy
Wet
Unknown
unk
unk
Clear
Dry
unk
unk
Rainy
Wet
Failed to yield right of way
Disregarded traffic signs, signals, road markings
unk
unk
Daylight
Cloudy
Wet
Other improper action
unk
unk
Dark ‐ lighted roadway
Rainy
Wet
Made an improper turn
Dark ‐ lighted roadway
Dark ‐ lighted roadway
Dark ‐ lighted roadway
Clear
Dry
Clear
Dry
21:05:00 Head on
unk
Dry
7/21/2012 Saturday
0:24:00 Angled
Dark ‐ lighted roadway
Clear
Dry
107
7/21/2012 Saturday
10:55:00 Angled
Daylight
Clear
Dry
108
7/30/2012 Monday
18:00:00 Angled
Daylight
Clear
Dry
7/31/2012 Tuesday
19:05:00 Angled
Daylight
Cloudy
Dry
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Comments
D4
48
31
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Daylight
Dark ‐ lighted roadway
109
D1
21
59
58
21
49
62
29
18
46
34
38
45
25
28
33
44
40
D1 ran red light, Struck the side of D2
D1 ran red light, struck D2
D1 and D2 made contact in intersection
D2 slowed down to merge with traffic, struck from behind by D1
D1 ran red light, struck D2
D1 stopped for red light, D2 slid into D1
D1 and D2 taking right, D2 struck D1 while turning
D2 ran red light, the 2 occupants of V2 fled the scene after crash
D1 ran red light, struck D2
D1 ran red light, struck D2
both vehicles claimed to have green light
D1 ran red light, struck D2
D1 ran red light, struck D2
D1 ran red light, struck D2
Page 7 of 9
Crash Data Summary Table
#
Crash Date
m/d/y
Crash Day
110
8/7/2012 Tuesday
111
8/8/2012 Wednesday
Mystic Avenue Northbound at Fellsway Southbound ; Somerville MA
January 2008 ‐ December 2012
Weather Time of Day Manner of Collision
Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Type
Disregarded traffic signs, 15:40:00 Angled
Daylight
Clear
Dry
signals, road markings
13:51:00 Rear‐end
Daylight
Clear
Dry
16:02:00 Angled
Daylight
Clear
Dry
9:35:00 Angled
Daylight
Rainy
Wet
Followed too closely
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
112
8/13/2012 Monday
113
8/15/2012 Wednesday
114
8/18/2012 Saturday
10:06:00 Angled
Daylight
Rainy
Wet
115
8/19/2012 Sunday
18:00:00 Angled
Clear
Dry
116
8/23/2012 Thursday
22:35:00 Angled
Daylight
Dark ‐ lighted roadway
Clear
117
8/27/2012 Monday
16:00:00 Head on
Daylight
34
47
Inattention
Disregarded traffic signs, signals, road markings
38
31
51
31
41
32
80
34
30
37
50
38
63
30
D1 ran red light, struck D2 which spun into D3
D1 ran red light, struck D2
37
D1 ran red light, struck D2. Unidentified third vehicle also struck D2
Dry
Daylight
Clear
Dry
Dawn
Dark ‐ lighted roadway
Clear
Dry
Followed too closely
Disregarded traffic signs, signals, road markings
Clear
Dry
Failed to yield right of way
unk
Dry
Rainy
Wet
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
Dry
Disregarded traffic signs, signals, road markings
12:55:00 Angled
124
10/30/2012 Tuesday
18:00:00 Angled
125
10/31/2012 Wednesday
13:00:00 Angled
Daylight
Dark ‐ lighted roadway
Daylight
51
49
Clear
10/25/2012 Thursday
72
Disregarded traffic signs, signals, road markings
Daylight
123
56
Dry
13:45:00 Angled
21:20:00 Angled
23
47
unk
9/6/2012 Thursday
10/8/2012 Monday
50
25
119
122
67
27
Dry
6:15:00 Angled
30
D1 ran red light, struck D2 and D3
D2 stopped in traffic, hit from behind by D1
D1 ran red light, struck D2 into D3
D1 ran red light, struck D2
D2 ran red light, struck by D1, D2 then hit a traffic light causing it to break
19
unk
9/23/2012 Sunday
28
53
Dry
Daylight
121
55
73
15:45:00 Rear‐end
14:20:00 Rear‐end
53
Comments
D4
40
9/6/2012 Thursday
9/10/2012 Monday
Ages
D2
D3
Disregarded traffic signs, signals, road markings
Disregarded traffic signs, signals, road markings
118
120
D1
Cloudy
46
Believed that D2 ran red light, striking D1
D1 ran red light, struck D3 into D2
D1 ran red light, struck D2, then D3 struck D2
D1 behind D2 in slow moving traffic, D1 rolled into D2
D1 ran red light, struck D2 D1 stopped in traffic, D2 struck D1 from behind
D1 ran red light, struck D2
D1 ran red light, struck D2
56
Page 8 of 9
Crash Data Summary Table
#
126
Crash Date
m/d/y
Crash Day
12/8/2012 Saturday
Time of Day
Mystic Avenue Northbound at Fellsway Southbound ; Somerville MA
January 2008 ‐ December 2012
Weather Manner of Collision
Light Condition Condition Road Surface Driver Contributing Code
Type
Type
Type
Type
Type
17:30:00 Angled
Dark ‐ lighted roadway
Clear
Dry
11:40:00 Rear‐end
Daylight
Clear
Dry
127 12/12/2012 Wednesday
Two of 127 Hit and Run
Two of 127 charged with OUI.
75 out of 127 were a result of red‐light running
Zero involved non‐motorist (pedestrian, cyclist)
8 drivers out of 268 cited for unlicensed, unregistered/uninsured vehicle, and/or expired Inspection Sticker
60 out of 127 collisions resulted in personal injury, including one fatality (motorcycle passenger)
124 of the 268 vehicles involved in collisions were towed Summary based on Crash Reports obtained from MassDOT.
D1
Ages
D2
D3
Comments
D4
Disregarded traffic signs, signals, road markings
20
57
both drivers claimed to have green lights
Inattention
37
33
D2 slowed for traffic, D1 failed to stop and hit D2
Page 9 of 9
Road Safety Audit— Fellsway/Mystic Avenue/McGrath Highway
Prepared by VHB, Inc.
Appendix D. Additional Information
•
MBTA Bus Route 95 Map and Schedule
•
2015 Automatic Traffic Recorders
•
2015 Turning Movement Counts
Page 33
Appendix E. Road Safety Audit References
Road Safety Audit References
Massachusetts Traffic Safety Toolbox, Massachusetts Highway Department,
www.mhd.state.ma.us/safetytoolbox.
Road Safety Audits, A Synthesis of Highway Practice. NCHRP Synthesis 336. Transportation Research
Board, National Cooperative Highway Research Program, 2004.
Road Safety Audits. Institute of Transportation Engineers and U.S. Department of Transportation, Federal
Highway Administration, www.roadwaysafetyaudits.org.
FHWA Road Safety Audit Guidelines. U.S. Department of Transportation, Federal Highway
Administration, 2006.
Road Safety Audit, 2nd edition. Austroads, 2000.
Road Safety Audits. ITE Technical Council Committee 4S-7. Institute of Transportation Engineers,
February 1995.