ROAD SAFETY AUDIT
Route 138 (Turnpike Street) at Randolph Street
Town of Canton
September 2014
Prepared For:
On Behalf Of:
Westwood Marketplace Holdings LLC
Prepared By:
35 New England Business Center Drive
Suite 140
Andover, MA 01810-1066
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Table of Contents
Background ................................................................................................................................. 1
Project Data ................................................................................................................................. 1
Project Location and Description ..............................................................................................2
Audit Observations & Potential Safety Enhancements............................................................ 5
Summary of Road Safety Audit................................................................................................. 12
List of Appendices
Appendix A.
Appendix B.
Appendix C.
RSA Meeting Agenda
RSA Audit Team Contact List
Detailed Crash Data
List of Figures
Figure 1.
Figure 2.
Locus Map .............................................................................................................................. 3
Route 138 at Randolph Street Existing Conditions................................................................ 4
List of Tables
Table 1.
Table 2.
Participating Audit Team Members ....................................................................................... 1
Potential Safety Enhancements Summary .............................................................................. 13
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Background
The intersection of Route 138 (Turnpike Street) at Randolph Street was identified as a high crash location
in the Metropolitan Area Planning Council (MAPC) based on the 2011 Highway Safety Improvement
Program (HSIP) cluster data. Improvements at this intersection, to be constructed as part of the off-site
mitigation related to the University Station mixed-use transit-oriented development to be located off of
University Avenue in Westwood, are currently under review by the MassDOT Highway Division at the
25% Design Level. The MassDOT Highway Division Traffic and Safety Engineering 25% Design
Submission Guidelines require a Road Safety Audit (RSA) be performed for all project-related high crash
locations to identify safety issues and enhancements that may be implemented in conjunction with the
University Station off-site mitigation project, as well as other measures that could be programmed for
implementation by others in the mid-term or long-term timeframes.
Project Data
The RSA for the subject location was conducted on September 5, 2014 at the Canton Town Hall. The RSA
Meeting Agenda is provided in Appendix A. Participating audit team members and their affiliation are
listed in Table 1; team member contact information is provided in Appendix B. For this modified RSA,
team members were encouraged to visit the location prior to the meeting to observe operations and
evaluate potential safety issues, using MassDOT’s Safety Review Prompt list for guidance. At the
meeting, team members were provided with an aerial photograph of the location, and a collision diagram,
summary table, and various bar charts analyzing motor vehicle crashes reported within the three year
review period (2010-2012). This material was reviewed by the team at the meeting in conjunction with
street level views afforded by Google Earth.
Table 1. Participating Audit Team Members
Audit Team Member
Agency/Affiliation
Ken Berkowitz
Charles Doody
James Donovan
Lisa Grega
Lisa Schletzbaum
Corey O’Connor
Amitai Lipton
Vivek Trivedi
Erin Kinahan
Stephen Boudreau
Scott Thornton
Jonathan Rockwell
Canton Police Department
Canton Fire Department
Canton Town Engineer
Canton Department of Public Works
MassDOT Highway Division Safety Section
MassDOT Highway Division Safety Section
MassDOT Highway Division District 6 Traffic
MassDOT Highway Division District 6 Permits
MassDOT Highway Division District 6 Planning
Vanasse & Associates, Inc.
Vanasse & Associates, Inc.
Vanasse & Associates, Inc.
Page 1
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Motor vehicle crash data was provided by the Canton Police Department for the most recent three year
review period available (2010-2012). The data provided includes 36 reported crashes, with nine (25%)
resulting in personal injury, and no reported fatalities. Eighteen (50%) of the crashes were rear-end crashes,
seven (19%) were turning movement crashes, five (14%) were angle crashes, four (11%) were sideswipe
crashes, one was a head-on crash, and one vehicle struck a fixed object. Nine (25%) of the crashes occurred
on wet pavement, one on icy pavement, and one in snowy conditions. Sixteen (44%) of the crashes
occurred during peak afternoon commuting hours (2 pm to 6 pm), and only three (8%) occurred during the
peak morning commute (6 am to 10 am). Several instances of secondary crashes were also noted in the
data, with one instance of four crashes within 39 minutes of each other.
Project Location and Description
Route 138 (Turnpike Street) is typically a two-lane urban principal arterial under MassDOT Highway
Division jurisdiction. Approximately 500 feet in advance of its intersection with Randolph Street, Route
138 (Turnpike Street) widens to provide two travel lanes per direction. Randolph Street is a two lane urban
minor arterial under the jurisdiction of the Town of Canton. The posted speed limit on Route 138
(Turnpike Street) at its intersection with Randolph Street is 40 miles per hour (mph) northbound and
40 mph southbound; Randolph Street is posted at 25 mph approaching the intersection. The posted limits
are consistent with Special Speed Regulation (SSR) Nos. 28C and 755.
Randolph Street intersects Route 138 (Turnpike Street) from the east and west to form a four-way
intersection under fully-actuated traffic signal control. Each Route 138 (Turnpike Street) approach consists
of two general purpose travel lanes. The Randolph Street eastbound approach consists of a shared leftturn/through lane and an exclusive right-turn lane; the westbound approach consists of an exclusive leftturn lane and a shared through/right-turn lane. The existing traffic signal phasing provides southbound and
westbound leading protected-permissive phases with five-section doghouse style signal heads laterally
positioned consistent with the 2009 Manual on Uniform Traffic Control Devices for Streets and Highways
(MUTCD) guidelines. Bicycle detection and a pushbutton-actuated exclusive pedestrian phase are also
provided. A sidewalk currently exists along the west side of Route 138 (Turnpike Street) and along the
south side of Randolph Street, west of the intersection, with curb ramps and crosswalks provided across
the north and west legs of the intersection.
A locus map and aerial photograph of the existing conditions are provided as Figure 1 and 2, respectively.
Page 2
Road Safety Audit - Route 138 (Turnpike Street) at Randolph Street - Canton, Massachusetts
Source: Google Earth.
0
1050
2100 Scale in Feet
Road Safety Audit - Route 138 (Turnpike Street) at Randolph Street - Canton, Massachusetts
TURN
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Source: Google Earth.
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Scale in Feet
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Audit Observations & Potential Safety Enhancements
Observations:
Congestion
Randolph Street eastbound frequently backs up, caused by left-turning vehicles blocking through
vehicles in the shared left-turn/through lane. As a result, some through vehicles use the right-turn lane
to travel straight through the intersection. However, because of past enforcement of lane use, drivers
traveling through the intersection will pass a left-turning vehicle on the right once in the middle of the
intersection. Both conditions are unexpected to Randolph Street westbound drivers and could be a
factor in the three turning movement crashes reported between westbound left turning vehicles and
eastbound through vehicles.
Because of the long queues at the intersection, some drivers have also been observed to use Farm
Street, a residential street between Randolph Street, east of the intersection, and Route 138, north
of the intersection, as a bypass to avoid congestion at the intersection. RSA members also noted
drivers bypassing the Randolph Street eastbound queue via Blackman Road and Meetinghouse
Road to Route 138 southbound, and some avoiding the area altogether because of the congestion.
Randolph Street westbound traffic queues beyond the entrance to the left-turn lane during peak
operations, caused by heavy traffic volume. As a result, vehicles cross the double-yellow centerline to
access the short left-turn bay, which is of particular concern because of a school bus stop adjacent to the
centerline crossover. This may be the cause of reported sideswipe crashes.
Angle crashes related to the congestion may result from permissive movements and drivers accepting
gaps that are too small. Congestion can also contribute to the incidence rear-end crashes, possibly due to
distracted driving or unexpected stopped traffic.
Geometry
Sight distance approaching the intersection on
Route 138 southbound is limited by a crest curve
which may limit the ability of a driver on
Route 138 southbound to see a stopped vehicle
over the crest of the curve. The intersection is
essentially in a trough, with downgrades of up to
6% approaching the intersection on Route 138 and
an upgrade of approximately 10% on the Randolph
Street eastbound approach. The grade, combined
with the crest curve noted above, may contribute to
the high number of rear-end crashed reported.
Page 5
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Signal Equipment & Operation
Drivers were observed to advance beyond the STOP line on all approaches while waiting for a gap
in opposing traffic during the permissive left turn phase. This could cause rear ends when a
through vehicle does not expect a left turning vehicle to stop and wait for a gap. It may also create
sideswipe crashes if a through vehicle in the left lane makes an unsafe lane change to bypass a left
turning vehicle. This particularly impacts operations on the northbound, southbound, and
eastbound approaches, frequently blocking the left lane, which is a shared left turn/through lane.
Two opposing vehicles waiting to turn left may also block the view of oncoming through traffic,
especially if one of the turning vehicles is a large vehicle; this contributes to angle crashes. 25% of
reported crashes were related to permissive left turns.
It was noted that visibility of signal heads is
compromised by the vertical geometry on the
northbound, southbound, and eastbound
approaches, and by queuing of large vehicles.
These signal head visibility issues could
contribute to the red light running observed and
also be related to rear end and angle crashes.
Also, post-mounted signal heads on the far-right
side northbound are sometimes not visible; these
are temporary replacements, as the mast arm
was knocked down in August 2013. This
temporary setup violates the MUTCD, which
requires that, if both primary signal heads are
post-mounted, one be located on the left of the
approach lanes. Because post-mounted signals
are less visible than overhead signals, an
increase in rear end crashes and red light
running may have resulted from this temporary
condition. The fact that there is no far-left signal
exacerbates the situation.
It was noted that the existing emergency vehicle preemption receivers (Opticom) on Route 138 do
not detect approaching emergency vehicles far enough in advance. The cause was attributed to the
limited line of sight (associated with the roadway profile) on approach to the intersection. One
reported crash was directly related to the presence of emergency vehicles, but this is more of a
general safety issue, contributing to longer emergency vehicle response time.
Page 6
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Signage
A lack of regional wayfinding signage may contribute to additional traffic volume at this location, with
drivers diverting from I-95, I-93 and Route 24 when incidents occur on those roadways. This was also
suggested to cause some driver confusion and delay at the intersection. An RSA team member noted
frequent U-turns south of the intersection, which may be due to drivers on Route 138 southbound
missing the turn to Randolph Street. A Massasoit Community College guide sign is located too close to
the intersection on Route 138 southbound, which may not allow sufficient time to change lanes to turn
onto Randolph Street eastbound.
There are limited guide signs in advance of the intersection. However, MassDOT noted that it is not
their standard policy to install advance guide signs on local roadways that are not numbered routes.
Collectively, a lack of guide signage can contribute to rear end and side swipe crashes, as drivers are not
confident in their actions.
Truck Accommodation
It was noted that large trucks have difficulty turning left from Route 138 northbound to Randolph Street
westbound due to vehicles stopping beyond the STOP line. Further analysis subsequent to the
meeting using AutoTurn software indicates that this condition exists in both the northbound and
southbound directions and is exacerbated by the location of the STOP line and receiving width.
Pedestrian Accommodation
Sidewalks currently exist along the west side of Route 138 and along the south side of Randolph
Street, west of the intersection There are also curb ramps and an exclusive pedestrian phase at the
intersection, with crosswalks across the north and west legs. During the audit a pedestrian was observed
crossing with the vehicle signal phase along both crosswalks instead of activating the pedestrian signals.
Bicycle Accommodation
Shoulder widths of approximately three-feet on each approach afford limited bicycle accommodation.
A bicycle was observed traveling southbound, south of the intersection, at a point when two vehicles
were attempting to merge and were very close to the cyclist.
Visibility
Visibility on the northwest corner appears to be
impacted by the placement of the traffic signal
control cabinet.
Page 7
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Shrubs on the southeast corner (within the State
Highway Layout) obscure visibility to/from
vehicles exiting the Canton Veterinary Hospital
driveways on Route 138 and Randolph Street
and westbound drivers making a right turn on
red. Vehicles turning right from Route 138
northbound pose a threat to vehicles exiting the
Veterinary driveway on Randolph Street. This
is exacerbated by the large radius of the
southeast corner, allowing northbound right
turning vehicles to turn at high speeds.
Although no crashes were reported in this
manner, is still poses a potential safety concern.
Low-hanging tree branches and brush obscure the
existing signal-activated “Red Signal Ahead”
sign on Route 138 southbound, north of the
intersection. It is important that this sign is
visible given the vertical crest on the Route 138
southbound approach obstructs the view of the
intersection. This may be a contributing factor
in some of the southbound rear end crashes
reported.
Speeding
It was noted that speeding is prevalent on Route 138, particularly southbound. The speed limit
drops from 45 mph to 40 mph approximately 900 feet in advance of the intersection southbound
and 1,400 feet in advance of the intersection northbound. However, it was also noted that police
enforcement may be hindered due to the limited shoulder width, which is somewhat inadequate to
monitor traffic or safely pull over a vehicle. It was also observed that some vehicles make right
turns at a high speed, a result of the large corner radii, particularly on the Route 138 approaches.
Pavement Condition
It was speculated that the relatively high percentage of crashes occurring in wet/snow/ice conditions
may be indicative of old pavement that is in poor condition. However, the pavement appears to be in
generally good condition, which may reinforce the previously cited approach grades and speeding as
safety issues.
Downstream Merge
It was noted that the length of the two lane section downstream of the intersection on Route 138
northbound and southbound, prior to the lanes merging, is too short. This could lead to sideswipe
crashes as drivers jockey for merging position departing the intersection, though no reported crashes
were directly attributable to this condition.
Page 8
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Abutter Access
There were two turning movement crashes reported between drivers exiting the Canton Veterinary
Hospital driveway on Route 138 and northbound through vehicles. These may be due to the left turning
vehicle attempting to cross two lanes of traffic; if a vehicle in the near northbound through lane stops to
allow the turning vehicle to proceed, a driver in the far northbound through lane may not see the turning
vehicle.
Potential Enhancements:
1. Consider modifying the Randolph Street eastbound approach to provide an exclusive left-turn lane;
widening on the northwest and/or southeast corners would be required to maintain lane alignment
for through traffic across the intersection. This would prevent the eastbound through movement
from being blocked by left turning vehicles. It would also allow westbound left turning vehicles to
clearly observe eastbound through vehicles, reducing the likelihood of an angle crash.
2. Review Randolph Street signal phasing, considering eastbound lead or lag, or eastbound lead with
westbound lag. This could partially alleviate queues in the eastbound left lane and could reduce
turning movement crashes by providing a protected eastbound phase.
3. Review Route 138 northbound phasing, considering protected or protected-permissive left-turns, lag
instead of lead, or flashing yellow arrows to allow vehicles to clear the intersection and minimize
blocking of through vehicles in the northbound direction. This could reduce angle, turning
movement and rear end crashes by introducing a protected phase for northbound left turns.
4. Widen Randolph Street westbound to extend the left-turn lane beyond the through queue to reduce
vehicles driving over the double yellow centerline and reduce the opportunity for sideswipe crashes.
5. Provide exclusive left-turn lanes on Route 138 to separate turning from through traffic. This would
allow protected left turn phasing, eliminating a significant number of turning conflicts and
opportunity for turning movement/angle crashes currently associated with permissive phasing. It
would also likely reduce the incidence of rear end crashes as through vehicles would not be blocked
by left turning vehicles. Careful review of analysis would be needed to ensure that all volumes from
cut through and queued traffic at the end of the count period is included to ensure that the Route 138
southbound capacity is adequate. Evaluate and provide an exclusive left turn lane and two through
lanes on Route 138 southbound, if supported by this analysis.
6. Given the number of angle crashes and the high speeds observed on the Route 138 approaches
to the intersection, evaluate installation of a roundabout (typically performed in conjunction
with a Functional Design Report) and install roundabout if supported by evaluation results.
Roundabouts have been proven to reduce angle crashes and to calm traffic, which reduces the
severity of crashes.
Page 9
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
7. Reduce grades on the Route 138 approaches, either by lowering the roadway profile on
approaching crest curves or raising the intersection. This would improve visibility to queued
vehicles at the intersection and to the signals themselves, decrease braking distance, and may
reduce rear end crashes.
8. Install a “Red Signal Ahead” sign on Route 138 northbound, south of the intersection, to
provide advance notification to drivers of potential queued vehicles and reduce rear end
crashes.
9. Install fluorescent yellow retroreflective borders on all signal head backplates to improve visibility.
10. Install a mast arm for the northbound approach to replace the one knocked-down in 2013 and
improve visibility of signal heads.
11. Add supplemental signal heads on all approaches, mounted either on posts or the mast-arm
shaft; consider far side left if warranted by selected phasing. This would improve visibility of
indications when traveling near large vehicles or during times of solar glare.
12. Review change/clearance intervals, accounting for approach grades. This will ensure that
vehicles are afforded sufficient time to clear the intersection and should reduce red-light
running and incidents of vehicles beyond the STOP line during the next phase, thereby
reducing angle and turning movement crashes.
13. Increase enforcement, including speeding, red-light running and vehicles stopped beyond the STOP
line.
14. Install and/or relocate pavement markings to improve recognition of desired stopping point
(crosswalk location, crosswalk striping with greater emphasis, location of STOP lines, wider
STOP lines), thereby reducing angle and turning movement crashes.
15. Install “Stop Here on Red” signs on all approaches to reinforce the desired stopping point and
reduce occurrences of vehicles stopping beyond the stop line, thereby reducing angle and
turning movement crashes.
16. Adjust placement of existing emergency preemption receivers. Adjusting the angle of the
existing receivers could improve advance detection by accounting for the approach grades and
reducing possible obstruction by queued vehicles.
17. Install advance emergency preemption receiver or receiver on riser pole on mast arm for
emergency preemption on approaches with limited line of sight.
18. Review wayfinding/confirmatory route signs to aid drivers in the event of regional roadway
diversions. Specifically, install guide signs at the intersection of Route 138 at Washington
Street to divert traffic destined for downtown Canton. This would reduce right turning volume
on Route 138 southbound, somewhat easing congestion and queuing.
Page 10
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
19. Install advance street name signs (“Randolph Street – Next Signal”) on both Route 138
approaches to aid drivers in selecting the correct lane in advance of the intersection.
20. Relocate Massasoit Community College guide sign on Route 138 southbound to provide
advance notification and allow drivers to change lanes prior to the intersection.
21. Widen along the northern edge of Randolph Street, west of Route 138, to provide a wider
receiver lane for turning trucks.
22. Review STOP line location on the Randolph Street approaches with respect to truck-turning
maneuvers and relocate if warranted.
23. Install sidewalk along the east side of Route 138 for pedestrian accommodation.
24. Review exclusive versus concurrent pedestrian phasing and implement selected option based on
review.
25. Provide 5-foot wide shoulders for bicycle accommodation.
26. Relocate traffic signal control cabinet to improve sight line for southbound right-turns.
27. Trim, remove or replace with a low-growing variety, the shrubs on the southeast corner to
improve visibility of vehicles exiting the Canton Veterinary Hospital driveways on Route 138
and Randolph Street.
28. Trim vegetation obscuring the “Red Signal Ahead” sign on Route 138 southbound.
29. Widen Route 138 to provide shoulder width adequate to accommodate a stopped vehicle to facilitate
enforcement efforts.
30. Consider channelization of right-turn movements to reduce length of signalized pedestrian
crossings and associated crossing time, allowing additional time for high demand vehicle
movements.
31. Decrease radii at all corners to reduce turning speed, while still accommodating all vehicles.
32. Repave entire intersection to improve skid resistance and reduce likelihood of rear end crashes.
33. Install high-friction surface treatment on intersection approaches to reduce frequency of crashes
during wet/snow/ice conditions.
34. Widen Route 138 northbound and southbound to increase two-lane departure length prior to the
merge. This would allow vehicles departing the intersection to return to free flow speed prior to
merging, separate the merge from the intersection operations, and reduce the opportunity for
sideswipe crashes.
35. Install signs to prohibit left turns at the Canton Veterinary Hospital driveways to reduce the
opportunity for turning movement crashes.
Page 11
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Summary of Road Safety Audit
Potential safety enhancements that were discussed during the RSA meeting and described in the previous
section are summarized in Table 2. For each potential enhancement, an estimate of the safety benefit
(“payoff”), approximate timeframe to implement, and cost are noted; the responsible party recommended
to implement the enhancement is also identified.
Safety payoff estimates are qualitative and categorized as low (<30%), medium (31% to 70%), or high
(>71%). The time frame to implement each enhancement is categorized as short-term (<1 year), mid-term
(1 to 3 years), or long- term (>3 years). The cost estimates are categorized as low (<$10,000), medium
($10,001 to $50,000), or high (>$50,001).
Enhancements where the developer is identified as the responsible agency and marked with an asterisk
have already been incorporated into the 25% Design Plans for improvements at this intersection, to be
constructed as part of the off-site mitigation related to the University Station mixed-use transit-oriented
development to be located off of University Avenue in Westwood, which are currently under review by
the MassDOT Highway Division.
Page 12
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Table 2. Potential Safety Enhancement Summary
Safety Issue
Congestion; queuing
Congestion; queuing
Congestion; queuing
Congestion; queuing
Congestion; queuing
Congestion; queuing
Geometry
Geometry
Visibility of signal heads
Visibility of signal heads
Visibility of signal heads
Potential Safety Enhancement
1. Provide exclusive LTL EB
2. Modify Randolph St signal
phasing
3. Modify Rte 138 NB signal
phasing
4. Extend Randolph St WB LTL
5. Widen to provide exclusive LTL
on Rte 138 NB & SB
Safety Payoff
Medium
Time Frame
Long-term
Responsible Agency
MassDOT/Town
Short-term
Cost
High
Medium
High
High
Short-term
Medium
Developer*
Low
Mid-term
High
High
Long-term
High
Town
MassDOT
6. Install roundabout
7. Reduce grades on Rte 138
8. Install “Red Signal !head” sign
on Rte 138 NB
9. Install retroreflective borders
on signal head backplates
Medium
Low
Medium
Long-term
Long-term
Short-term
High
High
Medium
MassDOT
MassDOT
Developer
Low
Short-term
Low
Developer*
10. Install mast arm for NB
approach
11. Install supplemental signal
heads
12. Review/adjust
change/clearance intervals
Medium
Short-term
Medium
Developer*
Low
Short-term
Low
Developer
Low
Short-term
Low
Developer*
High**
Short-term
**
Canton Police Dept
Low
Short-term
Low
Developer
Red-light running; vehicles
stopped beyond stop line
Speeding, red-light running, 13. Increase enforcement
vehicles stopped beyond
(**Depends on level of
enforcement)
stop line
Vehicles stopped beyond
14. Modify stop lines & crosswalks
stop line
Developer*
Page 13
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Table 2. Potential Safety Enhancement Summary (continued)
Safety Issue
Vehicles stopped beyond
stop line
Signal operation
Signal operation
Safety Payoff
Time Frame
Cost
Responsible Agency
15. Install “Stop Here on Red”
signs
Low
Short-term
Low
Developer
16. Adjust preemption
receivers
Low
Short-term
Low
Developer
Low
Short-term
Medium
Developer
Potential Safety Enhancement
17. Install advance preemption
receivers or receivers on
risers at intersection
Congestion
18. Wayfinding signage
Low
Mid-term
Medium
Town
Congestion
19. Advance street name signs
Low
Short-term
Low
Developer
Congestion
20. Relocate Massasoit Comm.
College sign
21. Widen Randolph St, west of
Rte 138 for truck
accommodation
22. Set back stop lines on
Randolph St
23. Install sidewalk on east side
of Rte 138
24. Review/implement
pedestrian phasing
Low
Short-term
Low
Developer
Low
Mid-term
Medium
MassDOT
Low
Short-term
Low
Developer*
Low
Long-term
High
MassDOT
Low
Short-term
Low
Developer
Low
Short-term
Low
Developer
Truck accommodation
Truck accommodation
Pedestrian accommodation
Pedestrian accommodation
Bicycle accommodation
25. Provide 5-foot shoulders
Visibility
26. Relocate signal cabinet
Low
Mid-term
Medium
MassDOT
Visibility
27. Trim, remove or replace
shrubs on SE corner
Low
Short-term
Low
Developer
Page 14
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Table 2. Potential Safety Enhancement Summary (continued)
Safety Issue
Visibility
Speeding, red-light running,
vehicles stopped beyond
stop line
Congestion; queuing
Speeding
Potential Safety Enhancement
28. Trim vegetation at “Red
Signal !head” sign on Rte
138 SB
29. Widen Rte 138 to provide
shoulders adequate for
stopped vehicle to allow
increased enforcement
(**Depends on level of
enforcement)
30. Channelize right-turns
31. Decrease corner radii
Safety Payoff
Time Frame
Cost
Responsible Agency
Low
Short-term
Low
Developer
High**
Long-term
High
MassDOT
Low
Long-term
High
MassDOT
Low
Mid-term
Medium
MassDOT
Medium
Short-term
Medium
Developer*
Pavement condition
32. Repave intersection
Pavement condition
33. Install high-friction surface
Low
Mid-term
Medium
MassDOT
Downstream merge
34. Widen Rte 138 to increase
two-lane departure length
Medium
Long-term
High
MassDOT
Abutter access
35. Install signs to prohibit LT at
Canton Veterinary Hospital
Low
Short-term
Low
MassDOT
Page 15
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Appendix A. RSA Meeting Agenda
Modified Road Safety Audit
Randolph Street/Route 138, Canton
LOCATION: Canton Town Hall
DATE: Friday September 5, 2014
TIME: 9am – 12pm
Type of meeting:
High Crash Location – Road Safety Audit
Attendees:
Invited Participants to Comprise a Multidisciplinary Team
Items for Discussion
1. Overview – Discussion of intersection
2. Review of Site Specific Material



Existing Conditions
Safety Review Prompt List
Crash Summaries and Diagrams
3. Comments from Reviewers
4. Additional Items?
NOTES:
G:\6629 Westwood, MA\RSA agenda ‐ Canton.docx 1 Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Appendix B. RSA Audit Team Contact List
RSA AUDIT TEAM CONTACT LIST
Project:
Route 138 at Randolph Street - Canton
Meeting Date:
9/5/14
Facilitator:
VAI
Place/Room:
Canton Selectmen’s Meeting Room
Name
Title
Company
Phone
E-Mail
Scott Thornton
Engineer
VAI
978-474-8800
sthornton@rdva.com
Jonathan Rockwell
Engineer
VAI
978-474-8800
jrockwell@rdva.com
MassDOT, Dist. 6
857-368-6154
erin.kinahan@state.ma.us
MassDOT, Boston
857-368-9638
corey.oconnor@state.ma.us
MassDOT
857-368-6313
amitai.lipton@state.ma.us
Erin Kinahan
Corey O’Connor
Traffic Safety Eng.
Amitai Lipton
Lisa Schletzbaum
Traffic Safety Eng.
MassDOT Safety
857-368-9634
lisa.schletzbaum@state.ma.us
James Donovan
Town Engineer
Town of Canton
781-821-5063
jdonovan@town.canton.ma.us
Vivek Trivedi
Permits Engineer
MassDOT
857-368-6319
vivek.trivedi@dot.state.ma.us
Ken Berkowitz
Chief of Police
Canton
781-760-4594
kberkowitz@town.canton.ma.us
Lisa Grega
Assist. Town Eng.
Canton PW
781-821-5063
lgrega@town.canton.ma.us
Stephen Boudreau
Engineer
VAI
978-474-8800
sboudreau@rdva.com
Charles Doody
Fire Chief
Canton
781-575-6654
cdoody@town.canton.ma.us
Page 1 of 1
Road Safety Audit—Route 138 (Turnpike Street) at Randolph Street, Canton, Massachusetts
Prepared by Vanasse & Associates, Inc.
Appendix C. Detailed Crash Data
Functional Desi~n Report-
i 'niveni~r
,\'tation Oet•e/opment- Canton, .Ha.Hac/w.\l!tt\'
No
RANDOLPH
7,11,30,32
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9
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STREET
J ~6,13,15
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t~
4
118,19,22. --------------­
~31,35
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26
14
29
25
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8
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124,33
---­
CANTON
VETERINARY
HOSPITAL
r,l
CRASH TYPE
'\A
R
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Cop)l'lght
©
,jW';l,
Turning Movement (TM)
Rear End (RE)
Backing Up (BU)
~
• I« •
Head On (HO)
- -­
Lane Change (LC)
~-
Fixed Object (FO)
--o
Out of Control (OC)
Side Swipe (SS)
?"
~
I
•
<:::::::::::::
Pedest./Bicycle (P /B)
Vanasse & Associates, Inc.
1
817/ 21)14 12 ;,;:: o:, ?1,1
2014 by VAl.
Angle (A)
All Rl9hta Reserved.
6
Collision Diagram
Randolph Street and Route 138
Motor Vehicle Crashes
Crash #
1
Date
Randolph Street at Route 138
Day
4/23/2010 Friday
Time
1:26 AM
Crash typee
Severitya
R/Sb
Wc
Ld
Primary Cause
ANGLE/TURN.MVMT
INJURY
Dry
Clear
Dark, Lighted Rd
Failed to yield right of way
2
7/13/2010 Tuesday
2:00 PM
ANGLE/TURN.MVMT
INJURY
Dry
Clear
Daylight
Disreguard of traffic signs
3
7/13/2010 Tuesday
2:14 PM
ANGLE/TURN.MVMT
NO INJURY
Dry
Clear
Daylight
Erratic/reckless/aggressive manner
4
9/3/2010 Friday
11:16 AM
REAR‐END
NO INJURY
Dry
Clear
Daylight
Inattention
5
9/10/2010 Friday
3:06 PM
REAR‐END
NO INJURY
Dry
Clear
Daylight
No Improper driving
6
7
11/4/2010 Thursday
11/16/2010 Tuesday
4:32 PM
ANGLE/TURN.MVMT
NO INJURY
Dry
Rain
Dusk
6:07 PM
REAR‐END
NO INJURY
Wet
Rain
Dark, Lighted Rd
Vehicle crossed double yellow line into other vehicle while turning right
10:45 AM
SIDESWIPE
NO INJURY
Dry
Clear
Daylight
Not driving in lanes
9
10
11
12/16/2010 Thursday
12/20/2010 Monday
2/4/2011 Friday
10:53 AM
6:21 PM
10:57 AM
ANGLE
SIDESWIPE
REAR‐END
NO INJURY
NO INJURY
NO INJURY
Dry
Snowy
Icy
Clear
Snow
Snow
Daylight
Dark, Lighted Rd
Daylight
Inattention
failure to keep in lane
No Improper driving
12
4/19/2011 Tuesday
10:50 AM
HEAD‐ON
NO INJURY
Dry
Clear
Daylight
Failed to yield right of way
13
14
4/19/2011 Tuesday
5/17/2011 Tuesday
10:56 AM
7:31 AM
ANGLE/TURN.MVMT
SIDESWIPE
NO INJURY
NO INJURY
Wet
Dry
Rain
Cloudy
Daylight
Daylight
failure to keep in lane
15
7/3/2011 Sunday
1:40 PM
ANGLE/TURN.MVMT
NO INJURY
Dry
Clear
Daylight
Failed to yield right of way
2:27 PM
11:43 AM
5:30 PM
4:46 PM
7:32 PM
11:47 PM
9:12 AM
5:16 PM
4:06 PM
6:14 PM
REAR‐END
ANGLE
REAR‐END
REAR‐END
REAR‐END
ANGLE
REAR‐END
REAR‐END
REAR‐END
REAR‐END
NO INJURY
INJURY
NO INJURY
NO INJURY
INJURY
NO INJURY
NO INJURY
NO INJURY
NO INJURY
NO INJURY
Dry
Dry
Dry
Dry
Wet
Dry
Dry
Dry
Dry
Wet
Clear
Clear
Rain
Clear
Rain
Clear
Clear
Clear
Clear
Rain
Daylight
Dark, Lighted Rd
Dusk
Dark, Lighted Rd
Dark, Lighted Rd
Daylight
Daylight
Daylight
Daylight
Daylight
No Improper driving
Inattention
Sudden stop
No Improper driving
No Improper driving
Friday
Sunday
Wednesday
Thursday
Thursday
Wednesday
Friday
Monday
Monday
Sunday
5/22/2012 Tuesday
8:30 AM
ANGLE/TURN.MVMT
NO INJURY
Wet
Rain
Daylight
Failed to yield right of way
27
6/4/2012 Saturday
8:49 PM
FIXED OBJECT
INJURY
Wet
Rain
Dark, Lighted Rd
No Improper driving
2:26 PM
ANGLE
INJURY
Dry
Clear
Daylight
Disreguard of traffic signs
Monday
Monday
Monday
Monday
4:30 PM
4:32 PM
3:51 PM
4:19 PM
REAR‐END
REAR‐END
REAR‐END
REAR‐END
NO INJURY
INJURY
INJURY
INJURY
Dry
Dry
Dry
Dry
Clear
Clear
Clear
Clear
Daylight
Daylight
Daylight
Daylight
followed too closely
Unknown
driving too fast for conditions
No Improper driving
33
7/31/2012 Tuesday
8:42 PM
REAR‐END
NO INJURY
Wet
Rain
Dark, Lighted Rd
Unknown
34
35
9/6/2012 Thursday
10/19/2012 Friday
3:53 PM
6:31 PM
ANGLE
REAR‐END
NO INJURY
NO INJURY
Dry
Wet
Clear
Rain
Daylight
Dark, Lighted Rd
No Improper driving
No Improper driving
36
11/27/2012 Sunday
3:57 PM
SIDESWIPE
NO INJURY
Wet
Other
Dusk
Inattention
29
30
31
32
6/20/2012 Wednesday
7/9/2012
7/9/2012
7/9/2012
7/9/2012
S:\Jobs\6629\ran‐138
Formatted Table
Attempted left turn, and failed to yeild to oncoming traffic
Attempted left turn, and failed to yeild to oncoming traffic
Emergency vehicles caused sudden stop
Inattention
Inattention
No Improper driving
No Improper driving
26
28
Attempted left turn, and failed to yeild to oncoming traffic
Failed to yield right of way
12/16/2010 Thursday
7/27/2011
9/11/2011
11/16/2011
11/24/2011
12/15/2011
3/29/2012
4/8/2012
4/18/2012
5/2/2012
5/8/2012
Attempted left turn, and failed to yeild to oncoming traffic
Attempted left turn, and failed to yeild to oncoming traffic
8
16
17
18
19
20
21
22
23
24
25
Comments
Attempted left turn, and failed to yeild to oncoming traffic
Vehicle ran red light and hit vehicle taking a left turn
VEH IN FRONT STOPPED ABRUPTLY
Driver tried to stop but pavement was wet so the car skidded
driver tried to pass vehicle on the right that was trying to turn right
# of Vehicles
Age of Driver 1
Age of Drivers 2/3
2
20
47
2
N/A
N/A
2
63
29
2
N/A
N/A
2
40
62
2
36
74
3
25
53/49
2
53
48
2
2
3
51
20
21
48
49
49/58
2
21
40
2
2
40
54
21
59
3
N/A
N/A
2
2
2
2
2
2
2
2
2
3
30
45
33
24
26
74
30
41
20
23
62
22
27
20
34
N/A
47
43
61
21/48
2
N/A
N/A
1
66
‐‐
2
N/A
N/A
2
2
2
3
43
19
29
19
29
43
43
59/53
2
N/A
N/A
2
2
N/A
N/A
N/A
N/A
2
49
47
8/21/2014
Count of Month
Crashes by Month
30.00%
25.00%
25.00%
20.00%
13.89%
15.00%
5.00%
11.11% 11.11% 11.11%
11.11%
10.00%
Total
5.56%
2.78% 2.78%
2.78%
2.78%
0.00%
JAN
FEB
MAR
APR
MAY
JUN
JUL
SEP
NOV
DEC
OCT
Month
Count of Day
Crashes by Day
25.00%
20.00%
19.44%
19.44%
19.44%
16.67%
15.00%
11.11%
Total
8.33%
10.00%
5.56%
5.00%
0.00%
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Day
Crashes by Time of Day
50%
44%
45%
40%
35%
30%
22%
25%
Series1
19%
20%
15%
8%
10%
5%
6%
0%
0%
2‐6am
S:\Jobs\6629\ran‐138
6‐10am
10‐2pm
2‐6pm
charts
6‐10pm
10‐2am
8/21/2014
Count of Crash typee
Crash Type
60.00%
50.00%
40.00%
30.00%
20.00%
10.00%
0.00%
50.00%
19.44%
13.89%
2.78%
11.11%
2.78%
Total
Crash typee
Count of Ld
Lighting Conditions
66.67%
70.00%
60.00%
50.00%
40.00%
Total
25.00%
30.00%
20.00%
8.33%
10.00%
0.00%
Dark, Lighted Rd
Daylight
Dusk
Ld
Count of Wc
Crash Weather
70.00%
61.11%
60.00%
50.00%
40.00%
27.78%
30.00%
Total
20.00%
10.00%
5.56%
2.78%
2.78%
Snow
Cloudy
Other
0.00%
Clear
Rain
Wc
S:\Jobs\6629\ran‐138
charts
8/21/2014
Count of R/Sb
Crash Road Surface
80.00%
70.00%
60.00%
50.00%
40.00%
30.00%
20.00%
10.00%
0.00%
69.44%
Total
25.00%
Dry
2.78%
2.78%
Icy
Snowy
Wet
R/Sb
Crash Driver Ages
35%
32%
32%
30%
25%
20%
Series1
15%
10%
8%
10%
5%
10%
4%
4%
0%
0%
15‐19
S:\Jobs\6629\ran‐138
20‐29
30‐39
40‐49
50‐59
charts
60‐69
70‐79
80+
8/21/2014