ROAD SAFETY AUDIT
Leominster Rd (Route 12) at Chocksett Rd
Town of Sterling
December 18, 2012
Prepared By:
Massachusetts Department
of Transportation
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
Table of Contents
Project Data ..................................................................................................................................1
Background ...................................................................................................................................1
Project Location and Description..................................................................................................2
Audit Observations and Safety Issues...........................................................................................6
Potential Safety Enhancements....................................................................................................9
Summary of Road Safety Audit ...................................................................................................13
List of Appendices
Appendix A.
Appendix B.
Appendix C.
Appendix D.
RSA Meeting Agenda
RSA Audit Team Contact List
Detailed Crash Data
Additional Information
List of Figures
Figure 1. Location Map................................................................................................................4
Figure 2. Location Detail .............................................................................................................5
List of Tables
Table 1. Participating Audit Team Members ...............................................................................1
Table 2. Estimated Time Frame and Costs Breakdown ................................................................9
Table 3. Potential Safety Enhancement Summary ....................................................................14
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
Project Data
A Road Safety Audit for the intersection of Leominster Road (Route 12) Chocksett Road was held on
September 25, 2012 at the Sterling Police Department. As indicated in Table 1, the audit team consisted
of representatives from State, Regional and Local agencies and included a cross-section of engineering,
planning, emergency response, and local expertise.
Table 1. Participating Audit Team Members
Table 1. Participating Audit Team Members
Audit Team Member
Agency/Affiliation
Lisa Schletzbaum
MassDOT, Safety
Corey O’Connor
MassDOT, Safety
Joe Frawley
MassDOT, District 3 Traffic
Alolade Campbell
MassDOT, District 3 Traffic
George Snow
Montachusett Regional Planning Commission
Terri Ackerman
Town of Sterling
David Favreau
Town of Sterling
Bill Tuttle
Town of Sterling, DPW
David Hurlbut
Town of Sterling, Fire Department
Gary Chamberland
Town of Sterling, Police Chief
John Diaz
Greenman-Pedersen, Inc
Rep Kimberly Ferguson
Massachusetts House of Representatives
Rep Harold Naughton
Massachusetts House of Representatives
Carly Antonellis
Sen. Flanagan’s Office
Paul Sushchyk
Berg and Laipson
Ron Furmaniuk
Sterling Board of Selectmen
Melissa McKeon
Background
The Federal Highway Administration defines a Road Safety Audit (RSA) as the formal safety
examination of an existing or future road or intersection by an independent, multidisciplinary team. The
purpose of an RSA is to identify potential safety issues and possible opportunities for safety
improvements considering all roadway users. A Road Safety Audit was scheduled for the intersection of
Leominster Road (Route 12) and Chocksett Road as requested by the Town of Sterling. The intersection
has a long history of high speed crashes creating a concerning amount of personal injuries and even a
fatality. Detailed crash information can be found in Appendix C. The Sterling Chief of Police brought
the crash history to the MassDOT's Safety Section's attention after a recent fatal crash at the intersection.
The Town of Sterling and MassDOT District 3 office have been discussing an intersection reconstruction
Page 1
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
project using TIP funding for several years. The RSA is intended to identify potential short and long term
safety improvements that can be made at the intersection, which can then be incorporated into a planned
reconstruction project to the greatest extent practical.
Project Location and Description
The intersection of Leominster Road (Route 12) and Chocksett Road is located in the north/east section of
the town of Sterling, MA. The intersection is a large four legged intersection and is stop controlled on
Chocksett Road approaches except for westbound rights, which is yield controlled.
To the north of the intersection
N
Leominster Road (Route 12) is
Meola’s Wayside
Ice Cream
functionally classified as an urban
minor arterial while to the south of the
intersection it is classified as a rural
major collector road. All portions of
Leominster Road are owned by
MassDOT. Leominster Road has a
LEOMINSTER RD
legal posted speed limit of 55 miles per
(RT 12)
hour around the audit site. Detailed
MassDOT speed regulations can be
found in Appendix D. Near the audit
site Leominster Road is a four lane road
(2 lanes in each direction) separated by
CHOCKSETT RD
a raised curb median. There are left
turn pockets for both north and south
Intersection of Leominster Road and Chocksett Road
left turning vehicles to provide access to
Chocksett Road. Northbound vehicles
have about a 100 foot long right turn lane on Leominster Road that allows access to Chocksett Road.
Route 12 is a north/south running state highway running through central Massachusetts from the
Connecticut state line in Dudley, MA to the New Hampshire state line in Winchendon, MA. Passing
through Sterling, Route 12 is known as Worcester Road and Leominster Road and serves as a connection
to Worcester to the south and Leominster and Fitchburg to the north. Interstate 190 parallels most of
Route 12 and handles most of the north/south through traffic within town. It should be noted that there is
an interchange between Interstate 190 and Route 12 about a half mile north of the audit site.
To the east of the intersection Chocksett Road is functionally classified as an urban minor arterial and
owned by MassDOT. Traveling eastbound Chocksett Road has a legal posted speed limit of 50 miles per
hour beginning 200 feet east of the intersection. Traveling westbound Chocksett Road has a legal posted
speed limit of 25 miles per hour for 0.15 miles east of the intersection and then 50 miles per hour
continuing east. Approaching the intersection, about 450 feet prior to the stop bar, eastbound and
westbound Chocksett Road are divided by a raised curb median. About 85 feet east of the stop bar
westbound traffic is channelized into through/left turns and right turns by a raised curbed island.
Page 2
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
Through/left turns are stop controlled while the right turning vehicles have about a 175 foot channelized
right turn lane before yielding onto Leominster Road northbound.
To the east of the intersection Chocksett Road is an east/west oriented road that runs about 1.2 miles east
of Leominster Road until it terminates and intersects with Route 62 to the east. This section of road is an
important short cut between Route 62 and Route 12 and allows quick access to Interstate 190 from the
east.
To the west of the intersection Chocksett Road is classified as a local road and is locally owned. There is
no speed regulation for this portion of Chocksett Road. This stretch of Chocksett Road is stop controlled
at the intersection of Leominster Road. This portion of Chocksett Road is an east/west oriented road that
only runs for about 400 feet west of Leominster Road before terminating and intersecting with
Laurelwood Road. This stretch of road mainly serves as access to a rural neighborhood to the west of the
audit location.
Land use around the audit location is a mix of light residential, light commercial, and light industrial.
Meola’s Ice Cream stand is located on the south/west corner of the intersection and is open during the
summer months only. Behind the Ice Cream stand to the west is a rural residential neighborhood. In the
north east corner of the
intersection is a small
residential community of 10
buildings with multiple
dwellings in each. East of
the intersection, off of
Chocksett Road, are some
light industrial developments.
It was noted by several audit
members that new industry
may develop around the audit
location in the near future
adding to the already present
truck traffic.
See Figures 1 and 2 on the
following pages for
maps/images of the audit
location.
Tractor trailer trucks maneuvering through the intersection of Leominster Road and
Chocksett Road.
Page 3
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
AUDIT SITE
NORTH
Figure 1. Location Map; Leominster Rd (Rt 12) and Chocksett Rd,
Sterling, MA
Page 4
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
LEOMINSTER RD (RT 12)
CHOCKSETT RD
Meola’s
Wayside Ice
Cream
NORTH
Figure 2. Location Detail; Leominster Rd (Rt 12) and Chocksett Rd,
Sterling, MA
Page 5
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
Audit Observations and Safety Issues
Following a brief introduction to the RSA process and a summary of existing geometry, crash and speed
regulation information, audit participants were asked to discuss safety trends and issues at the intersection
of Leominster Road and Chocksett Road. It became clear that the following safety trends were in high
concern:
• Straight/Left turns out of Chocksett Road westbound onto Leominster Rd
o Seven out of the eleven crashes caused injury and one out of the eleven crashes
resulted in a fatality.
•
Rear-ends crashes from Chocksett Road westbound to Leominster Road northbound
o
23 out of the total 42 crashes were of this manner, three resulting in injury.
Audit participants then conducted a site visit as a group, at which time they offered observations on safety
concerns and deficiencies. A summary of those major safety considerations is as follows:
• High speeds
o While observing vehicles, vehicle speeds were assumed to be in excess of 55 mph on
Leominster Road. Drivers westbound on Chocksett Road may misjudge an
acceptable gap distance due to the fast approaching vehicles on Leominster Road.
This may contribute to some of the angle crashes and rear-end crashes.
o Even though the speed limit drops from 50 mph to 25 mph on Chocksett Road
westbound, vehicles were observed to be ignoring the speed drop and continue to
travel at a high speed approaching the intersection. This may contribute to some of
the rear-end crashes on the yield controlled approach.
• Large pavement area
o Drivers making through/ left turns out of eastbound or westbound Chocksett Road
must pass upwards of six lanes of traffic in addition to a large shoulder and a median.
Drivers may misjudge an acceptable gap between vehicles due to the fact that they
must travel a large distance to make their maneuver. This may contribute to some of
the angle crashes.
o The large pavement area may cause drivers to feel more comfortable to drive at
higher speeds. These high speeds through the intersection cause a large difference in
speeds between Chocksett Road and Leominster Road.
• Conflicting approaches
Page 6
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
o While executing a left turn from eastbound or westbound Chocksett Road onto
Leominster Road drivers are faced with two lanes of northbound traffic, two lanes of
southbound traffic, northbound left turns, southbound left turns, and slowing traffic
for right turns from Leominster Road. With all of these approaches to consider
drivers may fail to acknowledge an approach and enter traffic at an unsafe time
and/or manner. This may contribute to some of the angle crashes.
• View Obstructions
o It was noted that the view for
vehicles from westbound
Chocksett Road was blocked by
right turning vehicles on
northbound Leominster Road as
shown in the picture to the
right. This may cause a driver
to enter traffic at an unsafe
time. This may contribute to
some of the angle crashes. .
o The view for vehicles exiting
eastbound Chocksett Road is
blocked by signs and shrub
located in the north-west corner
of the intersection. This may
cause vehicles to enter
Leominster Road at an unsafe
time.
(Above) Looking south from westbound Chocksett Road it can
be seen that a right turning vehicle on northbound Leominster
Road hides through moving vehicles on Leominster Road.
(Below) Looking north from eastbound Chocksett Road it can
be seen that signs and shrub obstruct views of vehicles.
o The view for vehicles in the left
turn lane on Leominster Road is
blocked if there is another
vehicle in the opposite/opposing
left turn lane. This may cause
vehicles to make unsafe
maneuvers and may contribute
to angle crashes
• Left turn pockets on Leominster Road
are short
o Because of the high speeds on Leominster Road vehicles need to decelerate quickly
in the left turn pocket or begin decelerating in the through lane of Leominster Road
because of the short length of the left turn pockets. This may cause rear-end crashes.
Page 7
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
Although there were no recorded rear-end crashes of this type, it is a safety issue that
should be addressed.
• Yielding onto northbound Leominster Road from westbound Chocksett Road
o Drivers yielding onto northbound Leominster Road from westbound Chocksett Road
must yield to fast moving traffic. The lack of an acceleration lane may force vehicles
to come to a complete stop at the yield sign when other vehicles are expecting to roll
through. In addition hesitant yielding drivers may require larger gaps than aggressive
drivers. This may contribute to some of the rear-end crashes.
o The configuration of the westbound Chocksett Road right turn is such that a driver
must turn his/her head over the shoulder to see if any traffic is traveling northbound
on Leominster Road causing the driver to lose sight of a vehicle in front of him/her.
This may contribute to many of the rear-end crashes.
• Large green directional sign legend for I-190 may be confusing
o It was noted during the audit that a large green directional sign located about 1000
feet south of Chocksett Road on northbound Leominster Road reading
“INTERSTATE 190 ½ MILE AHEAD” was causing confusion to some drivers.
Some drivers may mistakenly think that Chocksett Road was the entrance to
Interstate 190.
o The sign placement is at a location that results in drivers using their turn signal to
switch lanes to access I-190 at a time when a westbound Chocksett Road driver
thinks they are turning right onto Chocksett Road and proceeds through the
intersection.
• Lack of advanced warning signs on all directions
o No advanced stop/yield ahead signs on westbound Chocksett Road were present at
the intersection.
o Advanced intersection ahead signs on northbound and southbound Leominster Road
were set too close to the intersection not giving enough time for drivers to react.
• Chocksett Road name sign difficult to read
o The Chocksett Road name sign was set too far back from the curb and was too small
to read from a far distance. This may add uncertainty to drivers and cause impulsive
sudden maneuvers for unfamiliar drivers looking for Chocksett Road.
Page 8
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
Potential Safety Enhancements
After the site visit, audit participants returned to the meeting location, where the audit team was asked to
discuss the safety issues and consider improvements. Audit participants were encouraged to consider both
short and long term improvements for each issue. Each improvement considered has been categorized as
short-term, mid-term, or long-term based on the definitions shown in Table 2. Additionally, a cost
category has been assigned to each improvement based on the parameters set forth in Table 2.
Table 2. Estimated Time Frame and Costs Breakdown
Table 2. Estimated Time Frame and Costs Breakdown
Time Frame
Short-term
Mid-term
Long-term
Costs
<1 year
1–3 years
>3 years
Low
Medium
High
<$10,000
$10,000–$50,000
>$50,000
The following improvements are recommended by audit participants to improve safety issues associated
with the intersection of Leominster Road (Route 12) and Chocksett Road:
• Signing improvements
o Advanced stop/yield ahead signs

Adding advanced stop/yield ahead signs (W3-1 and W3-2) on the right and left
sides of Chocksett Road prior to the intersection will allow drivers to prepare to
stop/yield in a safe manner and make them aware of any potential queuing. This
is a low-cost and short-term improvement.
o Larger stop/yield signs

Upgrading to larger 36” stop and yield signs on the right and left sides of the road
up will emphasize the need to stop/yield and will make the signs more visible
from farther away. This is a low-cost and short-term improvement.
o Set advanced intersection ahead signs on right and left sides of Leominster Road at
recommended distance from intersection

MUTCD states that the recommended distance to set advanced intersection ahead
signs (W2-1) and name plate signs (W16-8P) is 990 feet away from the
intersection on a multilane highway with a speed of 55 m/h. Warning signs on
the right and left sides of the road is also recommended. This insures that drivers
are well aware of the intersection and name of the road ahead. This is a low-cost
and short-term improvement.
o Easier to read street name sign for Chocksett Road
Page 9
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT

By moving the Chocksett Road street name
sign closer to the curb of Leominster Road and by making it larger will allow drivers on Leominster Road to know what road it is. This is a low-cost and short-term improvement.
o Review legend of I-190 directional sign on Leominster Road northbound prior to Chocksett Road.

Redesigning the legend on the large green I­
190 directional sign located on Leominster
Road northbound prior to the Chocksett Road intersection in a way that drivers will be more
informed about the road layout may reduce
driver confusion. A possible design can be
seen on the right. A detailed draft design can be found in Appendix D.
• Remove signs and trim shrubbery on north-west corner of intersection
o Sight distance will improve dramatically for Chocksett Road eastbound by
removing/moving signs and trimming shrubbery on the north-west corner of the
intersection. It should be noted that any private sign located on private property may
require coordination with private property owners before any implementations. This is a
low-cost and short-term improvement.
• Provide an acceleration lane for westbound vehicles on Chocksett Road merging onto northbound
Leominster Road.
o By providing an acceleration lane for vehicles Chocksett Road merging onto northbound
Leominster Road merging vehicles can match the speed of vehicles on Leominster Road
northbound and merge into traffic without needing to come to a stop. This is a mid-term
and high cost improvement.
• Narrowing cross section
o The large pavement area around the intersection promotes high speeds. By reducing the
cross section of the road (narrowing the road) drivers will feel the need to travel at slower
speeds making the intersection’s operations safer. This is a high-cost and mid-term
improvement.
• Remove lanes on Leominster Road
o Converting Leominster Road into a two lane road (one lane in each direction) may be
feasible and will have the following safety benefits:
Page 10
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT

Less lanes to cross over when turning left

Less opposing vehicles making opposing maneuvers

Slower speeds due to the reduced cross section.
Removing a lane can be done as a medium-cost and short-term improvement by
reconfiguring pavement markings. It should be noted that an engineering study is required
prior to any reconfiguration.
• Offset left turn lanes on Leominster Road
o By offsetting left turn lanes on Leominster Road vehicle’s views will not be blocked by
each other if two opposite vehicles are in the left turn lanes. This modification would
require the physical modification of the existing median on Leominster Road. This is a
high-cost and mid-term improvement.
• Convert right through travel lane to right turn only lane on northbound Leominster Road
o It was suggested to convert the right through travel lane on northbound Leominster Road
to a right turn only lane and eliminate the existing northbound right turn only lane. This
proposal has the following benefits:

One through lane on Leominster Road creating less opposing lanes for Chocksett
Road

Westbound vehicles turning right from Chocksett Road will have their own lane
to enter Leominster Road eliminating the need to yield. An engineering study
including weaving effects downstream is necessary before implementation.
This is a medium-cost and mid-term improvement.
• Make Chocksett Road west of the intersection departure only (one-way westbound)
o It was suggested to make the western leg of Chocksett Road one-way away from the
intersection (westbound traffic only). This will reduce the amount of opposing
maneuvers at the intersection. It should be noted that this will restrict access to
Leominster Road from the residential neighborhoods to the west of the intersection and
may promote cut-throughs through Meola’s Wayside Ice Cream’s parking lot. The
change may also create increased traffic and affect safety at a surrounding intersection.
Coordination between the Town of Sterling and MassDOT would be required along with
a study. This would be a low-cost and short-term improvement.
• Remove section of median along Leominster Road for police vehicles
Page 11
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
o The Sterling Police Department’s driveway is located on the east side of Leominster
Road about 1000 feet north of the intersection of Chocksett Road. At this location there
is a raised curb median. In emergency situations when police need to travel south on
Leominster Road they will drive over the raised curb median which causes damage to the
undercarriage and suspension of their cruisers. Creating a break in the median at this
location in front of the police department’s driveway should be strongly considered
during intersection improvements. Note it may be necessary to install “No U Turn” signs
(R3-4) paired up with “Authorized Vehicles Only” signs (R5-11).
• Intersection control
o To enhance control at the intersection the RSA team suggested installing traffic signals or
a roundabout. Signalizing the intersection will ease the issue of conflicting maneuvers
however may introduce other safety problems such as rear-end crashes which generally
occur at signalized intersections. Low volumes from Chocksett Road also suggest that a
traffic signal may be impractical. A roundabout will also eliminate the issue of
conflicting maneuvers and will also add the advantage of traffic calming which will
reduce speeds in the area. Because of this a roundabout is preferred over traffic signals.
Thorough engineering studies must be conducted before any of these recommendations
are implemented. Both of these suggestions are high-cost and long-term improvements.
The following improvements were suggested by audit participants but are not recommended for
improvement in safety issues associated with the intersection of Leominster Road (Route 12) and
Chocksett Road:
• Transverse rumble strips on Chocksett Road
o Adding transverse rumble strips to Chocksett Road on the westbound approach to the
intersection to warn drivers of the intersection was suggested during the Audit. Due to
the noise this may be undesirable to residents in the nearby area and therefore is not a
suggested improvement.
• Reducing vehicle speeds by lowering the speed limit
o Lowering the speed limit arbitrarily will not reduce vehicle speeds. Speed limits are
based on several factors including the 85th percentile free-flow speed (refer to
MassDOT’s 2012 Procedures for Speed Zoning on State and Municipal Roadways).
Unless significant geometric changes are made to the roadway to reduce the 85th
percentile free flow speed, reducing the speed limit will be infeasible.
Page 12
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
Summary of Road Safety Audit
Table 3 summarizes potential recommendations discussed by the audit team. The recommendations are
categorized based on the potential safety payoff, as well as by time frame and cost. The safety payoff is a
qualitative judgment of the effectiveness of the potential safety improvements. Each recommendation has
a responsibility assigned to it stating whether MassDOT or the Town of Sterling would be responsible for
implementing the recommended improvement.
Page 13
Road Safety Audit—Leominster Road (Route 12) and Chocksett Road - Sterling, MA
Prepared by MassDOT
Table 3. Potential Safety Enhancement Summary
Safety Issue
Signage
Visibility
Geometry
Geometry, Visibility
Intersection Control
Potential Safety Enhancement
Safety Payoff
Time Frame
Cost
Responsible Agency
Provide advanced stop/yield ahead
signs (W3-1 and W3-2)
Low
Short
Low
MassDOT
Provide larger 36” stop/yield signs
(R1-1 and R1-2)
Low
Short
Low
MassDOT
Set advanced intersection ahead
sign further back from intersection
on right and left sides of the road
Low
Short
Low
MassDOT
Provide a more legible name sign
for Chocksett Road in a more
visible location
Low
Short
Low
MassDOT
Remove/move signs and trim
shrubbery in north-west corner of
intersection
Low
Short
Low
MassDOT
Provide acceleration lane for
vehicles merging onto Leominster
Road northbound
High
Medium
High
MassDOT
Make Chocksett Road one-way in
west of the intersection.
Low
Short
Low
Town/MassDOT
Narrowing cross section
Medium
Medium
High
MassDOT
Remove lanes on Leominster
Road
Medium
Short
Medium
MassDOT
Remove section of median for
police vehicles in front of police
station driveway on Leominster
Road
High
Medium
Medium
MassDOT
Offset left turn lanes on Leominster
Road
Low
Medium
High
MassDOT
Convert right travel lane to right
turn only lane on Leominster Road
north
High
Medium
Medium
MassDOT
Medium
Long
High
MassDOT
High
Long
High
MassDOT
Signalize the intersection
Construct a roundabout
Page 14
Appendix A. RSA Meeting Agenda
Appendix B. RSA Audit Team Contact List
Appendix C. Detailed Crash Data
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PREPARED BY:
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TIME PERIOD ANALYZED:
SOURCE OF CRASH REPORTS:
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t/.fl.YJ !DC
:C cl C.Ri.Ar[
SYMBOLS
(((.,....
________
---+~
---+1 ............... 1
---+0
TYPES OF CRASH
Moving Vehicle
Backing Vehicle
Non-Involved Vehicle
Pedestrian
~ ~
++----­
Parked V chicle
Fixed Object
---+&<6
Bicycle
---+'1\l(J
Animal
SEVERITY
Head On
..I
Turning Move
..
~c
c:s:
IS
Angle
cs ...
Rear End
Sideswipe
Out of Control
0
Injury Acctdent
0
Fatal Accident
Crash Data Summary Table
Leominster Rd (Rt 12) and Chocksett Rd; Sterling, MA
9/1/09 - 7/31/12
#
Crash
Date
Time of Day
m/d/y
1 9/9/09
2 9/28/09
1:28 PM
12:07 PM
#
Manner of Collision
Type
3
3
Angle
Angle
6
2
3
Head on
Rear-end
Angle
6:32 PM
2:55 PM
5:11 PM
5:30 PM
11:33 AM
9:47 AM
3:47 PM
5:14 PM
5:29 PM
7:20 AM
7:31 AM
7:54 AM
1:50 PM
4:45 PM
7:00 AM
6:54 AM
7:48 AM
9:11 AM
12:49 PM
12:46 PM
7:27 AM
2:00 PM
11
2
2
2
2
99
2
2
2
3
3
2
3
2
3
2
2
2
2
3
2
3
Rear-end
Rear-end
Rear-end
Rear-end
Unknown
Rear-end
Rear-end
Rear-end
Angle
Angle
Rear-end
Angle
Rear-end
Angle
Rear-end
Rear-end
Rear-end
Rear-end
Angle
Rear-end
Angle
28 10/22/11 4:16 PM
29 10/30/11 11:26 AM
3
2
Angle
Rear-end
3
2
2
2
2
2
2
2
3
3 10/28/09 6:30 PM
4 12/3/09 2:32 PM
5 12/28/09 7:48 AM
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
30
31
32
33
34
35
36
37
38
2/9/10
3/1/10
3/29/10
4/24/10
4/29/10
6/9/10
7/28/10
7/30/10
8/27/10
10/27/10
12/6/10
1/26/11
4/7/11
5/4/11
5/12/11
5/13/11
5/31/11
6/6/11
6/15/11
7/1/11
8/30/11
9/8/11
11/2/11
12/20/11
2/20/12
3/2/12
3/16/12
4/8/12
4/10/12
5/7/12
5/16/12
7:07 PM
3:49 PM
5:10 PM
4:06 PM
7:48 AM
1:35 PM
5:24 PM
1:50 PM
7:53 AM
Light Condition
Type
Weather
Condition
Type
Road Surface
Type
Driver Contributing Code
Type
D1
D2
Ages
D3
Daylight
Daylight
Dark - roadway not
lighted
Daylight
Daylight
Dark - lighted
roadway
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Clear
Clear
Dry
Dry
Inattention
Failed to yield to right of way
53
79
50
55
Rain
Clear
Clear
Wet
Dry
Wet
Wrong side or wrong way
Inattention
Failed to yield to right of way
53
80
41
45
18
59
Cloudy
Clear
Rain
Clear
Clear
Clear
Clear
Clear
Clear
Rain
Clear
Cloudy
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Cloudy
Cloudy
Cloudy
Dry
Dry
Wet
Dry
Dry
Dry
Dry
Dry
Dry
Wet
Dry
Ice
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
49
40
29
19
42
55
26
45
22
39
55
50
27
36
47
49
36
62
40
34
46
85
37
28
53
48
52
18
51
17
57
29
80
46
42
21
45
50
55
33
64
46
60
20
Cloudy
Clear
Dry
Dry
53
85
26
66
Angle
Rear-end
Rear-end
Rear-end
Rear-end
Rear-end
Rear-end
Rear-end
Angle
Daylight
Daylight
Dark - lighted
roadway
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Failed to yield to right of way
Inattention
Inattention
No Improper Driving
Other improper action
Other improper action
Inattention
Inattention
Other improper action
Failed to yield to right of way
Failed to yield to right of way
No Improper Driving
Failed to yield to right of way
Inattention
Failed to yield to right of way
Unknown
Inattention
Followed too closely
Inattention
Inattention
Inattention
Inattention
Operating Vehicle in erratic, reckless,
careless, negligent, or aggressive
Inattention
Other
Clear
Clear
Cloudy
Clear
Cloudy
Clear
Clear
Rain
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Wet
Failed to yield to right of way
Inattention
Inattention
Followed too closely
Inattention
Followed too closely
Inattention
Inattention
Failed to yield to right of way
25
33
35
60
86
26
22
30
55
56
22
47
42
42
19
60
20
27
Dark - lighted
roadway
Daylight
39 5/31/12
40 7/11/12
8:56 PM
4:31 PM
4
2
Sideswipe, same direction
Rear-end
41 7/27/12
3:53 PM
5
42 7/28/12
9:51 PM
3
Sideswipe, opposite direction Daylight
Dark - roadway not
Angle
lighted
Summary based on Crash Reports obtained from the Sterling Police Department
Comments
D4
Operator 1 thought operator 2 was turning right into
Chocksett Rd.
Operator 1 claimed to not have seen vehicle 2
53
Operator had right directional on but did not turn
Vehicle slipped on ice
Operator 1 claimed to have not seen vehicle 2
Uninvolved vehicle waved vehicle on Chocksett
Operator 2 turned right from left lane forcing vehicle
1 (motorcycle) into curb. Operator 2 claims vehicle
1 was in blind spot.
Clear
Clear
Dry
Dry
Visibility Obstructed
Followed too closely
22
27
28
20
Clear
Dry
43
49
Fatal motorcycle crash
Cloudy
Wet
Inattention
Disregarded traffic signs, signals, road
markings
23
74
Operator 1 failed to stop at stop sign
Crash Data Summary Tables and Charts
Leominster Rd (Rt 12) and Chocksett Rd; Sterling, MA
CRASH MONTH
20%
17%
15%
10%
10%
5%
14%
12%
10%
7%
10%
7%
5%
5%
2%
2%
0%
J
F
M
A
M
J
J
A
S
O
N
D
CRASH DAY OF WEEK
30%
25%
20%
15%
10%
5%
0%
26%
19%
17%
14%
12%
7%
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
5%
Sunday
CRASH TIME OF DAY
38%
40%
30%
29%
21%
20%
12%
10%
0%
6-10AM
10-2PM
2-6PM
6-10PM
0%
0%
10-2AM
2-6AM
CRASH MANNER OF COLLISION
70%
60%
50%
40%
30%
20%
10%
0%
59%
32%
2%
0%
Single
Vehicle
Crash
Rear-end
Angle
Crash Summary Data Sterling Rte 12 at Chocksett.xls
2%
Sideswipe, Sideswipe,
same
opposite
direction
direction
1 of 2
2%
0%
2%
Head on
Rear to
Rear
Unknown
9/14/2012
Crash Data Summary Tables and Charts
Leominster Rd (Rt 12) and Chocksett Rd; Sterling, MA
Daylight
0%
Dawn
Dusk
7%
5%
0%
0%
0%
Dark Lighted
Roadway
Dark Roadway
not lighted
Dark unknown
roadway
lighting
Other
Unknown
CRASH WEATHER CONDITION
67%
21%
10%
2%
0%
Unknown
0%
Other
0%
0%
0%
0%
Slush
Other
Unknown
Severe
Crosswinds
Blowing
sand, snow
0%
Fog, Smog,
Smoke
0%
Sleet, Hail,
Freezing
Rain
Rain
Cloudy
0%
Clear
70%
60%
50%
40%
30%
20%
10%
0%
0%
Snow
100%
80%
60%
40%
20%
0%
CRASH LIGHT CONDITION
88%
CRASH ROAD SURFACE
100%
80%
60%
40%
20%
0%
83%
14%
Dry
25%
20%
15%
10%
5%
0%
Wet
24%
0%
2%
Snow
Ice
0%
0%
Sand,
Water
mud, dirt, (standing,
oil, gravel moving)
CRASH DRIVER AGES
24%
21%
11%
7%
6%
6%
2%
15-20
21-29
30-39
Crash Summary Data Sterling Rte 12 at Chocksett.xls
40-49
50-59
2 of 2
60-69
70-79
80+
9/14/2012
Appendix D. Additional Information
CXl
0
(!)
- -­
! - - - -22.5- - -­
-
- - - -­ 39 .6- - - - - - -_,.._­
-----­
37.8- - - - - - _ _ . , - -
------ 60 ------------~
190 06 ; 3.0" Radius, 0.8" Border, White on Green;
Standard Arrow Custom 24.0" X 8.1" 90"; "TO" C 2K;
"LEOMINSTER" C 2K; "WORCESTER" C 2K;
~--------- 48 ----
chocksett rd; 3.0" Radius, 0.8" Border, White on Green; "CHOCKSETI" C 2K; "ROAD" C 2K; "NEXT RIGHT" C 2K;