ROAD SAFETY AUDIT
Providence Highway (Route 1) at High Plain Street (Route 27)
Town of Walpole
July 2013
Prepared For:
MassDOT
Prepared By:
McMahon Associates, Inc.
45 Bromfield Street
Boston, MA 02108
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Table of Contents
Background .................................................................................................................................1
Project Data.................................................................................................................................1
Project Location and Description..............................................................................................2
Audit Observations .....................................................................................................................5
Potential Safety Enhancements .................................................................................................8
Summary of Road Safety Audit...............................................................................................14
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
List of Tables
Table 1.
Table 2.
Table 3.
Participating Audit Team Members ....................................................................................... 1
Estimated Time Frame and Costs Breakdown ....................................................................... 8
Potential Safety Enhancement Summary ............................................................................. 16
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
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. The intersection of Providence Highway (Route 1) and
High Plain Street (Route 27) forms the western limit of work for a proposed roadway improvements
project on High Plain Street (Route 27), referred to as the Route 27 Roadway Improvements Project. A
Road Safety Audit was scheduled for the intersection of Providence Highway (Route 1) and High Plain
Street (Route 27) because it was identified as a high crash location (#56 in the 2010 Top Crash Locations
Report prepared by Massachusetts Department of Transportation [MassDOT] Highway Division) and is a
necessary component as part of the design process.
The purpose of the RSA is to identify both short-term and long-term safety improvements that can be
made at the subject intersection. The potential safety improvements identified during this RSA can be
evaluated and included as part of the current the Route 27 Roadway Improvements Project design process
(as applicable) or can be considered as part of future improvement efforts at the intersection.
Project Data
A Road Safety Audit was completed for the intersection of Providence Highway (Route 1) and High Plain
Street (Route 27) in the Town of Walpole on April 17, 2013. The agenda for the RSA meeting held in the
Main Meeting Room of Walpole Town Hall is provided in Appendix A of this report. As shown below in
Table 1, the audit team consisted of a multidisciplinary team with representatives from state, regional and
local agencies providing expertise in the engineering, maintenance and emergency response fields.
Contact information for the RSA attendees is provided in Appendix B of this report.
Table 1. Participating Audit Team Members
Audit Team Member
Agency/Affiliation
Lisa Schletzbaum
MassDOT Highway Safety
Corey O’Connor
MassDOT Highway Safety
Peter Calves
MassDOT Highway Safety
QingQing You
MassDOT Highway Safety
Edward C. Feeney
MassDOT District 5 Traffic
Barbara Lachance
MassDOT District 5 Traffic
Maggie Walker
Walpole Town Engineer
Bob Leblanc
Walpole Highway
Warren Goodwill
Walpole Police Department
Tim Bailey
Walpole Fire Department
Shaun Handy
MassDOT Projects Section
Erin Pacileo
McMahon Associates
Jason Adams
McMahon Associates
Dominic Caiazzo
McMahon Associates
Page 1
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Within the email invitation to each participant in the RSA background material was provided. This
information included a project location map, collision diagram, MassDOT crash data summary, crash rate
worksheets, Walpole Police crash reports, turning movement counts, and design plans for the Route 27
Roadway Improvements Project. During the RSA meeting, these materials were reviewed as a group prior
to the field visit to the intersection. During the RSA field visit, various safety issues were observed and
identified. Following the RSA field visit, the team returned to the Walpole Town Hall to discuss potential
solutions for the existing safety issues as well as some of the improvements associated with the Route 27
Roadway Improvements Project.
Project Location and Description
As shown in Figure 1, the intersection of Providence Highway (Route 1) and High Plain Street (Route 27)
is located just west of the Interstate 95 in Walpole, MA. Providence Highway (Route 1) generally
extends in a north-south direction through the Town of Walpole and provides access to commercial and
retail land uses. Providence Highway (Route 1) is classified as an urban principal arterial, is under
MassDOT jurisdiction, and has a posted speed limit of 55 miles per hour in the vicinity of the subject
intersection. High Plain Street (Route 27) generally runs in an east-west direction through the Town of
Walpole and primarily serves residential, commercial and retail land uses. High Plain Street (Route 27) is
under local jurisdiction, is classified as an urban principal arterial, and has a posted speed limit of 40
miles per hour in the vicinity of the intersection of Providence Highway (Route 1) and High Plain Street
(Route 27).
The intersection of Providence Highway (Route 1) and High Plain Street (Route 27) is a signalized
intersection which is coordinated with the signalized intersection of High Plain Street (Route 27) and the
Big Y Driveway to the west. The Providence Highway (Route 1) and High Plain Street (Route 27) signal
operates with signal phasing which allows for northbound, southbound and eastbound protected left-turns,
eastbound and westbound permissive left-turns and an exclusive pedestrian phase.
At the subject intersection, the northbound and southbound Providence Highway (Route 1) approaches
consist of four travel lanes including an exclusive left-turn lane, two thru lanes and an exclusive right-turn
lane. The eastbound High Plain Street (Route 27) approach consists of an exclusive left-turn lane, a thru
lane and a shared thru/right-turn lane. The westbound High Plain Street (Rout 27) approach consists of
two travel lanes, one shared left-turn/thru lane and one thru/right-turn lane. The pavement marking on all
approaches have faded away or do not exist, resulting in little delineation between exclusive and shared
travel lanes. Crosswalks are provided on the southern and eastern legs of the intersection. Sidewalks are
provided on the southwest, southeast and northeast corners of the intersection.
The area surrounding the intersection of Providence Highway (Route 1) and High Plain Street (Route 27)
primarily consists of commercial and retail land uses. Directly adjacent to the intersection are two gas
stations (a Gulf gas station on the northwest corner and a Mobil gas station on the northeast corner), an
Applebee’s Restaurant on the southeast corner and a shopping plaza on the southwest corner. Each of
these land uses contains a driveway within 100 feet of the intersection of Providence Highway (Route 1)
and High Plain Street (Route 27).
Page 2
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Crash data was received from MassDOT and the Walpole Police Department. The crash data provided by
MassDOT indicates that 141 crashes have occurred between the years of 2005 and 2010 at the subject
intersection resulting in a crash rate of 1.31 accidents per million entering vehicles. This crash rate is
significantly higher than both the statewide and District 5 average crash rates of 0.80 and 0.77 accidents
per million entering vehicles, respectively. The Walpole Police Department provided crash reports for the
years 2009, 2010 and 2011. According to the data provided by the Police Department, 49 crashes were
recorded in the vicinity of the intersection of Providence Highway (Route 1) and High Plain Street (Route
27) are depicted in a crash diagram included in Appendix C of this report. According to the data provided
by MassDOT and the Walpole Police Department, the most common types of crashes were rear-end and
angle crashes.
The intersection of Providence Highway (Route 1) and High Plain Street (Route 27) was ranked 56th on
MassDOT’s statewide list of the Top Crash Intersections from 2008 to 2010. The ranking is based on the
number of crashes in MassDOT’s database which are georeferenced to a cluster area around the
intersection. The cluster area at the intersection of Providence Highway (Route 1) and High Plain Street
(Route 27) experienced 59 crashes in the three year period. Twenty of the 56 crashes involved an injury
and no fatal crashes occurred within the three year period from 2008 to 2010. The ranking is based on a
weighted system which calculates the Equivalent Property Damage Only (EPDO) rating of the
intersection. The potential causes of these crashes as observed during the RSA are documented in the
later sections of this report.
Manual turning movement counts were conducted at the intersection of Providence Highway (Route 1)
and High Plain Street (Route 27) in January 2010 during the weekday afternoon and Saturday midday
peak hours and in February 2012 during the weekday morning peak hour. Traffic volume schematics
based on the manual turning movement counts are provided in the Appendix and were distributed at the
RSA meeting. The weekday morning peak hour occurred from 7:15 AM to 8:15AM, the weekday
afternoon peak hour occurred from 4:45 PM to 5:45 PM and the Saturday midday peak hour occurred
from 12:45 PM to 1:45 PM. Capacity analysis conducted as part of the Route 27 Roadway Improvements
Project indicates that the intersection of Providence Highway (Route 1) and High Plain Street (Route 27)
currently operates with overcapacity movements during all three peak hours.
The Route 27 Roadway Improvements Project is a proposed project for the segment of High Plain Street
(Route 27) from Providence Highway (Route 1) to the Walmart Driveway. The project proposes to
restripe this segment of High Plain Street (Route 27), signalize the High Plain Street (Route 27)/Walmart
Driveway intersection, and modify the existing signal at Providence Highway (Route 1) and High Plain
Street (Route 27). The restriping along High Plain Street (Rout 27) would result in an exclusive left-turn
lane, a through lane and a shared through/right-turn lane for the westbound approach to its intersection
with Providence Highway (Route 1). Two travel lanes would also be restriped in the eastbound direction
along High Plain Street (Route 27), departing its intersection with Providence Highway (Route 1). The
proposed improvements would also include the introduction of an exclusive left-turn signal phase for the
westbound High Plain Street (Route 27) approach. Additionally, the exclusive right-turn lane pavement
markings on the southbound Providence Highway (Route 1) approach to its intersection with High Plain
Street (Route 27) are proposed to be removed in order to increase capacity and reduce queuing for the
southbound Route 1 approach.
Page 3
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Audit Observations
During the RSA meeting prior to the field visit, a brief introduction of the RSA process and a summary of
traffic volumes and crash information were presented to the audit participants. Following this brief
presentation the members of the audit team were asked to discuss the existing issues that may affect
safety at the intersection of Providence Highway (Route 1) and High Plain Street (Route 27). The audit
team then visited the site as a group, at which time observations of various safety concerns and
deficiencies were identified and documented. Provided below is a list of the safety concerns that were
identified during the RSA:


Roadway Conditions
o
The pavement markings on most approaching and departing travel lanes are either very
faded or do not exist. The exclusive lane markings including the arrows and “ONLY”
pavement markings on the southbound Providence Highway (Route 1) right-turn lane are
very faded. The southbound right-turn lane was originally designed and constructed as a
shared through/right-turn lane. However, at some point the lane was restriped as an
exclusive right-turn lane.
o
Exclusive lane pavement markings for the northbound, southbound and eastbound
left-turn lanes and the northbound right-turn lanes do not currently exist and there are no
lane usage signs for any of the intersection approaches. It was noted that the lack of
pavement markings and signage may contribute to driver confusion for vehicles traveling
through the intersection.
o
Audit team members noted that the pavement is often slick when wet, and that the rear
tires can be heard spinning out in the rain. The pavement appears to be smooth and has
minor rutting at some locations within the intersection.
Roadway Alignment & Intersection Geometry
o
Audit participants commented on the
“Excess” pavement and faded pavement
seemingly unnecessary pavement
markings on southwest corner
width on the southwest and northeast
corners of the intersections. This
additional pavement, likely to provide
adequate space for tractor trailer
u-turns, creates a very long crossing
and makes the intersection very wide.
The intersection width, in conjunction
with the signal placement in the
middle of the intersection, may be
resulting in right angle crashes
between vehicles that think they are
able to clear the intersection during
the clearance interval. Also, with this intersection width, many cars attempting to make
left-turns from High Plain Street (Route 27) enter the intersection and become trapped in
the middle of intersection as the signal turns red.
Page 5
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
o


On the west side of the Providence Highway (Route 1)/High Plain Street (route 27)
intersection, the two westbound lanes on High Plain Street (Route 27) become one
exclusive left-turn lane and one through lane at the Big Y intersection. It was noted that
vehicles traveling through on High Plain Street (Route 27) westbound often “race” in
order to merge into the single through lane and avoid the exclusive left-turn lane at the
Big Y traffic signal.
Signal Phasing & Timing
o
The existing traffic signal does not provide a protected left-turn phase for the westbound
movement from High Plain Street (Route 27) to Providence Highway (Route 1)
southbound. The lack of a protected only left-turn phase often results in trapped vehicles
within the intersection.
o
Existing signal timings do not appear to provide sufficient green time for each of the
intersection movements during the peak traffic periods.
o
There are often issues with the traffic signal resulting in the signal going into flash mode.
o
The audit participants noted that the exclusive pedestrian phase was too short to allow a
pedestrian to cross the entirety of Providence Highway (Route 1). The length of the
pedestrian phase was long enough for a pedestrian to cross to the median on Providence
Highway (Route 1), but would then need to activate the push button again to cross the
remainder of the roadway. The audit team also noted that most pedestrians cross the
entire roadway even though the protected pedestrian phase has ended.
Signal Visibility & Alignment
o
The existing traffic signals appear to
be dim and this is likely due to the
lack of backplates on the signal
heads. The signal heads on the
southbound Providence Highway
(Route 1) approach appear dim from
afar and only appear brighter within
approximately 100 feet of the
intersection.
o
It was noted that the signal heads for
the westbound High Plain Street
Route 27 WB signal alignment & guide signs
(Route 27) approach may not be
visible for the minimum distance required by the MUTCD due to the location of the
signal heads, the horizontal alignment of High Plain Street (Route 27) and the placement
of the Route 1 guide signs. The westbound signal heads do not appear to have the
required eight foot separation.
o
All of the signal heads appear to be very close to stop bars and are not well aligned with
each approach lane, specifically for the High Plain Street (Route 27) approaches. There
are no signals on the far left side of the intersection for eastbound and westbound
Page 6
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
vehicles making a left-turn during the permissive phase, and therefore these left-turning
vehicles are unable to see when the signal enters into the clearance interval.
o


The span wires for the Route 1 traffic signals appear to be low and may be difficult to see
when behind a large truck or heavy vehicle. This is a somewhat common issue with
overhead signal placement.
Traffic Control
o
Audit participants noted that during the peak periods of travel, the Providence Highway
(Route 1) northbound and southbound left-turn queues exceed the available storage
length and spill into the through travel lanes potentially causing some of the rear-end
crashes that have been documented on Providence Highway (Route 1).
o
Several vehicles traveling on High Plain Street (Route 27) were observed to enter the
intersection to make a permitted left-turn and would then become trapped in the
intersection resulting in the completion of their turn during the clearance interval and the
beginning of the next phase. This, in turn, causes delay for the northbound and
southbound left-turning vehicles on Providence Highway (Route 1) and may contribute to
the occurrence of crashes as seen in the collision diagram.
o
Vehicles turning right from
Providence Highway (Route 1)
southbound to High Plain Street
(Route 27) westbound often do not
stop prior to completing their rightturn on red. This may make it difficult
for vehicles to safely exit the Gulf gas
station, and may be the cause of the
two crashes shown in the collision
diagram at this driveway.
o
The eastbound High Plain Street
(Route 27) approach to the
intersection does not provide a “Left
Turn Yield on Green Ball” sign.
o
There is no local street sign for High Plain Street (Route 27) for vehicles traveling on
Providence Highway (Route 1).
Route 1 southbound right-turn lane
Pedestrian Accommodations
o
The exclusive pedestrian phase is not long enough to provide safe access across
Providence Highway (Route 1). Often times the crossing pedestrian becomes trapped in
the median island or must complete the crossing during the green time for the northbound
and southbound exclusive left-turn phase.
o
Audit members also noted the lack of a pedestrian push button or pedestrian signal head
that should be located on the northeast and southeast corners of the intersection for
pedestrians crossing High Plain Street (Route 27).
Page 7
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
o

Members of the audit team noted that it was a busy area for pedestrians and that
pedestrians have been observed crossing the northern leg of Providence Highway (Route
1) despite the lack of crosswalk or pedestrians signals.
Access Management
o
It was noted that turns in/out of the business driveways along High Plain Street
(Route 27) can sometimes result in a crash when one lane of traffic on High Plain Street
(Route 27) permits a vehicle to cross traffic while the other lane is unaware causing
potential conflict. The crash diagram depicts four crashes at the Dunkin Donuts, one at
the Mobil gas station and four at the Walmart driveway based on the crash data provided
by the Walpole Police Department.
o
Audit participants commented that the painted island on High Plain Street (Route 27) in
front of the Gulf gas station is not large enough to allow for a vehicle to wait to turn left
into the station. A vehicle waiting in the travel lane may cause additional friction and
conflict to vehicles traveling through on High Plain Street (Route 27).
Potential Safety Enhancements
After the site visit, audit participants returned to the Walpole Town Hall to discuss the safety issues and
consider various improvements. The audit participants were encouraged to consider both short and longterm improvements for each of the existing safety issues. 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
Time Frame
Costs
Short-term
<1Year
Low
<$10,000
Mid-Term
1-3 Years
Medium
$10,001-$50,000
Long-Term
>3 years
High
>$50,000
The following improvements were suggested by audit participants in order to improve existing safety
issues at the intersection of Providence Highway (Route 1) and High Plain Street (Route 27).
Roadway Conditions
The audit team participants suggested the following improvements in order to alleviate safety concerns
related to the roadway conditions at the intersection of Providence Highway (Route 1) and High Plain
Street (Route 27).

Reapply pavement markings. Pavement markings for most of the approaching and departing lanes
at the intersection are very faded and may cause driver confusion due to the lack of delineation.
This is a short-term, low cost improvement. Pavement markings will be reapplied as part of the
Route 27 Roadway Improvements Project.
Page 8
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.

Install lane usage signs. Additional lane usage signage should be placed in advance of the
Providence Highway (Route 1) and High Plain Street (Route 27) intersection as well as the High
Plain Street (Route 27) and Big Y intersection. Advance signage of the lane delineation should
assist vehicles with aligning themselves in the appropriate lanes in advance of the intersection.
This is a short-term, low cost improvement. The lane usage signs described above will be
installed as part of the Route 27 Roadway Improvements Project.

Define existing turn lanes with exclusive pavement markings. The existing left-turn lanes on the
Providence Highway (Route 1) northbound and southbound approaches and the High Plain Street
(Route 27) eastbound approach do not currently have “ONLY” or arrow pavement markings
indicating the exclusivity of the lane. The northbound exclusive right-turn lane also does not
contain exclusive pavement markings. Appropriate markings should be installed at these
locations to indicate the presence of the exclusive turn lanes. This is a short-term, low cost
improvement. Exclusive pavement markings will be applied to the appropriate lanes as part of the
Route 27 Roadway Improvements Project.

Remove the southbound right-turn lane exclusive pavement markings. The existing pavement
markings on the Providence Highway (Route 1) southbound right-turn lane are currently very
faded. The existing southbound right-turn lane should be converted to its original configuration
of a shared through/right-turn lane. This change is expected to provide additional southbound
capacity and reduce existing southbound vehicle queuing. The introduction of through volumes
in the right-most lane is also expected to limit the number of southbound vehicles able to turn
right on red mitigating the “free flow” effect observed at this movement. With three existing
receiving lanes for the southbound through movements, this is considered a short-term, low cost
improvement. The southbound right-turn lane exclusive pavement markings will be removed as
part of the Route 27 Roadway Improvements Project.

Evaluate pavement condition including the measurement of the friction coefficient. If necessary,
the intersection should be resurfaced to provide a maintained surface. The resurfacing of this
intersection is a long-term, high cost improvement that is not planned to be implemented at this
time.
Roadway Alignment & Intersection Geometry
The audit team participants suggested the following improvements in order to alleviate safety concerns
related to the existing roadway alignment and intersection geometry of Providence Highway (Route 1)
and High Plain Street (Route 27).

Investigate intersection width. The additional or “excess” pavement on the southwest and
northeast corners of the intersection makes the intersection very wide and creates a very long
crossing for pedestrians on the south side of the intersection. By conducting a study and applying
turning templates for larger heavy vehicles turning at this location, the necessary intersection
width can be determined. This intermediate step would be classified as short-term and low cost.
Turning templates can be applied to the existing intersection configuration to identify the
necessary intersection width as part of the Route 27 Roadway Improvements Project. However,
the actual improvements recommended as part of the investigation would need to be completed
through a separate process, not identified at this time.
Page 9
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.

Reconstruct intersection based on the outcome of the above investigation. The goal of the
reconstruction of this intersection would be to eliminate any unnecessary pavement (discussed
above) while providing sufficient capacity to better accommodate existing traffic demand at the
intersection. The reconstruction of the intersection would increase intersection efficiency and
would potentially minimize the length of the pedestrian crossings, the amount of red light running
and the number of vehicles that get caught in the intersection while making permitted left-turns.
This is a long-term, high cost improvement that is not currently planned for implementation as
part of any proposed projects.

Widen High Plain Street (Route 27). In order to improve operations traveling westbound along
High Plain Street (Route 27) through its intersection with Providence Highway (Route 1) and the
Big Y Driveway, an additional travel lane should be provided. The additional westbound travel
lane would eliminate the need for vehicles continuing westbound on High Plain Street (Route 27)
to merge to the single through lane prior to the Big Y intersection. At the Providence Highway
(Route 1) intersection, the westbound High Plain Street (Route 27) approach would include an
exclusive left-turn lane, through lane and shared through/right-turn lane. The widening of High
Plain Street (Route 27) on the east side of Providence Highway (Route 1) would be considered a
mid-term, high cost improvement due to the limited impacts to private property. The widening of
High Plain Street (Rout 27) west of Providence Highway (Route 1) would likely result in
significant impacts to private property resulting in a long-term, high cost improvement.
Therefore, the widening of Route 27 on the east side of Route 1 will be completed as part of the
Route 27 Roadway Improvements Project. The widening west of Route 1 would need to be
completed at some point in the future, and is not part of any projects identified at this time.
Signal Phasing & Timing
The audit team participants suggested the following improvements in order to alleviate safety concerns
related to the existing signal phasing and timing at the intersection of Providence Highway (Route 1) and
High Plain Street (Route 27).

Provide a protected westbound left-turn phase. The westbound High Plain Street (Route 27) leftturning vehicles currently do not have a protected phase causing many left-turning vehicles to
traverse the intersection and become trapped within the intersection during the eastbound through
phase. The introduction of a protected westbound left-turn phase would give these vehicles the
opportunity to travel through the intersection without conflict. This improvement should be
considered in conjunction with the widening of High Plain Street (Route 27) and the introduction
of an exclusive westbound left-turn lane. This is a short-term, medium cost improvement and
will be implemented as part of the Route 27 Roadway Improvements Project.

Evaluate existing timing plan and implement an improved timing/phasing plan. During the RSA,
a number of potential opportunities regarding the signal timings were discussed including
retiming of over capacity movements, extension of the existing pedestrian phase, and
investigation into the existing clearance interval timings. A comprehensive study should be
conducted in order to strike a balance between efficient traffic operations, sufficient pedestrian
crossing time and adequate clearance intervals as described below. The evaluation would be
considered a short-term, low cost solution and will be conducted as part of the design process for
the Route 27 Roadway Improvements Project.
Page 10
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
o
Many movements at the intersection are currently over capacity, resulting in extensive
queuing and may benefit from a reevaluation of the existing signal timing.
o
The existing pedestrian phase is too short for pedestrians to cross Providence Highway
(Route 1) and either results in pedestrians becoming stranded on the median island or
completing their crossing after the vehicles have received a green indication. The
exclusive pedestrian phase timings should be reassessed in order to provide the maximum
crossing time possible without impacting traffic operations at the intersection.
o
Vehicles within the intersection were observed beginning to travel through the
intersection during the clearance intervals. These yellow and all red clearance times
should be reevaluated and updated accordingly.
Feasible signal timing and phasing improvements identified by the study will be included in the
Route 27 Roadway Improvements Project. If efficient operations with increased safety amenities
cannot be achieved through signal timing and phasing adjustments then additional capacity
should be considered. The Route 27 Roadway Improvements Project currently proposes to
increase capacity at this location with an added lane on High Plain Street (Route 27). However,
further consideration for added capacity at other approaches of this intersection is not planned at
this time.

Investigate the cause of the signal entering into flash mode. The signal has been observed to enter
into the flash mode frequently. The cause of this should be investigated and handled
appropriately. The investigation, to be conducted by MassDOT, would be considered short-term.
However, depending on the extent of the issue, the solution would potentially be high cost.
Signal Visibility & Alignment
The audit team participants suggested the following improvements in order to alleviate safety concerns
related to signal visibility and alignment at the intersection of Providence Highway (Route 1) and High
Plain Street (Route 27).

Install signal head backplates. Many of the signal heads do not currently have backplates. These
signal heads should have retroflective backplates installed in order to maximize visibility of the
traffic signal indicators. This is a short-term, low cost improvement. The feasibility of installing
backplates will be investigated as part of the Route 27 Roadway Improvements Project. If
feasible the backplates would then be installed accordingly based on the load limitations of the
existing span wires at the intersection.

Investigate and remedy the cause of the dim appearance of signal heads for the Providence
Highway (Route 1) southbound approach. This is a short-term, low cost improvement to be
investigated by MassDOT.

Realign the existing signal heads for the Route 27 westbound approach. The signal indicators for
the westbound High Plain Street (Route 27) approach do not appear to meet the minimum spacing
requirements or the minimum sight distance for signal visibility. The signal heads should be
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Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
relocated to the center of each westbound travel lane to maximize visibility of these signals, to
provide the minimum sight distance for signal visibility and to meet the applicable spacing
requirements. This is a mid-term, low cost improvement that will be implemented as part of the
Route 27 Roadway Improvements Project.

Evaluate guide sign locations and relocate as necessary. The Providence Highway (Route 1)
guide signs located at the westbound High Plain Street (Route 27) approach currently block the
visibility of the signal heads to vehicles traveling westbound. The guide signs should be
relocated to maximize visibility of the westbound signals, as necessary and in conjunction with
the realignment of the existing westbound signal heads discussed above. This is a short-term, low
cost improvement and will be evaluated as part of the Route 27 Roadway Improvements Project.

Install additional traffic signals. Due to the width of the intersection, height of existing span
wires, location of the existing traffic signals and permissive left-turn phasing, vehicles are often
unable to see the overhead signals at the intersection of Providence Highway (Route 1) and High
Plain Street (Route 27).
o
Additional signals for the eastbound and westbound High Plain Street (Route 27)
permissive left-turns should be considered to meet the minimum visibility requirements
of the MUTCD, potentially on the far left side of the intersection approaches. The
installation of far left side signals will give drivers a more accurate perspective of the
intersection size and provide additional signal visibility for left-turning vehicles within
the intersection. This is a mid-term, medium cost improvement. The feasibility of the
installation of additional signals for the eastbound and westbound Route 27 approaches
will be explored as part of the Route 27 Roadway Improvements Project.
o
Additional ground mounted signals for the northbound and southbound Providence
Highway (Route 1) approaches should be considered to increase signal visibility. This is
a mid-term, medium cost improvement that is not currently proposed as part of any
existing projects.
Traffic Control
The audit team participants suggested the following improvements in order to alleviate safety concerns
related to the existing traffic control at the intersection of Providence Highway (Route 1) and High Plain
Street (Route 27).

Install “Left Turn Yield on Green Ball” signs. The permitted left-turns on the eastbound and
westbound approaches of High Plain Street (Route 27) currently operate without proper yielding
signage. The “Left Turn Yield on Green Ball” sign (R10-12) should be installed for both the
eastbound and westbound approaches at the intersection of Providence Highway (Route 1) and
High Plain Street (Route 27) as well as the westbound approach to the intersection of High Plain
Page 12
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Street (Route 27) and the Big Y Driveway. These sign installations are a short-term, low cost
improvement and will be implemented as part of the Route 27
Roadway Improvements Project.

Install a local street sign for High Plain Street (Route 27) to
provide additional guidance to vehicles traveling along and to
High Plain Street (Route 27). This is a short-term, low cost
improvement that can be installed as part of the Route 27 Roadway
Improvements Project.

Provide additional queue storage for Providence Highway (Route
1) northbound and southbound. During the peak traffic periods the
northbound and southbound Providence Highway (Route 1) leftturn lanes have been observed to extend beyond the available
storage. To better accommodate the resulting left-turn queues on
Providence Highway (Route 1) northbound and southbound, the
MUTCD 2009 – R10-12
existing left-turn lanes should be extended or additional left-turn
lanes should be constructed. An additional turn lane would provide more queue storage and
capacity where signal timing and phasing modifications cannot provide safe and efficient
operations. These are long-term, high cost improvements and are not currently planned for
implementation as part of any proposed projects.

Continue police presence and enforcement in order to ensure that vehicles turning right on red
fully stop prior to completing their turn and to prevent vehicles from entering the intersection
during the clearance interval. The enforcement at this location can be coordinated by the Town
of Walpole and is a short-term improvement, with an unknown cost.

As discussed in the previous sections, enhancements such as protected/permitted left-turn
phasing, a proposed exclusive left-turn lane and additional traffic signals for the eastbound and
westbound approaches are expected to limit the number of vehicles being trapped within the
intersection. Recommendations for implementation are provided in the previous sections.
Pedestrian Accommodations
The audit team participants suggested the following improvements in order to alleviate safety concerns
related to the pedestrian accommodations at the intersection of Providence Highway (Route 1) and High
Plain Street (Route 27).

Install a pedestrian push button and signal head. The northeastern and southeastern corners of the
intersection do not currently contain a pedestrian push button or pedestrian signal head for the
crossing across High Plain Street (Route 27). The installation of this equipment would provide
safer pedestrian access across High Plain Street (Route 27) and is proposed as part of the
Route 27 Roadway Improvements Project. The existing pedestrian signals are out of date and
should be replaced with countdown signals and audible indicators to provide pedestrians with the
ability to determine the safety of crossing the intersection. Implementation of pedestrian signal
equipment in accordance with Accessible Pedestrian Signal guidelines is a mid-term, medium
cost improvement that can be considered as part of the Route 27 Roadway Improvements Project.

Review pedestrian activity crossing all legs of the intersection and provide crosswalks,
appropriate signals and pedestrian push buttons in accordance with MassDOT design standards.
Page 13
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
These are a mid-term, medium cost improvements that are not planned for implementation at the
time of this report.

Evaluate existing timing plan and implement an improved timing/phasing plan. As discussed in
the Signal Phasing and Timing section, the exclusive pedestrian phase timings should be
reassessed in order to provide the maximum crossing time possible without impacting traffic
operations at the intersection. This is a short-term, low cost improvement that will be completed
as part of the overall signal and phasing review through the Route 27 Roadway Improvements
project.
Access Management
The audit team participants suggested the following improvements in order to alleviate safety concerns
related to access management in the vicinity of the intersection of Providence Highway (Route 1) and
High Plain Street (Route 27).

Modify access for businesses along High Plain Street (Route 27), east of Providence Highway
(Route 1). Left turns in and out of the business driveways create courtesy type conflict areas
along the four lane roadway. Prohibiting left-turns in and out of the High Plain Street (Route 27)
businesses would limit the number of conflict points at the driveways and would provide safer
access. This is a mid-term improvement of unknown cost. Any plans to limit access to the
businesses along Route 27 would need to be pursued by the Town of Walpole. An RSA member
noted that an additional lane on High Plain Street (Route 27) may contribute to an increase in
crash potential.

Restripe the painted median on High Plain Street (Route 27) west of Providence Highway (Route
1). The existing painted median on High Plain Street (Route 27) at the Gulf gas station driveway
does not adequately accommodate a vehicle waiting to turn. To provide sufficient space for
vehicles waiting to access the Gulf gas station, the painted island should be expanded
appropriately. The island expansion will likely need to be implemented in conjunction with the
widening of High Plain Street (Route 27) however the actual painting of the median is considered
a short-term, low cost improvement. Due to the necessary widening of Route 27 and resulting
right-of-way impacts, the expanded median is not included in any project proposals at this time.
Summary of Road Safety Audit
A summary of the potential recommendations discussed by the RSA audit team are summarized in
Table 3. Each of the recommendations are summarized based on the potential safety payoff, time frame,
approximate cost and responsible agency. The safety payoff is a subjective judgment of the potential
effectiveness of the safety recommendations listed below. Where McMahon is noted as the responsible
agency in Table 3, the corresponding improvements are to be completed as part of the Route 27 Roadway
Improvements Project. Inclusion of these improvements as part of the Route 27 Roadway Improvements
Project was not specifically discussed during the Road Safety Audit but were subsequently offered to be
part of the project. The proposed Route 27 Roadway Improvements Project is being completed by a
private entity through a permitting process which may be completed within a short time period. As the
design for the Route 27 Roadway Improvements Project progresses, a number of the potential
Page 14
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
improvements mentioned in this RSA could be included and will be discussed further as part of that
design and review process.
Page 15
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Table 3. Potential Safety Enhancement Summary
Potential Safety Enhancement
Safety
Payoff
Time Frame
Cost
Responsible
Agency
Roadway Conditions
Reapply pavement markings.
Medium
<1 Year
$8,000
McMahon
Roadway Conditions
Install lane usage signs.
Low
<1 Year
$2,000
McMahon
Roadway Conditions
Define existing turn lanes with exclusive pavement markings.
Medium
<1 Year
$5,000
McMahon
Roadway Conditions
Remove SB right-turn lane exclusive pavement markings.
Low
<1 Year
$3,000
McMahon
Roadway Conditions
Evaluate pavement condition and resurface accordingly
Medium
>3 Years
$350,000
MassDOT
Alignment & Intersection
Investigate intersection width.
Medium
<1 Year
$2,000
McMahon
Alignment & Intersection
Reconstruct intersection based on investigation.
Medium
>3 Years
$750,000
MassDOT
Alignment & Intersection
Widen Route 27 for additional westbound lane east of Route 1.
Medium
1-3 Years
$150,000
McMahon
Alignment & Intersection
Widen Route 27 for additional westbound lane west of Route 1.
Medium
>3 Years
$250,000
MassDOT/
Walpole
Signal Phasing & Timing
Provide a protected left-turn phase for Route 27 westbound.
Medium
1-3 Years
$15,000
McMahon
Signal Phasing & Timing
Reassess existing timing plan, pedestrian and clearance intervals and
implement an improved timing and phasing plan.
Medium
<1 Year
$5,000
McMahon
Signal Phasing & Timing
Investigate cause of signal frequently entering into flash mode.
Low
<1 Year
--
MassDOT
Signal Visibility & Alignment
Investigate feasibility of installation of retroflective backplates on existing
span wires. Install accordingly based on feasibility.
Low
<1 Year
$5,000
McMahon
Signal Visibility & Alignment Investigate and remedy the cause of dim appearance of Route 1 SB signals.
Low
<1 Year
$5,000
MassDOT
Signal Visibility & Alignment Realign signal heads for the Route 27 westbound approach.
Low
1-3 Years
$5,000
McMahon
Signal Visibility & Alignment Evaluate location of Route 1 guide signs and relocate accordingly.
Low
<1 year
$1,000
McMahon
Safety Issue
Signal Visibility & Alignment
Investigate feasibility of additional NB and SB Route 1 traffic signals. Install
accordingly based on feasibility review.
Low
1-3 Years
$50,000
MassDOT
Signal Visibility & Alignment
Investigate feasibility of additional EB and WB Route 27 traffic signals. Install
accordingly based on feasibility review.
Low
1-3 Years
$50,000
McMahon
Traffic Control
Install “Left Turn Yield on Green” signs for EB and WB Route 27.
Low
<1 year
$1,000
McMahon
Traffic Control
Install a local street sign for Route 27.
Low
<1 year
$800
McMahon
Traffic Control
Provide additional queue storage for the Route 1 northbound and
southbound left-turn lanes.
Medium
>3 Years
$400,000
MassDOT
Traffic Control
Continue police presence and enforcement.
Low
<1 Year
--
Walpole
Page 16
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Table 3. Potential Safety Enhancement Summary (continued)
Safety Issue
Traffic Control
Potential Safety Enhancement
Safety
Payoff
Time Frame
Cost
Responsible
Agency
Investigate feasibility of additional EB and WB Route 27 traffic signals. Install
accordingly based on feasibility review. Provide a protected left-turn phase
for Route 27 westbound. Widen Route 27 for additional westbound lane east
of Route 1.
Medium
<1 Year
*
McMahon
Low
1-3 Years
$12,000
McMahon
Low
1-3 Years
$30,000
MassDOT
Install a pedestrian push button and signal head on the northeastern and
Pedestrian Accommodation southeastern corners of the intersection. Review pedestrian equipment and
potential implementation according to APS guidelines.
Pedestrian Accommodation
Review pedestrian activity and provide crosswalks and pedestrian push
buttons and signals accordingly.
Pedestrian Accommodation
Reassess pedestrian and clearance intervals and implement an improved
timing and phasing plan.
Medium
<1 Year
**
McMahon
Access Management
Consider prohibiting left-turns in and out of Route 27 business driveways.
Medium
1-3 Years
--
Walpole
Access Management
Expand painted median at Gulf gas station.
Medium
<1 Year
$5,000
Walpole
* The objective to limit the number of left-turning vehicles trapped within the intersection will be achieved through a number of individual
enhancements described under the Alignment & Intersection and Signal Phasing & Timing sections. The resulting cost can be found under those
individual enhancements.
** The enhancement of reviewing the existing signal timing plan to maximize the exclusive pedestrian phase will be completed in conjunction with
the overall review of the signal and timing plan review described under Signal Phasing and Timing. The cost of this improvement would be
included in the cost identified in that section.
Page 17
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Appendix A. RSA Meeting Agenda
Road Safety Audit
Route 1 at Route 27
Meeting Location: Walpole Town Hall
Main Meeting Room
135 School Street
Walpole MA 02081
Wednesday, April 17, 2013
1:00 PM – 3:00 PM
Type of meeting:
High Crash Location – Road Safety Audit
Attendees:
Invited Participants to Comprise a Multidisciplinary Team
Please bring:
Thoughts and Enthusiasm!!
1:00 PM
Welcome and Introductions
1:15 PM
Review of Site Specific Material
 Crash, Speed & Volume Summaries– provided in advance
 Existing Geometries and Conditions
2:00 PM
Visit the Site
 Drive to intersection of Route 1 and Route 27
 As a group, identify areas for improvement
2:30 PM
Post Visit Discussion / Completion of RSA
 Discuss observations and finalize findings
 Discuss potential improvements and finalize recommendations
3:00 PM
Adjourn for the Day – but the RSA has not ended
Instructions for Participants:
 Before attending the RSA on April 17, 2013, participants are encouraged to drive
through the intersection 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—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Appendix B. RSA Audit Team Contact List
Participating Audit Team Members
Date:
April 17 ,2013
Audit Team Members
Location:
Walpole Town Hall
Route 1 @ Route 27, Walpole, MA
Agency/Affiliation
Email Address
Phone Number
Peter Calves
MassDOT Highway
Safety
Peter.calves@dot.state.ma.us
857-368-9620
QingQing You
MassDOT Highway
Safety
Qingqing.you@dot.state.ma.us
Corey O’Connor
MassDOT Highway
Corey.oconnor@state.ma.us
857-368-9638
Lisa Schletzbaum
MassDOT Highway
Safety
Lisa.schletzbaum@state.ma.us
857-368-9634
Edward C. Feeney
MassDOT District 5
Traffic
Edward.feeney@state.ma.us
508-889-4892
Barbara Lachance
MassDOT District 5
Traffic
Barbara.lachance@state.ma.us
805-884-4260
Seth Asante
Boston Region MPO
sasante@ctps.org
617-973-7098
Warren Goodwill
Walpole Police Dept
Wgoodwill@walpolepd.com
508-668-1095
Maggie Walker
Walpole Town Engineer mwalker@walpole-ma.gov
508-660-7211
Bob Leblanc
Walpole Highway
bleblanc@walpole-ma.gov
508-660-7382
Tim Bailey
Walpole Fire Dept
tbailey@walpolefire.com
508-668-0260
Shaun Handy
MassDOT Projects
Section
Shaun.handy@dot.state.ma.us
508-884-4255
Erin Pacileo
McMahon Associates
epacileo@mcmahonassociates.com
617-556-0020
Jason Adams
McMahon Associates
jadams@mcmahonassociates.com
617-556-0020
Dominic Caiazzo
McMahon Associates
dcaiazzo@mcmahonassociates.com
617-556-0020
857-294-5465
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Appendix C. Detailed Crash Data
Table 1
Accident Summary
2005
2006
2007
2008
2009
2010
Total
Route 27 (High Plain Street)
at Route 1
at Walmart
18
0
36
1
17
0
30
3
16
1
24
0
141
5
Type
Angle
Rear-end
Head-on
Sideswipe
Single Vehicle
Unknown
Total
49
60
5
17
3
7
141
2
2
0
1
0
0
5
Severity
Property Damage
Personal Injury
Fatality
Other
Total
94
35
0
12
141
4
1
0
0
5
Weather
Clear
Cloudy
Rain
Snow
Ice
Sleet
Fog
Unknown
Total
83
31
21
2
0
1
1
2
141
2
0
2
1
0
0
0
0
5
Time
7:00 AM to 9:00 AM
9:00 AM to 4:00 PM
4:00 PM to 6:00 PM
6:00 PM to 7:00 AM
Total
16
62
31
32
141
0
1
3
1
5
Crash Rate
District 5 Average
State Average
1.31
0.77
0.80
0.19
0.58
0.60
Source: MassDOT
INTERSECTION CRASH RATE WORKSHEET
CITY/TOWN : Walpole
DISTRICT :
4
COUNT DATE :
UNSIGNALIZED :
1/7/2010
SIGNALIZED :
x
~ INTERSECTION DATA ~
MAJOR STREET :
Route 1 (Providence Highway)
MINOR STREET(S) :
Route 27 (High Plain Street)
2 - Route 1
INTERSECTION
North
DIAGRAM
3 - Route 27
(Label Approaches)
4 - Route 27
1 - Route 1
PEAK HOUR VOLUMES
APPROACH :
1
2
3
4
DIRECTION :
NB
SB
EB
WB
PEAK HOURLY
VOLUMES (AM/PM) :
1,005
1,685
827
411
" K " FACTOR :
0.080
INTERSECTION ADT ( V ) = TOTAL DAILY
APPROACH VOLUME :
TOTAL # OF CRASHES :
141
CRASH RATE CALCULATION :
# OF
YEARS :
1.31
6
RATE =
AVERAGE # OF
CRASHES PER YEAR (
A):
( A * 1,000,000 )
( V * 365 )
Comments :
Project Title & Date:
5
Route 27 Traffic Signal and Roadway Improvements
Total Peak
Hourly
Approach
Volume
3,928
49,100
23.50
Top Crash Intersections 2008‐2010
Providence Highway (Route 1) at High Plain Street (Route 27) Walpole, Massachusetts
MassHighway Crash Report for in the year 2005
Crash
Number
City/Town
Name
Crash Date
Crash Time
Crash Severity
Manner of Collision
Road Surface
Condition
Ambient Light
Weather
Condition
1839151
1848507
1856109
1864177
1864142
1891647
1887148
1892923
2000007
1901186
1908784
1968327
1925661
1940519
1948973
1962137
1962213
1973629
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
31-Jan-2005
13-Feb-2005
27-Feb-2005
16-Mar-2005
21-Mar-2005
26-Mar-2005
29-Apr-2005
03-May-2005
01-Jun-2005
17-Jun-2005
24-Jun-2005
20-Jul-2005
27-Aug-2005
25-Sep-2005
11-Oct-2005
17-Nov-2005
22-Nov-2005
05-Dec-2005
5:21 PM
11:42 AM
7:10 PM
4:24 PM
3:33 PM
12:30 PM
12:25 PM
5:35 PM
2:00 PM
4:00 PM
4:24 PM
8:50 AM
2:10 PM
7:45 PM
3:50 PM
2:26 PM
7:50 AM
4:08 PM
Property damage only (none injured)
Not Reported
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Angle
Angle
Angle
Angle
Rear-end
Rear-end
Rear-end
Rear-end
Rear-end
Rear-end
Angle
Single vehicle crash
Rear-end
Rear-end
Rear-end
Rear-end
Sideswipe, same direction
Angle
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Wet
Dry
Wet
Wet
Dusk
Daylight
Dark - lighted roadway
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Dark - lighted roadway
Daylight
Daylight
Daylight
Dusk
Clear
Clear
Clear/Clear
Clear/Clear
Cloudy/Cloudy
Clear
Clear/Clear
Clear/Clear
Clear
Clear/Clear
Clear
Clear
Clear/Clear
Cloudy
Rain/Cloudy
Clear
Rain/Cloudy
Cloudy
MassHighway Crash Report for in the year 2006
Crash
Number
City/Town
Name
Crash Date
Crash Time Crash Severity
Manner of Collision
Road Surface
Condition
Ambient Light
Weather
Condition
1984285
2000221
2001578
2019761
2116031
2025947
2025964
2097446
2026047
2026054
2029107
2147569
2044446
2135563
2060118
2060062
2060138
2123297
2060005
2129994
2117330
2074139
2089951
2181444
2089945
2089936
2089915
2102943
2104514
2218235
2104501
2171413
2104973
2121295
2118784
2190276
2132880
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
04-Jan-2006
02-Feb-2006
18-Feb-2006
27-Mar-2006
15-Apr-2006
17-Apr-2006
18-Apr-2006
21-Apr-2006
24-Apr-2006
25-Apr-2006
28-Apr-2006
08-May-2006
09-May-2006
24-May-2006
07-Jun-2006
09-Jun-2006
16-Jun-2006
16-Jun-2006
24-Jun-2006
21-Jul-2006
29-Jul-2006
10-Aug-2006
21-Aug-2006
26-Aug-2006
28-Aug-2006
28-Aug-2006
29-Aug-2006
17-Sep-2006
02-Oct-2006
04-Oct-2006
05-Oct-2006
18-Oct-2006
22-Oct-2006
02-Nov-2006
02-Nov-2006
09-Nov-2006
07-Dec-2006
6:26 AM
8:05 AM
3:25 PM
8:19 AM
6:05 PM
6:35 PM
8:51 PM
12:00 PM
4:31 PM
10:35 PM
4:46 PM
7:00 PM
11:05 AM
8:50 AM
7:51 AM
5:08 PM
9:12 AM
5:15 PM
00:00 AM
8:00 AM
10:50 AM
12:11 PM
6:41 PM
10:30 AM
6:50 AM
11:35 AM
2:05 PM
7:45 PM
3:58 PM
11:30 AM
1:47 PM
7:40 AM
11:59 AM
7:38 AM
10:41 AM
8:10 AM
7:56 AM
Rear-end
Angle
Rear-end
Angle
Sideswipe, same direction
Rear-end
Rear-end
Not reported
Rear-end
Sideswipe, same direction
Angle
Not reported
Rear-end
Sideswipe, same direction
Sideswipe, same direction
Rear-end
Angle
Rear-end
Sideswipe, same direction
Rear-end
Angle
Rear-end
Angle
Rear-end
Rear-end
Angle
Rear-end
Rear-end
Angle
Not reported
Angle
Rear-end
Rear-end
Rear-end
Angle
Rear-end
Rear-end
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Wet
Wet
Dry
Not reported
Dry
Dry
Wet
Dry
Dry
Dry
Wet
Wet
Dry
Dry
Dry
Dry
Wet
Dry
Wet
Dry
Dry
Dry
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Dark - lighted roadway
Daylight
Daylight
Dark - lighted roadway
Daylight
Not reported
Daylight
Dark - lighted roadway
Daylight
Daylight
Daylight
Daylight
Dark - lighted roadway
Dark - lighted roadway
Dark - lighted roadway
Daylight
Daylight
Dark - lighted roadway
Daylight
Daylight
Daylight
Dark - lighted roadway
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Clear
Clear
Cloudy/Clear
Clear
Clear
Cloudy
Cloudy/Cloudy
Clear
Cloudy
Rain
Clear
Not Reported
Cloudy/Cloudy
Clear
Cloudy/Rain
Cloudy
Clear/Clear
Clear
Rain
Rain
Clear
Clear
Clear/Cloudy
Clear
Cloudy
Cloudy
Rain/Rain
Clear/Clear
Clear/Clear
Clear
Clear/Clear
Cloudy
Clear
Rain
Clear/Clear
Rain
Clear/Clear
Non-fatal injury
Not Reported
Not Reported
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Not Reported
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Non-fatal injury
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Not Reported
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Not Reported
Property damage only (none injured)
Property damage only (none injured)
MassHighway Crash Report for in the year 2007
Crash
Number
City/Town
Name
Crash Date
Crash
Time
Crash Severity
Manner of Collision
Road Surface
Condition
Ambient Light
Weather Condition
2149197
2281312
2167870
2181100
2316589
2192737
2217293
2340184
2217441
2220767
2224170
2224004
2241078
2374373
2247176
2258148
2258139
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
16-Jan-2007
13-Feb-2007
24-Mar-2007
29-Mar-2007
13-May-2007
18-May-2007
29-Jun-2007
14-Jul-2007
18-Jul-2007
27-Jul-2007
05-Aug-2007
29-Aug-2007
20-Sep-2007
27-Sep-2007
18-Oct-2007
21-Nov-2007
22-Nov-2007
2:06 PM
12:20 PM
6:11 PM
00:00 AM
12:15 PM
8:25 AM
4:20 PM
4:40 PM
1:38 PM
11:31 AM
9:33 AM
7:09 AM
8:53 AM
5:15 AM
7:54 AM
4:53 PM
10:08 AM
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Not Reported
Angle
Not reported
Rear-end
Angle
Rear-end
Sideswipe, same direction
Angle
Rear-end
Angle
Rear-end
Rear-end
Head-on
Sideswipe, same direction
Rear-end
Rear-end
Angle
Rear-end
Dry
Dry
Dry
Dry
Not reported
Wet
Dry
Dry
Wet
Dry
Dry
Dry
Dry
Dry
Dry
Wet
Dry
Daylight
Daylight
Dusk
Dark - lighted roadway
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Dark - lighted roadway
Daylight
Cloudy
Clear
Cloudy
Clear/Clear
Clear
Rain/Cloudy
Cloudy/Cloudy
Clear
Cloudy/Rain
Clear/Clear
Clear/Clear
Clear/Clear
Clear/Clear
Clear
Cloudy/Cloudy
Fog, smog, smoke
Clear
M assDOT Crash Report for in the year 2008
Crash
Number
City/Town
Name
Crash Date
Crash
Time
Crash Severity
Manner of Collision
Road Surface
Condition
Ambient Light
Weather Condition
2282371
2282186
2282751
2282643
2445896
2282587
2439710
2282419
2298596
2417010
2299407
2439197
2432249
2316364
2341854
2511192
2504500
2379943
2379992
2380290
2380234
2391378
2390932
2406392
2406150
2488174
2489204
2418030
2423773
2417915
2367518
2363578
2363566
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
01-Jan-2008
10-Jan-2008
13-Jan-2008
14-Jan-2008
18-Jan-2008
23-Jan-2008
25-Jan-2008
26-Jan-2008
09-Feb-2008
03-Mar-2008
07-Mar-2008
19-Mar-2008
22-Mar-2008
03-Apr-2008
05-Jun-2008
07-Jun-2008
02-Sep-2008
05-Sep-2008
13-Sep-2008
23-Sep-2008
24-Sep-2008
08-Oct-2008
14-Oct-2008
04-Nov-2008
14-Nov-2008
28-Nov-2008
30-Nov-2008
10-Dec-2008
11-Dec-2008
11-Dec-2008
30-Jul-2008
06-Aug-2008
08-Aug-2008
9:38 AM
4:26 PM
11:33 PM
11:06 AM
11:45 AM
10:09 AM
3:07 PM
1:30 PM
8:56 PM
4:00 AM
5:18 PM
8:00 AM
9:15 AM
9:41 AM
3:58 PM
2:20 AM
12:00 PM
12:54 PM
11:20 PM
8:55 PM
4:34 PM
5:58 PM
12:15 PM
11:38 AM
3:05 PM
6:45 PM
8:45 PM
10:47 AM
5:01 PM
5:10 PM
4:38 PM
4:13 PM
5:13 PM
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Not Reported
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Not Reported
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Not Reported
Non-fatal injury
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Not Reported
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Single vehicle crash
Sideswipe, same direction
Angle
Angle
Head-on
Head-on
Rear-end
Sideswipe, same direction
Angle
Rear-end
Rear-end
Not reported
Rear-end
Angle
Rear-end
Not reported
Not reported
Angle
Rear-end
Angle
Sideswipe, opposite direction
Angle
Sideswipe, same direction
Sideswipe, opposite direction
Sideswipe, same direction
Rear-end
Angle
Head-on
Angle
Sideswipe, same direction
Angle
Rear-end
Rear-end
Dry
Dry
Dry
Snow
Wet
Dry
Dry
Dry
Wet
Dry
Dry
Wet
Dry
Dry
Wet
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Wet
Wet
Wet
Wet
Dry
Wet
Dry
Daylight
Daylight
Dark - lighted roadway
Daylight
Dark - lighted roadway
Daylight
Daylight
Daylight
Dark - lighted roadway
Daylight
Daylight
Daylight
Dark - roadway not lighted
Daylight
Daylight
Dark - unknown roadway lighting
Daylight
Daylight
Dark - lighted roadway
Dark - lighted roadway
Daylight
Daylight
Daylight
Daylight
Daylight
Dusk
Dark - lighted roadway
Daylight
Dark - lighted roadway
Dark - lighted roadway
Daylight
Daylight
Daylight
Clear/Clear
Clear
Cloudy/Cloudy
Snow/Cloudy
Cloudy
Clear/Clear
Clear/Clear
Clear
Cloudy/Snow
Clear
Clear/Clear
Rain
Clear
Clear/Clear
Rain/Cloudy
Clear
Clear
Clear
Cloudy
Clear
Not Reported
Clear
Clear/Clear
Clear/Clear
Cloudy/Cloudy
Clear
Rain
Rain/Severe crosswinds
Rain/Cloudy
Rain
Clear
Cloudy/Rain
Clear
MassDOT Crash Report for in the year 2009
Crash
Number
City/Town
Name
Crash Date
Crash
Time
Crash Severity
Manner of Collision
Road Surface
Condition
Ambient Light
Weather Condition
2429147
2425368
2437059
2446679
2449419
2454957
2468126
2476903
2482335
2490711
2494095
2647555
2514017
2514144
2537859
2558049
2719959
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
07-Jan-2009
19-Jan-2009
14-Feb-2009
15-Mar-2009
31-Mar-2009
03-Apr-2009
06-May-2009
06-Jun-2009
11-Jun-2009
29-Jun-2009
07-Jul-2009
10-Aug-2009
03-Sep-2009
09-Sep-2009
02-Nov-2009
18-Dec-2009
05-Nov-2009
8:55 PM
4:35 PM
5:27 PM
2:42 PM
3:10 PM
1:58 PM
10:12 AM
5:35 PM
1:31 PM
7:08 PM
4:37 PM
8:15 PM
10:35 PM
9:14 AM
6:36 AM
12:13 PM
10:45 AM
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Non-fatal injury
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Single vehicle crash
Rear-end
Angle
Rear-end
Head-on
Angle
Rear-end
Angle
Rear-end
Rear-end
Rear-end
Angle
Angle
Angle
Sideswipe, opposite direction
Sideswipe, same direction
Angle
Ice
Dry
Dry
Dry
Dry
Wet
Wet
Dry
Dry
Dry
Wet
Dry
Dry
Dry
Dry
Dry
Snow
Dark - lighted roadway
Dusk
Dusk
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Dark - lighted roadway
Dark - lighted roadway
Daylight
Daylight
Daylight
Dawn
Sleet, hail (freezing rain or drizzle)/Cloudy
Clear
Clear
Clear/Clear
Clear/Clear
Rain/Cloudy
Clear
Clear
Cloudy
Clear/Clear
Cloudy/Rain
Clear
Clear
Cloudy/Cloudy
Clear
Clear/Clear
Rain/Clear
MassDOT Crash Report for in the year 2010
Crash Number
City/Town Name
Crash Date
Crash Time
Crash Severity
Manner of Collision
Road Surface
Condition
Ambient Light
Weather Condition
2580465
2578168
2584670
2585709
2599658
2610481
2610474
2753479
2614506
2615291
2615268
2622048
2630638
2630493
2630490
2655769
2662841
2662409
2661894
2669666
2669655
2684097
2683011
2683024
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
WALPOLE
09-Feb-2010
22-Feb-2010
05-Mar-2010
17-Mar-2010
09-May-2010
15-May-2010
19-May-2010
09-Jun-2010
14-Jun-2010
17-Jun-2010
20-Jun-2010
14-Jul-2010
21-Jul-2010
04-Aug-2010
09-Aug-2010
16-Oct-2010
20-Oct-2010
01-Nov-2010
03-Nov-2010
10-Nov-2010
17-Nov-2010
14-Dec-2010
18-Dec-2010
28-Dec-2010
7:15 PM
5:35 PM
9:17 PM
3:24 PM
6:05 PM
2:15 PM
5:32 PM
4:15 PM
2:53 PM
9:22 AM
4:58 PM
1:19 PM
2:55 PM
5:57 PM
2:32 PM
1:03 PM
5:28 PM
3:21 PM
1:26 PM
6:18 AM
5:11 PM
9:40 PM
11:22 AM
4:25 PM
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Not Reported
Non-fatal injury
Property damage only (none injured)
Non-fatal injury
Non-fatal injury
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Non-fatal injury
Property damage only (none injured)
Property damage only (none injured)
Non-fatal injury
Property damage only (none injured)
Non-fatal injury
Angle
Angle
Angle
Rear-end
Angle
Rear-end
Rear-end
Angle
Rear-end
Rear-end
Angle
Angle
Angle
Angle
Rear-end
Angle
Angle
Rear-end
Angle
Rear-end
Rear-end
Angle
Sideswipe, same direction
Rear-end
Dry
Dry
Dry
Dry
Dry
Dry
Wet
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Wet
Dry
Dry
Dry
Wet
Dark - lighted roadway
Dusk
Dark - lighted roadway
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Daylight
Dark - lighted roadway
Dark - lighted roadway
Daylight
Daylight
Cloudy
Cloudy
Clear
Clear/Clear
Cloudy
Clear/Clear
Cloudy/Rain
Clear
Clear
Cloudy
Cloudy
Rain/Cloudy
Clear
Clear
Clear/Clear
Clear
Clear
Clear/Clear
Clear
Rain/Cloudy
Clear
Clear
Clear
Cloudy
Road Safety Audit—Providence Highway (Route 1) at High Plain Street (Route 27)—Walpole, MA
Prepared by McMahon Associates, Inc.
Appendix D. Additional Information
Route 1
(Providence Highway)
31
352
1645
198
145
246
313
49
195
95
Figure 3
2012 Base Year Weekday Morning
Peak Hour Traffic Volumes
Route 27 Improvements
Walpole, Massachusetts
23
8
105
489
29
23
Walmart Driveway
SCHEMATIC­
NOT TO SCALE
55
329
SITE
23
263
Route 27
(High Plain Street)
Route 1
(Providence Highway)
70
269
558
108
158
268
401
14
205
192
Figure 4
2012 Base Year Weekday Afternoon
Peak Hour Traffic Volumes
Route 27 Improvements
Walpole, Massachusetts
117
44
181
1378
92
34
Walmart Driveway
SCHEMATIC­
NOT TO SCALE
140
306
SITE
49
304
Route 27
(High Plain Street)
Route 1
(Providence Highway)
44
210
618
165
266
320
259
60
214
183
Figure 5
2012 Base Year Saturday Midday
Peak Hour Traffic Volumes
Route 27 Improvements
Walpole, Massachusetts
124
52
252
776
246
64
Walmart Driveway
SCHEMATIC­
NOT TO SCALE
362
335
SITE
88
349
Route 27
(High Plain Street)