ROAD SAFETY AUDIT
State Road at Look Street/Edgartown-Vineyard Haven
Road
Town of Tisbury
March 17, 2015
Prepared For:
Prepared By:
Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Table of Contents
Background ................................................................................................................................. 1
Project Data ................................................................................................................................. 1
Project Location Description ..................................................................................................... 2
Audit Observations and Potential Safety Enhancements........................................................ 7
Summary of Road Safety Audit ............................................................................................... 17
List of Appendices
Appendix A
Appendix B.
Appendix C.
Appendix D.
Appendix E.
RSA Meeting Agenda
RSA Audit Team Contact List
Detailed Crash Data
Speed Regulations
Count Data
List of Figures
Figure 1.
Figure 2.
Locus Map .............................................................................................................................. 5
State Road at Look Street/ Edgartown Vineyard Haven Road ............................................... 6
List of Tables
Table 1.
Participating Audit Team Members ....................................................................................... 2
Table 2.
Potential Safety Enhancement Summary – State Road at Look Street/ Edgartown Vineyard
Haven Road ..................................................................................................................................... 18
Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, 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, in consideration of all roadway users. Specific objectives of an RSA include, but are not
limited to, minimizing the risk and severity of road crashes that may be affected by the existing or future
roadway infrastructure at a specific location or nearby network, and improving the awareness of safe
design practices which are likely to result in safety benefits based upon potential safety concerns. The
Massachusetts Department of Transportation (MassDOT) has embraced the RSA program as a low cost
opportunity to make significant safety improvements at any number of stages ranging from project
development and planning through existing operation.
A Road Safety Audit was scheduled for the intersection of State Road at Edgartown Vineyard Haven
Road/Look Street, which fell within Highway Safety Improvement Program (HSIP) crash clusters in
2009, 2010, and 2011, and therefore is subject to a required RSA.
Project Data
A Road Safety Audit for the unsignalized intersection of State Road at Edgartown Vineyard Haven
Road/Look Street was held on Wednesday, December 3, 2014 at the Tisbury Police Department in
Tisbury, Massachusetts. Table 1 provides a list of the participating audit team members and their
associated affiliations. As shown, the team represents a multidisciplinary group ranging from planning,
enforcement, emergency response, and engineering, to local and state officials. Detailed crash history data
from the Town of Tisbury Police Department, and associated collision diagrams were reviewed prior to
an in-field visit to the intersection. Additionally, traffic volume data, including Turning Movement
Counts (TMC), was made available. These data are provided in the Appendix for reference.
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Table 1. Participating Audit Team Members
Audit Team Member
Agency/Affiliation
Bonnie Polin
MassDOT Safety
Lisa Schletzbaum
MassDOT Safety
Dan Hanavan
Tisbury Police
John Schilling
Tisbury Fire
Melina Loberg
Tisbury Selectman
Bill Veno
Martha’s Vineyard Commission
Tom Currier
MassDOT Project Management
Mark London
Martha’s Vineyard Commission
Eerik Meisner
Tisbury Police
Ben Robinson
Tisbury Planning Board
Sandra Serpa
MassDOT
Pamela Haznar
MassDOT
Jay Grande
Tisbury Town Administrator
Richard Clark
Steamship Authority
Dan Seidman
Tisbury
Priscilla Leclerc
Martha’s Vineyard Commission
Joe Johnson
Greenman-Pedersen, Inc.
Nicole Rogers
Greenman-Pedersen, Inc.
Project Location and Description
The RSA focused on the unsignalized intersection of State Road at Edgartown Vineyard Haven Road and
Look Street in the Town of Tisbury, Massachusetts located on Martha’s Vineyard, as shown in Figure 1.
This intersection is the junction of the following roadways, which are categorized according to MassDOT
functional classifications:
State Road is a two lane road that runs in an east-west direction connecting West Tisbury to the west and
Vineyard Haven to the east. To the west of Edgartown Vineyard Haven Road, State Road is functionally
classified as an ‘Urban Minor Arterial’ and to the east of Edgartown Vineyard Haven Road; it is classified
as an ‘Urban Principal Arterial’. Within the project limits, State Road is under Massachusetts Department
of Transportation (MassDOT) jurisdiction. A vertical curve is located on State Road, just west of Look
Street and Edgartown Vineyard Haven Road, creating a downgrade on the State Road eastbound approach
to its intersection with Look Street and Edgartown Vineyard Haven Road. Approximately 250 feet west
of the intersection, the speed limit decreases from 30 miles per hour (mph) to 20 mph.
Edgartown Vineyard Haven Road is a two lane road running in a north-south direction connecting State
Road (Vineyard Haven) to the north and Oak Bluffs and Edgartown to the south. It is functionally
classified as an ‘Urban Principal Arterial’ and under local (Town of Tisbury) jurisdiction. The speed limit
on Edgartown Vineyard Haven Road is posted at 30 miles per hour (mph).
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Look Street is a two lane road running in a north-south direction, connecting State Road to the south and
Center Street in the north. It is functionally classified as a Local Road under local (Town of Tisbury)
jurisdiction. There is no posted speed limit on Look Street.
The intersection included in the audit is discussed in detail below.
State Road at Edgartown Vineyard Haven Road/Look Street
State Road at Edgartown Vineyard Haven Road/ Look Street is an offset, unsignalized 4-way intersection.
The State Road eastbound and westbound approaches each provide a single general purpose travel lane
operating under free-flowing conditions. Directional travel along State Road is separated by a doubleyellow centerline with 12 foot travel lanes and 1 foot shoulders on both sides of the roadway. Edgartown
Vineyard Haven Road, the southeastern leg of the intersection, runs in a north-south direction and is
under STOP-sign control. Directional travel is separated by a double-yellow centerline and 1 foot
shoulders are present on both sides of the roadway. The Edgartown Vineyard Haven Road northbound
approach consists of a 12 foot left turn lane and a 12 foot right turn lane. Those wishing to proceed onto
Look Street must use the dedicated left turn lane to turn left onto State Road and then take an immediate
right onto Look Street. Look Street, the northwestern leg of the intersection, is separated by a single
yellow centerline with 10 foot general purpose travel lanes in each direction and no striped shoulders. It
also runs in a north-south direction and is under STOP-sign control.
There is a crosswalk provided across Look Street that is extremely faded. Another crosswalk, in good
condition, is provided across State Road approximately 30 feet to the west of where Look Street intersects
with State Road. It should be noted that there is no crosswalk on State Road east of the intersection even
though there are sidewalks leading up to this point. Although a crosswalk at this location may interfere
too much with vehicular traffic flow between State Road and Edgartown Vineyard Haven Road, it does
pose a safety concern as some pedestrians now have to cross three roads rather than just one. Sidewalks
are present along both sides of State Road west of the intersection and only on the northern side of the
roadway, east of the intersection. The concrete sidewalks along State Road are approximately 5 feet in
width and are in good condition. Sidewalks are present along both sides of Edgartown Vineyard Haven
Road. The concrete sidewalks along Edgartown Vineyard Haven Road vary from 3 to 5 feet and are in
fair condition. Sidewalks are available along the western side of Look Street and are in good condition.
Currently, pedestrian ramps located on both sides of Look Street, the western side of Edgartown Haven
Road, and both ramps for the crosswalk on State Road appear to meet both MassDOT and ADA
Standards. However, it should be noted that there is a utility pole within the sidewalk which may make it
difficult for wheelchair maneuverability. All five of the previously mentioned pedestrian ramps are
equipped with detectable warning panels for those visually impaired. The ramp on the eastern side of
Edgartown Vineyard Haven Road, however, is not ADA compliant and is not equipped with detectable
warning panels. There are no bicycle accommodations currently provided at this intersection.
Land use within the study area consists mostly of residential homes. However, there are inns located both
on Look Street and Edgartown Vineyard Haven Road. Tisbury Elementary School, located less than a
quarter mile north of the intersection on West William Street (located off of Look Street) generates most
of the pedestrian activity at the intersection. The study intersection is also located about a half mile west
of the Steamship Authority which provides year-long ferry service to and from the island. For many
people traveling to West Tisbury, Chilmark, and Aquinnah, State Road is a primary route.
Figure 2 presents an aerial view of the intersection.
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Crash Analysis
Crash data were provided by the Tisbury Police Department for the most recent complete three-year
period (2009-2011) available. A total of 11 collisions were reported at the intersection according to the
police crash records. Of these 11 crashes, 5 were rear end collisions, 4 were angle collisions, and 2 were
sideswipe crashes. Of the five rear-end collisions, 3 were on the westbound approach of State Road, 2
were along the eastbound approach of State Road and 1 occurred along the northbound approach of
Edgartown Vineyard Haven Road. All four angle collisions involved an eastbound vehicle on State Road;
three colliding with exiting northbound vehicles from Edgartown Vineyard Haven Road and the last
colliding with an exiting southbound vehicle from Look Street. Of the total 11 crashes reported, 10
crashes (approximately 90 percent) had reported severity of being limited to property damage, with the
one remaining crash resulting in injury. No fatalities were reported within the Tisbury Police Department
records. Eight out of the 11 reported crashes occurred during the summer months (June- September). A
majority (7 out of 11) of the crashes occurred during the evening peak. Out of the eleven collisions, 2
involved mopeds with tourists and 5 involved island residents only. Of the remaining four, all of which
involved non-islanders, residents were at fault for two of them.
In addition to the collision summary, crash occurrence also is compared to the volume of traffic through a
particular intersection. Accordingly, the crash rate is compared to the district-wide average crash rate for
a signalized intersection. An intersection crash rate is a measure of the frequency of collisions compared
to the volume of traffic through an intersection and is presented in crashes per million entering vehicles
(c/mev). For unsignalized intersections, the statewide average is 0.60 c/mev and the district-wide
(MassDOT District 5) average is 0.58 c/mev. A comparison of the calculated crash rate to this average
rate can be used to establish the significance of collision occurrence. The calculated crash rate for State
Road at Look Street/ Edgartown Vineyard Haven Road is 0.61 c/mev, which is above both the statewide
and district-wide averages. This rate was determined based on the 11 reported crashes at the unsignalized
intersection, over the course of three years, utilizing counts from September 30, 2014. Crash data
summaries, a collision diagram and a crash rate worksheet are included in the Appendix of this report.
Traffic Counts
Manual Turning Movement Counts (TMC) were conducted at the intersection in September 2014 to
portray an average month condition. The data show that the morning peak hour occurred from 7:30 AM to
8:30 AM, with the afternoon peak hour from 4:15 PM to 5:15 PM. Complete TMC data are included in
the Appendix.
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Figure 1.
Locus Map
RSA Study Intersection
Source: Google Maps
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Figure 2.
State Road at Look Street/ Edgartown Vineyard Haven Road
Source: Google Earth
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Audit Observations
Following an introduction to the RSA process and a summary of existing geometry, intersection
operations, and crash and speed data, the audit participants were asked to discuss safety concerns at the
subject intersection. Audit team members then walked to the intersection as a team, at which time
observations were offered in the field. A summary of the safety observations and potential deficiencies is
provided below:
State Road at Look Street/Edgartown Vineyard Haven Road
Intersection Geometry
The intersection of State Road at Look Street/Edgartown Vineyard Haven Road is an offset four way
intersection which makes it difficult for drivers on Edgartown Vineyard Haven Road to continue onto
Look Street or vice versa. In both cases, vehicles trying to execute this “S” turn maneuver must make a
left turn onto State Road and then an immediate right onto their destination roads. Since both Look Street
and Edgartown Vineyard Haven Road are under STOP-sign control and heavy volumes are experienced
on State Road especially during the summer months, adequate gaps are rare and significant queueing
occurs on both roads (although queues on Edgartown Vineyard Haven Road are considerably longer).
There is a theory that traffic queues at this location are now
exacerbated by the roundabout at Barnes Road, located near the
airport. This used to be a four way STOP which would create
some gaps in traffic, but the roundabout now provides a
continuous flow of traffic. Although this is not proven, it could be
a reason as to why backups escalate on the Edgartown Vineyard
Haven Road and as a result, drivers accept less, riskier gaps. The
lack of safe gaps in traffic on State Road results in frustration of
drivers on the sidelines and therefore, aggressive left turns onto
State Road are common. It is normal to see mainline motorists on
State Road stop and yield to the cross traffic in order to relieve
queues on the sidelines. However, this courtesy often increases
backups on State Road and is also a safety hazard for people
using the intersection. For example, a vehicle turning left onto
State Road westbound from Edgartown Vineyard Haven Road
may do so aggressively and then experience a halt in traffic
because a westbound vehicle on State Road is stopped to let
Operations at the intersection are
traffic on Look Street proceed. This unexpected stop in traffic
confusing and at times chaotic.
may result in angle and rear-end crashes seen at this intersection,
especially since this intersection is often traveled by tourists who are unfamiliar with the common
tendencies at this location.
Referring to the crash data summary and the collision diagram within the Appendix of this RSA, crashes
2, 8 and 9 may be related to this behavior. In crash number 2, vehicle 1 traveling eastbound was stopped
for traffic at Edgartown Vineyard Haven Road when the vehicle 2 turned left onto State Road from Look
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Street and collided with the left rear of vehicle 1. This may have been because vehicle 2 accepted an
insufficient gap in traffic for the left turn but was not anticipating vehicle 1 to be stopped on the mainline
at Edgartown Vineyard Haven Road. In crash number 8, both vehicle 1 and 2 were traveling westbound
on State Road when vehicle 1 stopped for traffic and vehicle 2 collided into the rear of vehicle 1. It was
stated that the driver of vehicle 2 was distracted but if the intersection was working as designed (State
Road running under free flowing conditions) this collision may not have occurred. Crash 9 is a perfect
example of the ‘courtesy’ crash in which vehicle 1 was eastbound on State Road and stopped at
Edgartown Vineyard Haven Road to allow vehicle 2 to make a left onto State Road. When it seemed as
though vehicle 2 was not going to move forward, vehicle 1 began to accelerate as did vehicle 2 and the
two collided.
It should be noted that the existing geometry results in tight radii and narrow roadways, especially on
Look Street. Drivers familiar with the area frequently allow Look Street traffic to exit before trying to
turn in. It is also common to see Look Street traffic to stop further back from the STOP bar to allow
traffic to turn onto Look Street. Simultaneous two way navigation into and out of Look Street is very
difficult.
Sight Distance
Vehicles exiting Look Street onto State Road struggle with poor
intersection sight distance due to the retaining walls located in
both the northwest and northeast corners of the intersection, as
well as an adjacent overgrown vegetation west of Look Street.
There is also a utility pole located in the northwest corner of the
intersection that may be contributing to poor sight lines to the
west of the intersection. Referring to the crash data summary and
the collision diagram within the Appendix of this RSA, crash 11
may be related to this issue. The crash data summary states that
crash number 11 occurred when vehicle 1 was making a left turn
from Look Street onto State Road when it struck vehicle 2 who
was traveling eastbound on State Road. The driver of vehicle 1
claimed that he/she did not notice vehicle 2. Sight distance is also
of concern at this location because of the close proximity of the
crosswalk on State Road which is offset west of the intersection.
Vehicles in queue on Look Street are unable to see pedestrians
waiting to cross or within the crosswalk.
When vehicles are in both lanes on Edgartown Vineyard Haven
Road, sight distances to the west can be blocked by the leftturning vehicle, especially if it is a large vehicle.
The retaining wall and utility pole
shown here block sightlines for
drivers exiting Look Street.
Speeding
While speed limits are posted along both approaches on State Road, it was noted by the Tisbury Police
Department, as well as other members of the audit team, that many vehicles travel along State Road well
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
in excess of the posted speed limit of 20 mph in the vicinity of this intersection. Speed Regulation 683,
included in the Appendix, shows that the speed limit on State Road changes from 30 mph to 20 mph just
250 feet west of the intersection. Therefore it may be very difficult to enforce speeding on the westbound
approach to the intersection as there is very little room for police to stop a vehicle within 250 feet of the
intersection. It should be noted that if a speed study were to be conducted, the 85 th percentile of speeds
would be higher than 20 mph and result in a faster speed limit at this location. There is a slight vertical
curve on State Road which creates a downhill grade for the eastbound approach. When combined with
sight distance limitations and heavy opposing volumes, these high travel speeds make it more difficult for
vehicles on the stop-controlled Look Street southbound and Edgartown Vineyard Haven Road
northbound to determine an adequate gap in State Road traffic. Similarly, motorists traveling a prevailing
speed on State Road eastbound may have difficulty perceiving and reacting to motorists entering the
intersection from Look Street or Edgartown Vineyard Haven Road. The posted speed limit on State Road
eastbound decreases from 30 mph to 20 mph within a relatively short distance before the intersection
(approximately 250 feet) and may not provide motorists with adequate warning that they need to reduce
speed before approaching the intersection. Excessive speeds contribute to crashes of all types, and
increase the severity of those crashes. Referring to the crash data summary and the collision diagram
within the Appendix of this RSA, crash 3 is contributed to driving too fast for conditions as an eastbound
motorcyclist lost control due to excessive speed.
Signage
It is known that Martha’s Vineyard attracts a large amount of
tourists year long, especially in the summer months. It is common
that some tourists traveling to Edgartown, Oak Bluffs, West
Tisbury, Chilmark, and Aquinnah will get off the ferry at the
Vineyard Haven Port. Some will then proceed to Water Street, turn
right onto Beach Street, and continue onto State Road until they
reach the Look Street / Edgartown Vineyard Haven Road
intersection at which point travelers will turn left onto Edgartown
Vineyard Haven Road to reach Edgartown and Oak Bluffs or
continue straight onto State Road to reach West Tisbury, Chilmark,
and Aquinnah. Currently, there are large directional signs present
that direct travelers in the way of different towns on the Vineyard.
Most tourists (probably following a map or GPS directions) are
looking for street name signs. There is no street name sign for
Edgartown Vineyard Haven Road and the street name sign for
Look Street is not MUTCD compliant and it is very difficult to see
from both approaches on State Road. Motorists that are unsure of
Existing directional signage located
the upcoming intersection side-streets along State Road may
at the intersection.
approach the intersection and stop abruptly upon realization that
they have reached their turn, causing rear-end or even sideswipe crashes.
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Approximately 200 feet in advance of the intersection on both the
eastbound and westbound approaches are intersection ahead
warning signs (W2-1). These signs do not correctly portray the
intersection as an offset four way but rather as a typical
perpendicular four way intersection, which may be confusing to
unfamiliar drivers.
The STOP-sign on Edgartown Vineyard Haven Road is on the right
side of the roadway and may be difficult to see for vehicles in the
left turn lane especially if there is a large vehicle in the right lane.
The post for the STOP-sign on Edgartown Vineyard Haven Road is
slightly slanted which may make it difficult to see. Since mainline
drivers on State Road stop to let traffic on Edgartown Vineyard
Haven Road go frequently, it is a common practice that drivers on
Edgartown Vineyard Haven Road will disregard the STOP-sign
completely and go through the intersection while they have an
opportunity. Referring to the crash data summary and the collision
diagram within the Appendix of this RSA, crashes 1 and 10
Existing intersection ahead
occurred because vehicles traveling northbound on Edgartown
warning sign on westbound
approach
Vineyard Haven Road failed to stop at the stop sign and collided
(W2-1).
with eastbound vehicles on State
Road. It is also possible that their
vision of the sign may be blocked or it may just be difficult to see.
The STOP-sign on Look Street is defaced and has stickers on it.
Pavement Conditions
Moderate rutting was noted along Edgartown Vineyard Haven Road
near the vicinity of the stop bar at the time of the audit. Pavement
rutting can promote rear-end crashes as asphalt bleeding usually
occurs around the ruts. Additionally the ruts can collect standing
water.
Pavement Markings
Moderate rutting on
Markings along State Road were observed to be visible, clear, and
Edgartown Vineyard Haven
reflective at the time of the audit. Markings along Edgartown
Road.
Vineyard Haven Road were also observed to be visible, clear, and reflective at the time of the audit;
however there was some fading of markings towards the stop bar, especially the double yellow centerline.
It was noted in the field that left turning vehicles on Edgartown Vineyard Haven Road tend to hug the
centerline and in many cases were crossing the double yellow just before executing the left turn
maneuver. Markings along Look Street were fading considerably, especially the stop bar and the
crosswalk at this approach.
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Excessive Queuing
Edgartown Vineyard Haven Road is under STOP-sign control and State Road experiences heavy volumes
during the peak periods especially during the summer months. Therefore, adequate gaps are rare and
significant queueing occurs on Edgartown Vineyard Haven Road. The lack of safe gaps in traffic on State
Road increases the potential for aggressive and distracted driving. This issue could have contributed to the
rear-end type crash to occur on Edgartown Vineyard Haven Road, as well as the angle crash to occur
from a left turning vehicle failing to yield the right of way, referred to as crashes 7 and 10 respectively in
the crash data summary and collision diagram within the Appendix of this RSA. As previously
mentioned, mainline drivers on State Road often stop to help relieve the queues on Edgartown Vineyard
Haven Road. At this time, drivers on Edgartown Vineyard Haven Road completely disregard the STOPsign and proceed through the intersection as long as the mainline driver continues to yield.
Bicycle Accommodations
There are currently no bicycle accommodations along all approaches to the intersection, nor at the
intersection itself.
Pedestrian Accommodations
West of the intersection, sidewalks are provided along both
sides of State Road. A recent project completed by MassDOT
installed new sidewalks which remain in good condition at the
time of the audit. East of the intersection sidewalks are provided
only along the north side of State Road. Sidewalks are provided
along both sides of Edgartown Vineyard Haven Road. However,
they appeared to be very narrow and in fair condition at the time
of the audit. There is a sidewalk provided along the west side of
Look Street that appeared to be in good condition at the time of
the audit.
A crosswalk is located along the Look Street approach but it is
significantly worn and almost impossible to see. An additional
crosswalk is located on State Road approximately 30 feet west
of the intersection with Look Street. The Tisbury Elementary
School is located approximately a quarter mile northwest of the
intersection on West William Street and this crosswalk is
frequently used by those students walking to school. This
crosswalk used to be located directly at the intersection but was
relocated as part of a MassDOT project due to the constraints
posed by the utility pole in the northwest corner of the intersection.
Look Street Crosswalk- Faded
pavement markings.
Although the new location takes pedestrians out of the confusing turning vehicle movements occurring at
the intersection, it also puts them outside of the driver’s eye due to poor sight lines on Look Street.
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Although there is a fairly low volume of vehicles executing a right turn from Look Street to State Road,
drivers in this position have very limited site to the crosswalk due to the existing retaining wall and the
overgrown vegetation. The Town indicated that there is typically a crossing guard located at the State
Street crosswalk in order to assist children during the start and end of the school day.
There is no crosswalk along Edgartown Vineyard Haven Road, or across State Road east of the
intersection. Audit team members suggested that these are both locations where a crosswalk is in demand.
Truck Traffic
It was noted that trucks and larger vehicles traveling eastbound on State Road have a difficult time
executing a right turn onto Edgartown Vineyard Haven Road due to existing geometry. The radius
currently provided does not give trucks ample room to safely execute the maneuver. Most times, trucks
swing wide and encroach on the northbound left turn lane. It was noted in the field several times that
vehicles traveling in that northbound left turn lane will stop a considerable amount of distance away from
the stop bar so that a truck can make the turn without having to back up within the intersection. This
unexpected stop may cause rear-end collisions along this approach.
Potential Safety Enhancements
After the intersection in-field visit, audit participants returned to the Tisbury Police Department to discuss
the safety issues and consider potential short-term and long-term improvements. Many of the potential
enhancements identified during the RSA have already been considered as part of numerous studies
undertaken in the past. A summary of potential safety-related enhancements discussed at the RSA is
provided below:
State Road at Look Street/ Edgartown Vineyard Haven Road
Offset Geometry
1.
Evaluate the appropriateness of temporarily making Look Street one-way northbound, to reduce the
amount of vehicles entering the intersection and help reduce driver confusion. The Town could
implement this on a trial basis to see if positive results are yielding. This will eliminate an approach and
reduce the number of conflict points at the intersection. This will also eliminate the need to improve sight
lines for Look Street drivers. It was noted that people use Look Street to get to the nearby elementary
school and other destinations in order to avoid heavily travelled roadways. Therefore, the Town must
consider the safety and operational trade-offs between making Look Street one-way northbound and the
potential shift of traffic volumes and safety implications at other adjacent intersections as a result of this
change.
2.
Consider making Look Street a dead end by completely closing off the street at State Road. This
will mean that vehicles will have to continue on State Road and make the right turn onto Pine Tree Road.
This will completely eliminate Look Street as a conflict point and reduce the amount of mainline traffic
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Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
unexpectedly stopping to let Look Street traffic go, which has been known to cause rear-end collisions at
the intersection. This will also eliminate the potential for an angle crash which may occur due to the
dangerous “S” turn executed by drivers wishing to continue from Edgartown Vineyard Haven Road to
Look Street or vice versa. It should be noted, however, that Look Street provides one of the few access
and egress points for the neighborhood north of State Road and therefore well detailed routes should be
considered.
3.
Should the Town decided to make long-term reconstructive efforts in the future, consideration
should be made to installing a modern roundabout or full signal at the intersection to provide a safe,
controlled movement through the intersection. A full signal, although not generally well received by the
local community, would improve the capacity and safety at the intersection by providing clear, safe gaps
for sideline traffic to flow as well as eliminate the need for mainline drivers to unexpectedly stop to let
sideline queues empty. A roundabout would eliminate the need for left turns through the intersection and
therefore may potentially decrease the amount of angle collisions seen at the intersection. A roundabout
would also calm vehicular travel speeds on a continual basis. A roundabout would require significant
land takings and easements as well as acceptance from the local community. In the short term, the Town
should consider police control to improve traffic flow.
Sight Distance
1.
Work with the owner of the property on the northwest corner of the intersection to relocate the
retaining wall and the tree line to improve sightlines to the west of the intersection. Once an adequate tree
line is obtained, maintain that tree line throughout the year. These improvements will eliminate the
potential for an angle collision caused by lack of visibility for left turning vehicles on Look Street to see
approaching eastbound vehicles on State Road. It is likely that the stone retaining walls may be
considered historic at this location.
2.
Evaluate the feasibility and appropriateness of relocating the utility pole located in the northwest
corner of the intersection to improve sight lines west of the intersection. The relocation of this utility pole
will allow Look Street drivers approaching the intersection to potentially have better vision of pedestrians
waiting the crosswalk or in the crosswalk and therefore reduce the possibility of a collision with a
pedestrian.
Speeding
1.
Consider re-evaluating the speed limit for the westbound approach of State Road. In the
meantime, MassDOT could install the W3-5 Reduced Speed Limit Ahead sign west of the intersection in
advance of the 20 mph speed limit sign, since State Road is under MassDOT jurisdiction. This will alert
to motorists that the speed limit will drop and perhaps give more time for vehicles to start slowing down
prior to the intersection. A speed trailer could also be installed to visually display drivers’ real-time
speeds compared to the speed limit. A speed trailer could potentially reduce speeds and increase
awareness of the local speed limits.
2.
Consider a perceived narrowing of the roadway by installing white edge lines west of the
intersection for eastbound drivers. A narrower travel lane provides a constricted feeling which typically
Page 13
Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
leads to reduced travel speeds and therefore a potential reduction in the number and severity of crashes
caused by excessive speeds.
3.
Consider installing other traffic calming measures west of the intersection to slow down drivers well
in advance of the intersection. This may include some type of change to the roadway geometry which
would provide a horizontal deflection in which drivers are forced to slow down to negotiate the slight
change in the roadway conditions. Providing a traffic calming measure further from the intersection will
reduce speeds in advance of the intersection and provide motorists traveling eastbound on State Road
more time to react to entering vehicles from Look Street and Edgartown Vineyard Haven Road.
4.
Consider installing a modern roundabout at the intersection as part of long-term reconstruction
efforts, as previously mentioned, to calm traffic, eliminate the occurrence of angle crashes and reduce
crash severity.
Signage
1. Install street name sign for Edgartown Vineyard Haven Road that is clear and easy to see. This
measure may potentially reduce rear-end or possibly sideswipe collisions caused by drivers unsure of
where they need to go.
2. Evaluate the placement and size of the existing street name at Look Street to improve visibility.
3. Replace the existing intersection warning signs (W2-1) on State Road with a W2-7L on the
westbound approach and a W2-7R on the eastbound approach in order to better depict the intersection as
a skewed four way intersection.
4. Place street name plaques (W16-8aP) below the intersection warning signs on State Road to increase
clarity and awareness of the intersection. This will provide drivers with direction prior to the intersection
and therefore reduce confusion and last minute maneuvers at the intersection.
5. Replace STOP-sign and post on Edgartown Vineyard Haven Road and position so that it is standing
upright and is visible to both lanes of traffic. Consider making this STOP sign larger (48” x 48”) to
increases visibility. Consider adding BlinkerSign LED signs which are FHWA-MUTCD compliant and
provide high-visibility advance warning of potentially dangerous traffic conflicts. By making the STOPsign on Edgartown Vineyard Haven Road more visible, perhaps more drivers will adhere to control put in
place and reduce the number of angle type collisions. Consideration should be made to install an
additional STOP sign on the western side of Edgartown Vineyard Haven Road as well so that left turning
vehicles may have a better view. Advance Stop warning signs should be installed on the northbound
approach of Edgartown Vineyard Haven Road to provide additional warning of the upcoming STOP
control condition.
6. Remove the stickers on Look Street STOP-sign to improve visibility or replace with new sign.
Pavement Conditions
Page 14
Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
1.
Rehabilitate pavement to remove rutting along the Edgartown Vineyard Haven approach. This
improvement may decrease the potential number of rear-end crashes in wet or icy roadway conditions.
Pavement Markings
1.
Refresh pavement markings especially along Look Street and Edgartown Vineyard Haven Road.
New pavement markings will increase visibility and assist in the reduction of nighttime and sideswipe
crashes. A new enhanced double yellow centerline along Edgartown Vineyard Haven Road may
discourage drivers in the left turn lane from crossing over double yellow centerline. Although not
common, consider the possibility of installing center line rumble strips (or flexible delineator posts) along
Edgartown Vineyard Haven Road to keep vehicles in appropriate lanes. Vehicles commonly cross the
double yellow centerline due to the skewed geometry to the intersection. Edgartown Vineyard Haven
Road does not approach State Road at a 90 degree angle but rather at an odd angle. Left turning vehicles
on Edgartown Vineyard Haven Road may frequently cross the double yellow centerline to position
themselves more at a right angle to execute an easier maneuver.
Excessive Queueing
1.
Consider a bypass route that redirects traffic on Edgartown Vineyard Haven Road downstream and
away from the intersection. A bypass route will lower the volumes on this section of Edgartown Vineyard
Haven Road and therefore decrease the amount of left turns executed at this intersection. This suggestion
is in conjunction with the existing “Tisbury Connector Roads” proposal which was designed to reduce
traffic on the left turns from Edgartown Vineyard Haven Road, right turns from State Road, and through
traffic between Look Street and Edgartown Vineyard Haven Road.
2.
Consider police detail at this intersection. Although not well received by the local community,
police detail, especially during summer months, can increase safety for all modes of traffic at the
intersection.
3.
Should the Town wish to make long term reconstructive efforts in the future, they may want to
consider installing a modern roundabout or full signal at the intersection to provide a safe, controlled
movement through the intersection and to reduce the occurrence of angle crashes. This would require
significant land takings and easement as well as acceptance from the local community.
4.
Should the Town wish to make long term planning efforts in the future, consideration should be
made to reduce cut-through traffic at this intersection by implementing traffic improvements network
wide.
Bike Accommodations
1.
This intersection experiences a considerable amount of bicycle activity, especially during the
warmer months and therefore enhanced bicycle accommodations should be considered at this location.
These accommodations could include bicycle lane pavement markings or sharrows, and associated
signage. Sharrows and associated signage alert vehicles that bicyclists are likely to be within the traveled
Page 15
Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
way as well. The sharrows will also assist bicyclists with a safe lateral positioning in lanes that are too
narrow to accommodate both a motor vehicle and a bicycle to travel side by side in the same traffic lane.
Pedestrian Accommodations
1.
Consider relocating the crosswalk on State Road west of the intersection or relocate the retaining
wall and relocate the utility pole, both in the northwest corner, to provide better sight lines for Look Street
drivers and pedestrians waiting to cross from the north side of State Road.
2.
Consider installing rectangular rapid-flashing beacons for pedestrians at the crosswalk on State
Road to further increase visibility and also act as a traffic calming measure for eastbound vehicles on
State Road to reduce their speed in advance to the intersection. The U.S. Department of Transportation in
conjunction with the Federal Highway Administration released an Interim Approval for Optional Use of
Rectangular Rapid Flashing Beacons in which it states that a RRFB may be placed for crosswalks across
approaches not controlled by YIELD signs, STOP signs, or traffic control. It should be used to
supplement a W11-2 Pedestrian crossing sign with diagonal downward arrow plaque, located at or
immediately adjacent to a marked crosswalk. Therefore, a RRFB could be placed at this crossing location.
3.
Refresh crosswalk markings on Look Street to enhance visibility.
4.
Consider providing crosswalks along Edgartown Vineyard Haven Road and across State Road east
of the intersection. Demand is high at these locations according to audit team members. Special
consideration as to their location should be made so that pedestrians feel comfortable and safe. The
installation of these crosswalks would also require sidewalks, sidewalk ramps, and signage to adhere to
MassDOT and ADA Compliance. The locations will require that adequate sight distance is available.
5.
Consider implementing high-visibility crosswalk treatments which have been known to significantly
increase both driver daytime yielding behavior and the percentage of pedestrians actually using the
crosswalk.
6.
Should the Town consider long term reconstructive efforts, consider providing suitable sidewalks
with ample width along both sides of all approaches for added pedestrian comfort and safety.
Truck Traffic
1.
As part of long-term reconstructive efforts, consider providing a larger turning radius at the
southwest corner of the intersection. This will require land takings and easements but would provide
ample room for trucks and heavy vehicles to safely execute the right run onto Edgartown Vineyard Haven
Road from the west. This will reduce the potential of a head-on or angle type collision between an
eastbound large turning vehicle turning right and a northbound approaching vehicle on Edgartown
Vineyard Haven Road.
Page 16
Road Safety Audit—State Road at Look Steet/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Summary of Road Safety Audit
Based on observations and discussions, the RSA team identified the issues and possible enhancements
that could improve safety at the intersection of State Road at Look Street/ Edgartown Vineyard Haven
Road in Tisbury, Massachusetts. Many of the enhancements identified will be studied to determine
feasibility as part of the design process for a future intersection improvement project.
Table 2 summarizes the existing safety issues, possible enhancements, estimated safety payoff, time
frame, cost, and responsible agency for the intersection of State Road at Look Street and Edgartown
Vineyard Haven Road. Safety payoff estimates are subjective and based on engineering judgment and are
categorized as low, medium, and high. The time frame is categorized as short-term (<1 year), mid-term (1
to 3 years), or long-term (>3 years). The costs are categorized as low (<$10,000), medium ($10,001 to
$50,000), or high (>$50,001).
Page 17
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Table 2. Potential Safety Enhancement Summary – State Road at Look Street/ Edgartown
Vineyard Haven Road
Safety Issue
Potential Safety Enhancement
Safety
Payoff
Time
Frame
Cost
Responsible
Agency
Offset Geometry
Evaluate the appropriateness of temporarily making Look
Street one-way northbound to reduce the amount of vehicles Medium
entering the intersection and help reduce driver confusion
Medium
Low
MassDOT/
Tisbury
Offset Geometry
Consider making Look Street a dead end by completely
closing off the street at State Road.
High
Medium
Medium
MassDOT/
Tisbury
Offset Geometry
Consider installing a modern roundabout or full signal at the
intersection to provide a safe, controlled movement through
the intersection and to reduce the occurrence of angle
crashes.
High
Long
High
MassDOT
Sight Distance
Work with the owner of the property on the northwest corner
of the intersection to relocate the retaining wall to improve
sightlines to the west of the intersection.
High
Medium
High
MassDOT/
Tisbury
Sight Distance
Work with the owner of the property on the northwest corner
of the intersection to cut back the tree line to improve sight
lines west of the intersection. Continue to maintain that cut
back line.
High
Short
Low
MassDOT/
Tisbury
Sight Distance
Evaluate the feasibility and appropriateness of relocating the
utility pole located in the northwest corner of the intersection
to improve sight lines west of the intersection.
High
Long
High
MassDOT/
Tisbury
Speeding
Consider re-evaluating the speed limit for the westbound
approach of State Road. In the meantime, MassDOT could
install the W3-5 Reduced Speed Limit Ahead sign west of
the intersection in advance of the 20 mph speed limit sign.
This will alert to motorists that the speed limit will drop and
perhaps give more time for vehicles to start slowing down
prior to the intersection. A speed trailer could also be
installed.
High
Short
Low
MassDOT
Page 18
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Table 2. Potential Safety Enhancement Summary – State Road at Look Street/ Edgartown
Vineyard Haven Road
Safety Issue
Potential Safety Enhancement
Safety
Payoff
Time
Frame
Cost
Responsible
Agency
Speeding
Consider narrowing the roadway using white edge lines west
of the intersection for eastbound drivers. A narrower road
Medium
will provide a constricted feeling which will reduce driver
speed.
Medium
Low
MassDOT
Speeding
Consider installing a geometric traffic calming measure west
of the intersection to start slowing down drivers well in
advance of the intersection.
Medium
Long
High
MassDOT
Speeding
Consider installing a modern roundabout at the intersection
as part of long-term reconstruction efforts, as previously
mentioned, to calm traffic and eliminate the occurrence of
angle crashes.
High
Long
High
MassDOT
Signage
Consider the installation of W3-5 Reduced Speed Limit
Ahead sign on eastbound approach of State Road.
Medium
Short
Low
MassDOT
Signage
Install street name sign for Edgartown Vineyard Haven Road
Medium
that is clear and easy to see.
Short
Low
MassDOT
Signage
Evaluate the placement and size of the existing street name
at Look Street to improve visibility.
Medium
Short
Low
MassDOT
Signage
Replace the existing intersection warning signs (W2-1) on
State Road with a W2-7L on the westbound approach and a
W2-7R on the eastbound approach in order to better depict
the intersection as a skewed four way intersection.
Medium
Short
Low
MassDOT
Signage
Place street name plaques (W16-8aP) below the
intersection warning signs on State Road to increase clarity
and awareness of the intersection.
Medium
Short
Low
MassDOT
Signage
Replace STOP-sign and post on Edgartown Vineyard Haven
Road and position so that it is standing upright and is visible
to both lanes of traffic. Consider making this STOP sign
larger to increases visibility. Consider adding BlinkerSign
Medium
LED signs which are FHWA-MUTCD compliant and provide
high-visibility advance warning of potentially dangerous
traffic conflicts.
Short
Medium
MassDOT
Page 19
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Table 2. Potential Safety Enhancement Summary – State Road at Look Street/ Edgartown
Vineyard Haven Road
Time
Frame
Cost
Responsible
Agency
Signage
Consideration should be made to install an additional STOP
sign on the western side of Edgartown Vineyard Haven
Road as well so that left turning vehicles may have a better
view. Advance Stop warning signs should be installed on the Medium
northbound approach of Edgartown Vineyard Haven Road
to provide additional warning of the upcoming STOP control
condition.
Short
Low
MassDOT
Signage
Remove the stickers on Look Street STOP-sign.
Medium
Short
Low
Tisbury
High
Long
High
MassDOT
Pavement Markings
Refresh pavement markings especially along Look Street
and Edgartown Vineyard Haven Road. Consider the
possibility of installing center line rumble strips or flexible
delineator posts along Edgartown Vineyard Haven Road to
keep vehicles in appropriate lanes.
High
Short
Low
MassDOT
Excessive Queuing
Consider a bypass route that redirects traffic on Edgartown
Vineyard Haven Road downstream and away from the
intersection.
High
Long
High
MassDOT/
Tisbury
Excessive Queuing
Consider police detail at this intersection.
Medium
Short
Low
Tisbury Police
Excessive Queuing
Consider installing a modern roundabout or full signal at the
intersection to provide a safe, controlled movement through
the intersection and to reduce the occurrence of angle
crashes.
High
Long
High
MassDOT
Excessive Queuing
As part of long term planning efforts, work to reduce cutthrough traffic at this intersection by implementing traffic
improvement network wide.
High
Long
Medium
Tisbury
Safety Issue
Potential Safety Enhancement
Rehabilitate pavement to remove rutting along the
Edgartown Vinetyard Haven approach. This improvmeent
Pavement Conditions
may decrease the potential number of rear-end crashes in
wet or icy roadway conditions.
Safety
Payoff
Page 20
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Table 2. Potential Safety Enhancement Summary – State Road at Look Street/ Edgartown
Vineyard Haven Road
Safety
Payoff
Time
Frame
Cost
Responsible
Agency
Bike
Accommodations
This intersection experiences a considerable amount of
bicycle activity, espcially during the warmer months and
therefore enhanced bicycle accommodations should be
considered at this location. These accommodations could
include bicycle lane pavement markings or sharrows, and
associated signage.
High
Medium
Medium
MassDOT
Pedestrian
Accommodations
Consider relocating the crosswalk on State Road west of the
intersection or relocate the retaining wall and relocate the
utility pole, both in the northwest corner, to provide better
sight lines for Look Street drivers and pedestrians waiting to
cross from the north side of State Road.
High
Medium
Medium
MassDOT
Pedestrian
Accommodations
Consider installing rectangular rapid-flashing beacons for
pedestrians at the crosswalk on Sate Road to further
increase visibility and also act as a traffic calming measure
for eastbound vehicles on State Road to reduce their speed
in advance to the intersection.
Medium
Medium
Medium
MassDOT
Pedestrian
Accommodations
Refresh crosswalk markings on Look Street to enhance
visibility.
Medium
Short
Low
MassDOT
Pedestrian
Accommodations
Consider providing crosswalks along Edgartown Vineyard
Haven Road and across State Road east of the intersection.
Demand is high at these locations according to audit team
members. Special consideration as to their location should
be made so that pedestrians feel comfortable and safe. The
installation of these crosswalks would also require sidewalks
and sidewalk ramps to adhere to MassDOT and ADA
Compliance.
High
Medium
High
MassDOT
Pedestrian
Accommodations
Consider implementing high-visibility crosswalk treatments
which have been known to significantly increase both driver
daytime yielding behavior and the percentage of pedestrians
actually using the crosswalk.
High
Medium
Medium
MassDOT
Safety Issue
Potential Safety Enhancement
Page 21
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Table 2. Potential Safety Enhancement Summary – State Road at Look Street/ Edgartown
Vineyard Haven Road
Safety
Payoff
Time
Frame
Cost
Responsible
Agency
As part of long-term planning and reconstructive efforts,
consider providing suitable sidewalks with ample width along
both sides of all approaches for added pedestrian comfort
and safety.
High
Long
High
MassDOT
As part of long-term reconstructive efforts, consider
providing a larger turning radius at the southwest corner of
the intersection. This will require land takings and
easements but would provide ample room for trucks and
heavy vehicles to safely execute the right run onto
Edgartown Vineyard Haven Road from the west.
High
Long
High
MassDOT
Safety Issue
Potential Safety Enhancement
Pedestrian
Accommodations
Truck Traffic
Page 22
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Appendix A. RSA Meeting Agenda
Road Safety Audit
Tisbury – Beach Road at Water Street/Lagoon Pond
Road/Beach Road Extension and State Road at Look
Street/Edgartown Vineyard Haven Road
Meeting Location: Tisbury Police Department
Police Training Room
32 Water Street, Vineyard Haven, MA 02568
Wednesday, December 3, 2014
9:15 AM – 12:15 PM
Type of meeting:
High Crash Location – Road Safety Audit
Attendees:
Invited Participants to Comprise a Multidisciplinary Team
Please bring:
Thoughts and Enthusiasm!!
9:15 AM
Welcome and Introductions
9:30 AM
Review of Site Specific Material
 Crash, Speed & Volume Summaries– provided in advance
 Existing Geometries and Conditions
10:15 AM
Visit the Site
 Drive to Beach Road at Water Street/Lagoon Pond Road/Beach Road Extension
and State Road at Look Street/Edgartown Vineyard Haven Road
 As a group, identify areas for improvement
11:30 AM
Post Visit Discussion / Completion of RSA
 Discuss observations and finalize findings
 Discuss potential improvements and finalize recommendations
12:15 PM
Adjourn for the Day – but the RSA has not ended
Instructions for Participants:
 Before attending the RSA on Wednesday, December 3rd, 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.
Safety Review Prompt List
The Safety Review Prompt List provides basic safety-related questions to use when evaluating a given
roadway location. The prompt list should be considered when evaluating a roadway to design improvements or conduct a Road Safety Audit. The primary purpose of the prompt list is to identify potential
road safety hazards. The list is meant to be general and should be used to prompt an evaluator as to
specific matters identified in the field that may have an adverse effect on road safety. The Safety Review
Prompt List is not a check of compliance with design standards.
This Prompt List represents the minimum that should be considered when exploring safety opportunities
and is not intended to address all aspects of safety.
A summary of the responses should be prepared to highlight potential safety improvement opportunities.
Speed
 Are posted speed limits consistent with speed regulations; are they adequate?
 Are design features consistent with the posted speed (passing opportunities, sight distance,
warning signs for horizontal and vertical curves, clearance intervals, sign placement, etc.)
 Are adequate controls in place for driver compliance with speed limits?
Multi-modal
 Have accommodations been provided for safe movement of pedestrians, bicycles, emergency
vehicles, public transportation, and commercial vehicles?
 What design features could be improved, added, or removed to enhance the safe mobility of the
various modes?
Pavement Markings
 Are there highly visible and retro reflective edge lines, center lines, and other pavement
markings?
 Do the pavement markings provide sufficient guidance to the road users? Can the placement
of the pavement markings be modified to improve guidance to road users?
Signs
 Are all signs retro reflective and visible for all roadway conditions, including placed free from
obstructions?
 Are signs located to maximize perception and reaction while minimizing intrusion in clear zones?
 Does the signage provide adequate guidance to road users for given road conditions?
 Are pavement markings and signs consistent in effectively guiding road users?
Intersection Control
 Do all signs (stop signs, lane assignments, street names, etc.) provide visible, clear,
non-conflicting messages?
 Is there clear, non-conflicting visibility of traffic control (signal heads, signs, and markings) from
all approach lanes?
 Has the potential of misrepresentation of intersection control been considered (at closely spaced
intersections or through control that is against expectation)?
 For signalized intersections, have the implications on safety been considered for the signal
phasing?
 Is there a safe means by which all modes can travel through the intersection?
Lighting
 Is lighting (from headlights and/or streetlights) adequate for specific roadway conditions and/or
use?
 If glare exists from sunlight or opposing headlights, are there countermeasures that can be
implemented to minimize potentially detrimental effects?
Obstructions
 Are there obstructions to sight lines or roadway guidance (signs, markings, etc.) that can be
removed, relocated, or minimized as part of this project?
 If obstructions or fixed objects exist but cannot be moved, can they be shielded (with guardrails,
etc.) or delineated (with reflectors) to improve road user safety? If so, what can be done?
Pavement
 Could the condition of the pavement impact mobility and safety (potholes, edge drop-offs, skid
resistance, etc)?
 What improvements can be made to minimize safety impacts?
Access Points and Traffic Generators
 Is the access control sufficient for the road’s function?
 Are site access points located to maximize safety while still providing adequate access?
 Have impacts of site developments been adequately accommodated for safe mobility of all
road users?
Parking
 Is parking clearly delineated and in conformance with signs, markings, and regulations?
 Might parking obstruct mobility/safety of pedestrians and other roadway users?
Weather Conditions
 Have accommodations been made for impacts from adverse weather condition (storage of snow,
removal of ponding, adequate drainage, signage of low salt areas, maintenance program for
snow removal, and catch basin clearing, etc.)?
Auxiliary Lanes
 Could taper locations and/or alignments contribute to safety challenges?
 Could lack of climbing lanes or passing zones cause driver frustration?
 Do acceleration/deceleration lane lengths necessitate additional signage and/or markings?
Animals
 Do animal migrations impact safety?
 Can measures be taken to reduce animal-vehicle conflicts?
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Appendix B. RSA Audit Team Contact List
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Participating Audit Team Members
Date:
December 3, 2014
Location:
Audit Team
Agency/Affiliation
Members
Tisbury Police Department, 32 Water Street
Email Address
Phone Number
Bonnie Polin
MassDOT Safety
Bonnie.polin@state.ma.us
857-368-9636
Lisa Scheltzbaum
MassDOT Safety
Lisa.schletzbaum@state.ma.us
857-368-9634
Dan Hanavan
Tisbury Police
dhanavan@tisburyma.gov
508-696-4240
John Schilling
Tisbury Fire
jschilling@tisburyma.gov
508-696-4246
Melinda Loberg
Tisbury Selectman
melindaloberg@gmail.com
508-693-9309
Bill Veno
Martha’s Vineyard Commission
veno@mvcommission.org
508-627-3453 x15
Tom Currier
MassDOT Project Management
Thomas.currier@dot.state.ma.us
857-368-9348
Mark London
Martha’s Vineyard Commission
London@mvcommission.org
508-963-3453
Eerik Meisner
Tisbury Police
emeisner@tisburyma.gov
508-696-4240
Ben Robinson
Tisbury Planning Board
phralvang@yahoo.com
508-246-0021
Sandra Serpa
MassDOT
Sandra.serpa@dot.state.ma.us
508-884-4353
Pamela Haznar
MassDOT
Pamela.haznar@state.ma.us
508-884-4239
Jay Grande
Tisbury
jgrande@tisburyma.gov
508-696-4203
Richard Clark
Steamship Authority
Caddymv@verizon.net
508-360-3686
Dan Seidman
Tisbury
dseidman@sprynet.com
508-693-0569
Priscilla Leclerc
Martha’s Vineyard Commission
leclerc@mvcommission.org
508-693-3453
Joe Johnson
Greenman-Pedersen, Inc.
jjohnson@gpinet.com
978-570-2960
Nicole Rogers
Greenman-Pedersen, Inc.
nrogers@gpinet.com
978-570-2985
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Appendix C. Detailed Crash Data
Crash Data Summary Table
State Rd - Edgartown Vineyard Haven Rd - Look St, Tisbury, MA
March, 2009 - April, 2011
Crash
Diagram
Ref #
Crash
Date
Crash Day
m/d/y
Time of Day
Manner of Collision
Type
Light Condition
Type
Weather
Condition
Type
Road Surface
Type
Driver Contributing Code
Type
1
3/8/09
Sunday
7:40 PM
Angle
Dark - lighted
roadway
2
6/18/09
Thursday
11:10 AM
Sideswipe, same direction
Daylight
Cloudy
Dry
Failed to yield right of way
3
7/22/09
Wednesday
9:52 PM
Rear-end
Daylight
Clear
Dry
Driving too fast for conditions
4
8/12/09
Wednesday
2:15 PM
Rear-end
Daylight
Clear
Dry
Followed too closely
5
8/26/09
Wednesday
4:24 PM
Angle
Daylight
Clear
Dry
Failure to keep in proper lane or running off
road
6
8/29/09
Saturday
4:35 PM
Rear-end
Daylight
Rain
Wet
Followed too closely
7
9/2/09
Wednesday
2:50 PM
Rear-end
Daylight
Cloudy
Clear
D1
Ages
D2
Dry
Disregarded traffic signs, signals, road
markings
20
35
80
44
Dry
Other improper action
UNK
30
UNK
23
45
UNK
39
UNK
28
82
Comments
D3
V2 failed to stop for the stop sign and crash on V1 which was travelling on
EB of State Rd.
V1 traveling WB stopped for traffic at Edgartown Rd. intersection , V2 turn
left on to WB of State Rd. and coillied left rear of V1.
Motorcycle V1 lost control due to the fast speed while turning right onto SB of
Edgartown Rd. and hit V2.
V1 travelling WB and stopped for the traffic, V2 was just exited from SB turn
onto the WB and stopped behind V1, V2 then try to follow the traffic flows
infront of V1 and stucked V1 in rear
V2 stopped for the stop sign on Edgartown Rd and preparing to turn left on to
WB, motorcycle V1 lost control while turning right onto SB and hit V2.
Bus vs. Car accident, both Vehicle was travelling WB, V1 stopped for the
traffic, Bus V2 was followed too close and stuck V1 in rear, only one
passengers was in the bus.
V1 stopped in the intersection trying to make a right turn onto EB, V2
stopped behind V1, V3 failed to stop behind V2 and stuck into V2 and
81 propelling into V1. No diagram.
8
9/15/09
Tuesday
5:14 PM
Rear-end
Daylight
Cloudy
Dry
Distracted
58
9
2/24/10
Wednesday
1:50 PM
Angle
Daylight
Rain
Wet
Failed to yield right of way
57 UNK
V1 and V2 both was travelling on WB on state Rd, V1 stopped for traffic, V2
driver got distracted attention by something in the car, V2 driver looked down
of the car, failed to stop and sturck V1 in rear.
V1 was on EB of State Rd, stopped on the intersection of Engartown Rd and
allow V2 exit and make left turn, but V2 driver did not pull out from the road,
then V1 start move forward, at the same time V2 start to turn and sturk the
right front of V1.
10
9/21/10
Tuesday
2:52 PM
Sideswipe, same direction
Daylight
Clear
Dry
Failed to yield right of way
58
V1 was travaling on EB of State Rd, V2 failed to yield at stop sign to the right
lane of State Rd's travel way, V2 try to turn left on to State Rd and hit V1.
11
2/24/11
Thursday
3:48 PM
Angle
Daylight
Clear
Dry
Failed to yield right of way
UNK
48
67
UNK
V1 was make a left turn from Look St. on to EB of State Rd, did not notice on
coming V2 on EB of State Rd and stuck into V2 left front. Only provided
officer report.
*Courtesy Crash - A term used to describe a crash that occurs subsequent to a non-involved mainline driver who gives the right of way, contrary to the rules of the road, to another driver.
Summary based on Crash Reports obtained from the Tisbury Police Department
Crash Data Summary Tables and Charts
State Rd - Edgartown Vineyard Haven Rd - Look St, Tisbury, MA
CRASH MONTH
27%
30%
27%
25%
18%
20%
15%
9%
10%
5%
0%
9%
0%
J
F
0%
0%
A
M
M
9%
J
J
A
S
0%
0%
0%
O
N
D
CRASH DAY OF WEEK
45%
50%
40%
30%
18%
20%
10%
0%
18%
0%
9%
9%
Saturday
Sunday
0%
Monday
Tuesday
Wednesday
Thursday
Friday
CRASH TIME OF DAY
36%
40%
27%
30%
20%
10%
0%
9% 9%
9% 9%
0% 0%
6AM8AM
8AM10AM
0% 0% 0% 0%
10AM12PM
12PM2PM
2PM4PM
4PM6PM
6PM8PM
8PM10PM
10PM12AM
12AM2AM
2AM4AM
4AM6AM
CRASH MANNER OF COLLISION
45%
50%
36%
40%
30%
18%
20%
10%
0%
0%
Single
Vehicle
Crash
0%
Rear-end
Angle
Sideswipe, Sideswipe,
same
opposite
direction
direction
State Rd Edgarton Rd Look St Crash Date Summary.xlsx
2 of 3
0%
0%
0%
Head on
Rear to
Rear
Unknown
8/28/2014
Crash Data Summary Tables and Charts
State Rd - Edgartown Vineyard Haven Rd - Look St, Tisbury, MA
CRASH LIGHT CONDITION
100%
80%
60%
40%
20%
0%
91%
Daylight
0%
0%
Dawn
Dusk
9%
Dark Lighted
Roadway
0%
0%
0%
0%
Dark Roadway
not lighted
Dark unknown
roadway
lighting
Other
Unknown
CRASH WEATHER CONDITION
27%
0%
0%
Unknown
0%
Other
0%
Blowing
sand, snow
Sleet, Hail,
Freezing
Rain
0%
Severe
Crosswinds
0%
Fog, Smog,
Smoke
0%
Snow
Rain
Cloudy
18%
Clear
60%
50%
40%
30%
20%
10%
0%
55%
CRASH ROAD SURFACE
100%
80%
60%
40%
20%
0%
82%
18%
Dry
Wet
19%
20%
0%
0%
Snow
Ice
0%
0%
Sand, mud, Water
dirt, oil, (standing,
gravel
moving)
0%
0%
0%
Slush
Other
Unknown
CRASH DRIVER AGES
19%
19%
19%
19%
15%
10%
5%
0%
6%
0%
15-20
0%
21-29
30-39
State Rd Edgarton Rd Look St Crash Date Summary.xlsx
40-49
3 of 3
50-59
60-69
70-79
80+
8/28/2014
Tisbury, MA
STATE ROAD AT LOOK STREET AND EDGARTOWN ROAD
REGION: MVCOMMISSION
TIME PERIOD ANALYZED, 2009 - APRIL 2011
SOURCE OF CRASH REPORlS, LOCAL POUCE
COLLISION DIAGRAM
DATE PREPARED, 08/01/2014
PREPARED BY, MICHELLE DENG
*NOT TO SCALE
~
Q) Q) L
~
UJ
~
o
o
~
State Rood
4,8
6
..
..
I.. .:;0
I..
1
~7
_ _.... 1
I
c
3': o
~
L
o
01
U
W
SYMBOLS
«<
• Moving Vehicle
~ Backing Vehicle
- - - - . Non-Involved Vehicle
~
~
Pedestrian
Bicycle
Animal
~
.-.
Parked Vehicle
0
Fixed Object
TYPES OF CRASH
••
II
Head on I
J
l-~
~
SEVERITY
Rear End
0
Angle
Injury
Turning Movement
Sideswipe
Out of Control
Night TIme Crash
0
Fatal
N
MAX-2010020.25 Tisbury RSA
Number of Collisions
Location
Total
Average
per Year
Crash
Ratec
Severitya
PD
PI
Collision Typeb
F
CM
Percent During
RE
HO
FO
Ped
Other
5
-
-
-
2
Commuter
Peakd
Wet/Icy
Conditions
Tisbury Police Department (2009-2011)
State Road at Look Street/Edgartown
Vineyard Haven Road
11
3.67
0.61
10
1
-
4
Source: Tisbury Police Department Records (2009-2011)
a
PD = property damage only; PI = personal injury; F = fatality.
b
CM = cross movement/angle; RE = rear end; HO = head on; FO = fixed object; Ped = pedestrian.
c
Measured in crsahes per million entering vehicles.
d
Percent of vehicle collisions that occurred during the weekday AM and weekday PM commuter peak periods.
Collision Summary (2009-2011)
27%
18%
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Appendix D. Speed Regulations
1
September 14, 1970
TOWN OF TISBURY
SPECIAL SPEED REGUALTIONS NO. 561
Highway Location
TISBURY
Authority in Control:
TOWN OF TISBURY
Name of Highway:
Vineyard Haven- Edgartown Road
In accordance with the provisions of Chapter 90, Section 18, of
the General Laws (Ter. Ed.) as amended, the following Special Speed
Regulation is
hereby Adopted
by the Board of Selectmen
of the Town of Tisbury
That following designated speed limits are established at which
motor vehicles may be operated in the areas described:
Special Speed Regulations Number 271 dated July 7, 1964, is
hereby amended by striking out the Regulations in their entireties and
inserting in place thereof the following revision.
Vineyard Haven-Edgartown Road- NORTHBOUND
Beginning at the Oak Bluffs town line,
Thence northerly on Vineyard Haven-Edgartown Road
0.45 miles at 45 miles per hour
0.76 “
“ 35 “
“
“
0.19 “
“ 30 “
“
“ ending at Main Street; the
total distance being 1.40 miles.
Vineyard Haven-Edgartown Road- SOUTHBOUND
Beginning at Main Street,
Thence southerly on Vineyard Haven-Edgartown Road
0.19 miles at 30 miles per hour
0.76 “
“ 35 “
“
“
0.45 “
“ 45 “
“
“ ending at the Oak Bluffs town
line; the total distance being 1.40 miles.
Operation of a motor vehicle at a rate of speed in excess of
these limits shall be prima facie evidence that such speed is greater
than is reasonable and proper.
The provisions of this regulation shall not, however, abrogate in
any sense Chapter 90, Section 14, of the General Laws (Ter. Ed.)
2
Date of Passage
___________________________
Board of Selectmen
Attest
_______________________________
COMMONWEALTH OF MASSACHUSETTS
DEPARTMENT OF PUBLIC WORKS
SPECIAL SPEED REGULATION NO. 561
The Department of Public Works and the Registrar of Motor
Vehicles, acting jointly do hereby certify that this regulation is
consistent with public interest.
Standard sign must be erected at the beginning of each zone.
Date: September 14, 1970
By:
_______________________
EDWARD J. RIBBS
COMMISSIONER
For Highway Engineering
_____________________________
Registrar of Motor Vehicles
1
January 14, 1972
THE COMMONWEALTH OF MASSACHUSETTS
DEPARTMENT OF PUBLIC WORKS
SPECIAL SPEED REGUALTIONS NO. 683
Highway Location
GAY HEAD, CHILMARK, WEST TISBURY,
TISBURY, OAK BLUFFS AND EDGARTOWN
Authority in Control:
COMMONWEALTH OF MASSACHUSETT
DEPARTMENT OF PUBLIC WORKS
Name of Highway:
Gay Head – South Road- Misc. St. Hwy.
Chilmark
“
“
“
“
“
West Tisbury- Vineyard Haven Road-Misc
St. Hwy. Edgartown Road- Misc.
St. Hwy.
Tisbury – Vineyard Haven Road – South
Main St. and Beach Road- Misc.
St. Hwy.
Oak Bluffs-Beach Road, Eastville
Avenue, Temahigan Avenue, New
York Ave. and Seaview AvenueMisc. St. Hwy.
Edgartown-Seaview Avenue and Main
Street-Misc. St. Hwy. West
Tisbury-Misc. St. Hwy.
In accordance with the provisions of Section 18 of Chapter 90 of
the General Laws (Ter. Ed.) the following Special Speed Regulation is
hereby promulgated:
Special Speed Regulations numbered 111, 128, and 128A dated May
31, 1955, July 18, 1956 and January 27, 1965 respectively and hereby
amended by striking out the Regulations in their entireties and
inserting in place thereof the following revision.
The following designated speed limits are established at which
motor vehicles may be operated in the areas described.
EASTBOUND- South Road, Vineyard Haven Road, South Main Street, Beach
Road, Eastville Avenue, Temahigan Avenue, New York Ave.,
Seaview Avenue and Main Street
Beginning in Gay Head at Lighthouse Road
Thence easterly,
3.03 miles at 35 miles per hour to Chilmark Town line,
Thence easterly
0.31
0.31
1.20
in Chilmark,
miles at 35 miles per hour
“
“ 30 “
“
“
“
“ 35 “
“
“
2
0.23
0.81
0.37
1.11
0.93
1.02
miles
“
“
“
“
“
at
“
“
“
“
“
25
30
35
40
35
40
miles per
“
“
“
“
“
“
“
“
“
“
hour
“
“
“
“
“ to the West Tisbury town line,
Thence easterly
0.15
0.84
0.62
0.24
0.54
2.96
in West Tisbury
miles at 40 miles per
“
“ 25 “
“
“
“ 40 “
“
“
“ 35 “
“
“
“ 30 “
“
“
“ 40 “
“
hour
“
“
“
“
“ to the Tisbury town line,
Thence easterly
0.80
1.07
0.41
0.44
0.46
in Tisbury
miles at 40
“
“ 30
“
“ 20
“
“ 30
“
“ 40
miles per
“
“
“
“
“
“
“
“
hour
“
“
“
“ to the Oak Bluffs town line,
Thence easterly
0.09
0.25
0.39
0.23
0.23
0.25
0.43
in Oak Bluffs
miles at 40 miles per
“
“ 35 “
“
“
“ 20 “
“
“
“ 35 “
“
“
“ 20 “
“
“
“ 35 “
“
“
“ 30 “
“
hour
“
“
“
“
“
“ to the end of State Highway.
And beginning again in Oak Bluffs at the beginning of the State
Highway, thence easterly in Oak Bluffs
0.59 miles at 30 miles per hour
1.18 “
“ 35 “
“
“
1.19 “
“ 40 “
“
“ to the Edgartown town line,
Thence easterly in Edgartown
1.86 miles at 40 miles per hour
0.38 “
“ 30 “
“
“
0.22 “
“ 25 “
“
“ ending at the end of State
Highway; the total distance being 26.64 miles.
WESTBOUND – Main Street, Seaview Avenue, New York Avenue, Temahigan
Avenue, Eastville Avenue, Beach Road, South Main Street,
Vineyard Haven Road and South Road.
Beginning in Edgartown at the beginning of State Highway, thence
westerly
0.22 miles at 25 miles per hour
0.38 “
“ 30 “
“
“
3
1.86 miles at 40 miles per hour to the Oak Bluffs line,
Thence westerly
1.19
1.18
0.59
in Oak Bluffs
miles at 40 miles per hour
“
“ 35 “
“
“
“
“ 30 “
“
“ to the end of State Highway.
And beginning again at the beginning of State Highway west of
town,
Thence westerly in Oak Bluffs
0.43 miles at 30 miles per hour
0.25 “
“ 35 “
“
“
0.23 “
“ 20 “
“
“
0.23 “
“ 35 “
“
“
0.39 “
“ 20 “
“
“
0.25 “
“ 35 “
“
“
0.09 “
“ 40 “
“
“ to the Tisbury town line,
Thence westerly
0.46
0.44
0.41
1.07
0.80
in Tisbury
miles at 40
“
“ 30
“
“ 20
“
“ 30
“
“ 40
Thence westerly
2.96
0.54
0.24
0.62
0.84
0.15
in West Tisbury
miles at 40 miles per
“
“ 30 “
“
“
“ 35 “
“
“
“ 40 “
“
“
“ 25 “
“
“
“ 40 “
“
hour
“
“
“
“
“ to the Chilmark town line,
Thence westerly
1.02
0.93
1.11
0.87
0.81
0.23
1.20
1.31
0.31
in Chilmark
miles at 40
“
“ 35
“
“ 40
“
“ 35
“
“ 30
“
“ 25
“
“ 35
“
“ 30
“
“ 35
hour
“
“
“
“
“
“
“
“ to the Gay Head town line,
miles per
“
“
“
“
“
“
“
“
miles per
“
“
“
“
“
“
“
“
“
“
“
“
“
“
“
“
hour
“
“
“
“ to the West Tisbury town line,
Thence westerly in Gay Head
3.03 miles at 35 miles per hour
0.40 “
“ 20 “
“
“ ending at the end of State
Highway; the total distance being 27.04 miles.
4
EASTBOUND – Edgartown Road and West Tisbury Road
Beginning 215 feet east of South Road,
Thence easterly in West Tisbury
0.21 miles at 25 miles per hour
0.68 “
“ 35 “
“
“
2.31 “
“ 45 “
“
“
0.11 “
“ 35 “
“
“ to the Edgartown town line,
Thence easterly in Edgartown
0.11 miles at 25 miles per hour
0.32 “
“ 35 “
“
“
0.10 “
“ 45 “
“
“
3.09 “
“ 35 “
“
“
0.87 “
“ 45 “
“
“
0.29 “
“ 35 “
“
“ ending at the end of State
Highway; the total distance being 8.09 miles.
WESTBOUND – West Tisbury Road and Edgartown Road
Beginning 48 feet west of the beginning of State Highway,
Thence westerly in Edgartown
0.28 miles at 20 miles per hour
0.87 “
“ 35 “
“
“
3.09 “
“ 45 “
“
“
0.10 “
“ 35 “
“
“
0.32 “
“ 45 “
“
“
0.11 “
“ 35 “
“
“ to the West Tisbury town line,
Thence westerly in West Tisbury
0.11 miles at 35 miles per
2.31 “
“ 45 “
“
0.68 “
“ 35 “
“
0.25 “
“ 25 “
“
total distance being 8.12 miles.
hour
“
“
“ ending at South Road; the
Operation of a motor vehicle at a rate of speed in excess of
these limits shall be prima facie evidence that such speed is greater
than is reasonable and proper.
The Department of Public Works and the Registrar of Motor
Vehicles, acting jointly do hereby certify in writing, that this
regulation is consistent with the public interest.
5
Standard signs must be erected at the beginning of each zone.
FOR THE DEPARTMENT
DATE: January 14, 1972
BY:
_________________________
BRUCE CAMPBELL
COMMISSIONER
_________________________
For Highway Engineering
_________________________
___________________________
Registrar of Motor Vehicles
1
October 22, 1975
TOWN OF TISBURY
SPECIAL SPEED REGUALTIONS NO. 683-B
Highway Location
TISBURY
Authority in Control:
COMMONWEALTH OF MASSACHUSETTS
DEPARTMENT OF PUBLIC WORKS
Name of Highway:
Vineyard Haven Road
In accordance with the provisions of Section 18 Chapter 90 of the
General Laws (Ter. Ed.) the following Special Speed Regulation is
hereby promulgated:
Special Speed Regulations Number 683 dated January 14, 1972, is
hereby amended in the Town of Tisbury s follows.
The following designated speed limits are established at which
motor vehicles may be operated in the areas described:
TISBURY-EASTBOUND
By striking out the clause reading
0.80 miles at 40 miles per hour
1.07 “
“ 30 “
“
“
And inserting in place thereof
0.56 miles at 40 miles per hour
1.31 “
“ 30 “
“
“
TISBURY-WESTBOUND
By striking out the clause reading
1.07 miles at 30 miles per hour
0.80 “
“ 40 “
“
“
And inserting in place thereof
1.31 miles at 30 miles per hour
0.56 “
“ 40 “
“
“
Operation of a motor vehicle at a rate of speed in excess of
these limits shall be prima facie evidence that such speed is greater
than is reasonable and proper.
The provisions of this regulation shall not, however, abrogate in
any sense Section 14 of Chapter 90.
2
The Department of Public Works and the Registrar of Motor
Vehicles, acting jointly do hereby certify that this regulation is
consistent with public interest.
Standard sign must be erected at the beginning of each zone.
Date: October 22, 1975
FOR THE DEPARTMENT OF PUBLIC WORKS
By:
Traffic Engineer
_____________________________
Registrar of Motor Vehicles
Road Safety Audit—State Road at Look Street/ Edgartown Vineyard Haven Road, Tisbury, MA
Prepared by Greenman-Pedersen, Inc.
Appendix E. MassDOT Count Data
Intersection:
Count Date:
Project Name:
Subject:
State Road at Look Street/Edgartown Vineyard Haven Road
Job:
September 30, 2014
Sheet No:
Tisbury RSA
Calc. By:
2014 AM Volume Condition
Checked By:
70
MAX-2010020.25
2
of
3
NAR
Date:
10/8/2014
Date:
60
AM PEAK HOUR:
7:30 AM - 8:30 AM
N
Look Street
% HV
PHF
432
0%
3%
462
4%
0.83
0%
1
54
15
PHF
0.85
2%
PHF
3
18
290
237
169
152
State Road
State Road
Edgartown Vineyard Haven Road
% HV
0%
194
4%
375
39
0.95
3%
200
4%
433
PHF
% HV
% HV
22%
0.90
407
4%
0%
505
Intersection:
Count Date:
Project Name:
Subject:
State Road at Look Street/Edgartown Vineyard Haven Road
September 30, 2014
Tisbury RSA
2014 PM Volume Condition
76
MAX-2010020.25
3
of
NAR
Date:
Date:
Job:
Sheet No:
Calc. By:
Checked By:
3
10/8/2014
56
PM PEAK HOUR:
4:15 PM - 5:15 PM
N
State Road
% HV
PHF
% HV
0%
0%
547
2%
2%
0.73
0%
4
60
12
PHF
0.92
PHF
7
15
313
305
227
153
Edgartown Vineyard Haven Road
State Road
Look Street
530
0%
221
2%
440
34
0.92
0%
139
4%
394
PHF
% HV
% HV
0%
0.85
473
1%
1%
464
GPI Turning Movement Count Reduction Form
Volumes as Counted
Intersection:
State Road at Look Street/Edgartown Vineyard Haven Road
Count Date:
September 30, 2014
Project Name:
Tisbury RSA
Subject:
Volumes as Counted
NOTE:
7:00
7:15
7:30
7:45
8:00
8:15
L
1
1
5
4
2
4
T
16
17
13
15
9
17
Southbound
Look Street
Truck 15 min Sum to
R
Count Summary Hours
1
1
18
0
0
18
0
0
18
1
1
20
74
0
0
11
67
0
1
21
70
14:00
14:15
14:30
14:45
15:00
15:15
15:30
15:45
16:00
16:15
16:30
16:45
17:00
17:15
17:30
17:45
6
5
3
3
2
2
2
6
6
1
7
1
3
3
4
4
15
5
6
19
7
11
6
9
8
20
9
9
22
7
15
8
2
3
3
1
0
0
0
2
0
1
1
1
1
0
1
1
Start Time
Sum to Morning Max:
Sum to Evening Max:
2
0
0
0
3
1
0
0
0
0
0
1
0
0
0
0
23
13
12
23
9
13
8
17
14
22
17
11
26
10
20
13
71
57
57
53
47
52
61
70
64
76
64
67
69
L
25
27
38
44
30
40
40
39
22
30
45
37
33
30
19
33
45
33
42
27
27
21
Job:
Sheet No:
Calc. By:
Checked By:
MAX-2010020.25
1
of
3
NAR
Date:
10/8/2014
Date:
T
40
45
66
67
44
60
Westbound
State Road
Truck 15 min Sum to
R Count Summary Hours
2
1
67
1
0
73
5
5
109
2
1
113
362
5
3
79
374
6
4
106
407
Northbound
Edgartown Vineyard Haven Road
Truck 15 min Sum to
L
T
R Count Summary Hours
32
0
16
3
48
63
3
40
4
106
52
5
50
1
107
49 19 38
3
106
367
44
8
54
8
106
425
49
7
58
5
114
433
L
0
0
1
1
0
1
T
42
63
83
70
48
89
Eastbound
Overall
State Road
Truck 15 min Sum to Sum to
R Count Summary Hours Hours
52
4
94
44
2
107
43
2
127
33
1
104
432
1235
47
3
95
433
1299
46
6
136
462
1372
68
82
74
59
68
79
76
79
70
71
72
100
62
42
59
48
3
6
4
3
4
7
5
3
2
3
2
6
4
1
3
6
54
62
55
46
47
54
41
44
41
52
44
63
62
43
44
38
2
1
0
0
0
1
0
0
0
4
0
0
3
1
0
4
83
79
63
96
103
70
80
84
67
72
79
85
77
65
66
42
46
39
42
45
50
75
57
51
42
48
70
48
61
53
55
45
2
0
0
0
1
2
0
1
1
0
1
1
3
1
3
0
111
127
100
92
117
123
114
112
91
107
119
139
108
70
89
75
430
436
432
446
466
440
424
429
456
473
436
406
342
8
7
8
5
3
3
1
5
4
11
8
8
7
11
16
10
45
40
48
24
34
39
34
31
21
44
34
35
26
25
17
36
1
6
0
1
1
0
1
0
0
2
5
1
2
0
3
0
107
109
111
75
84
96
76
80
66
107
86
106
95
79
77
84
402
379
366
331
336
318
329
339
365
394
366
357
335
1
2
0
3
6
5
0
0
1
2
1
2
0
1
3
1
131
119
105
141
153
146
137
135
109
124
149
133
141
119
121
91
496
518
545
577
571
527
505
517
515
547
542
514
472
1399
1390
1400
1407
1420
1337
1319
1355
1400
1490
1408
1344
1218
1372
1490
Morning Peak Hour
7:30
7:45
8:00
8:15
Total
Trucks during Pk
Truck %
PHF (Approach)
L
5
4
2
4
15
0
0%
T
13
15
9
17
54
2
4%
0.83
Southbound
Look Street
Truck 15 min Sum to
R
Count Summary Hours L
0
0
18
38
1
1
20
44
0
0
11
30
0
1
21
70
40
1
2
152
0
0
0%
0%
Westbound
State Road
Truck 15 min Sum to
T
R Count Summary Hours
66
5
5
109
67
2
1
113
44
5
3
79
60
6
4
106
407
237
18
13
9
4
4% 22%
0.90
Northbound
Edgartown Vineyard Haven Road
Truck 15 min Sum to
L
T
R Count Summary Hours
52
5
50
1
107
49 19 38
3
106
44
8
54
8
106
49
7
58
5
114
433
194 39 200 17
8
1
8
4% 3% 4%
0.95
L
1
1
0
1
3
0
0%
T
83
70
48
89
290
8
3%
0.85
Eastbound
Overall
State Road
Truck 15 min Sum to Sum to
R Count Summary Hours Hours
43
2
127
0
33
1
104
0
47
3
95
0
46
6
136
462
1372
169
12
4
2%
Evening Peak Hour
16:15
16:30
16:45
17:00
Total
Trucks during Pk
Truck %
PHF (Approach)
L
1
7
1
3
12
0
0%
T
20
9
9
22
60
1
2%
0.73
Southbound
Look Street
Truck 15 min Sum to
R
Count Summary Hours L
1
0
22
33
1
0
17
45
1
1
11
33
1
0
26
76
42
4
1
153
0
2
0%
1%
T
71
72
100
62
305
3
1%
0.85
Westbound
State Road
Truck 15 min Sum to
R Count Summary Hours
3
0
107
2
1
119
6
1
139
4
3
108
473
15
5
0
0%
Northbound
Edgartown Vineyard Haven Road
Truck 15 min Sum to
L
T
R Count Summary Hours L
52 11 44
2
107
4
44
8
34
5
86
0
63
8
35
1
106
0
62
7
26
2
95
394
3
221 34 139 10
7
5
0
5
0
2% 0% 4%
0%
0.92
T
72
79
85
77
313
1
0%
0.92
Eastbound
Overall
State Road
Truck 15 min Sum to Sum to
R Count Summary Hours Hours
48
2
124
0
70
1
149
0
48
2
133
0
61
0
141
547
1490
227
5
4
2%