Town of Bourne
Road
d Safetty Aud
dit
dwich Road at Cranberryy Highw
way
Sand
Interrsectio
on
ember 2012
Nove
Table of Conte
ents
Backgro
ound ..............................................................................
...................................... 1
Introduction .............................................................................
...................................... 1
Project Data .............................................................................
...................................... 2
Multidis
sciplinary Team .............................................................
...................................... 2
Project Location and Descrip
ption .............................................
...................................... 3
Road Sa
afety Audit: ...................................................................
...................................... 5
Audit Ob
bservations and Pote
ential Safetty Enhancements ......
...................................... 6
Safetty Issue #1. Signage
.................................................................
........................................
... 6 Safetty Issue #2. S
ight Distan
nce and Vegetation............................
........................................... 8
Safetty Issue #3. S
peed ....................................................................
........................................... 9
Safetty Issue #4. G
eometry ..............................................................
..........................................10
Safetty Issue #5. P
avement Level and Ma
arkings ............................
.......................................... 11
Safetty Issue #6. B
icycle / Pe
edestrian Acccommodations ...............
..........................................12
Summary of Road S
afety Aud
dit ................................................
...................................
. 13 List of Appendices
Appendix A.
Appendix B.
Appendix C.
Appendix D.
Appendix E.
RSA
A Meeting Agenda ........................................................................... 15
RSA
A Audit Tea
am Contact List .............................................................. 17
Dettailed Cras
sh Data ............................................................................. 20
Add
ditional Infformation ....................................................................... 26
Roa
ad Safety Audit Referrences ............................................................ 28
List of Figures
Figure 1. Locus Ma
ap showing Sagamore Brridge, Cape C od Canal, and intersecttion. ............... 3
Figure 2.. Sandwich
h Road at Cra
anberry High
hway...............................
........................................... 3
List of Tables
Table 1.
Table 2.
Participating Audit Te
eam Memberrs .....................................
........................................... 2
Potential Safety Enhancements Summary..........................
.......................................... 14
Road Safety
y Audit – Bourn
ne, Sandwich Road at Cranberrry Highway
Backgrround All levels of government—
— local, regio
onal, state, a nd federal—
—have been considering
ocations wheere crashes are most severe for manyy years. Sevveral years ag
go the
lo
hat there should be goalls to reduce crashes, and
d in the 2005
5
national conssensus was th
ation: Safe, Accountablee, Flexible, E fficient Tra
ansportation
n Equity Actt:
feederal legisla
A Legacy for Users (SAFETEA-LU), there was m ore emphassis on improvving highwaay
afety along with a dedica
ated funding
g program—tthe Highwayy Safety Imp
provement
sa
Program (HS
SIP). The lattest federal legislation: M oving Aheead for Progress in the
211st Century (MAP-21), signed into la
aw on July 6 , 2012, has consolidated
d many
grams while retaining th
he Highway S afety Impro
ovement Pro
ogram
highway prog
HSIP) as onee of the five core highwa
ay programs..
(H
In
n an effort to
o reduce the number of crash-related
d fatalities and incapaciitating
njuries, Massachusetts developed a Strategic Higghway Safetty Plan in 20
006. The
in
mission of thee Safety Plan
n is to “Deveelop, promotte, implemen
nt, and evalu
uate datadisciplinary strategies to
o maximize s afety for ussers of the ro
oadway
driven, multid
ystem.” Onee of the man
ny strategies noted in thee Safety Plan
n is to “condu
uct Road
sy
Safety Auditss (RSA) at high-crash loccations throu
ughout the Commonweaalth.”
MassDOT inccorporated th
he RSA as a requiremen
nt for securin
ng Federal fu
unding
Highway Saffety Improveement Progrram [HSIP] f unds) for saafety projectts.
(H
The Federal Highway Adm
ministration
n (FHWA) deefines a Roaad Safety Aud
dit (RSA) ass
th
he formal safety examina
ation of an existing or fu
uture road orr intersectio
on by an
ndependent,, multidiscip
plinary team.. The purposse of an RSA
A is to identiffy potential
in
sa
afety issues and possiblee opportunitties for safetyy improvem
ments while considering
alll roadway users.
The Cape Cod
d Commissio
on, serving as the region
nal planning agency for the fifteen
owns on Cap
pe Cod, has reviewed ma
any transporrtation locatiions over thee years
to
us processes,, including the
h Regionall Transportaation Plan, th
he
during variou
Transportatio
on Improvem
ment Progra
am, and Deveelopments of Regional Impact,
onsidering th
he existing safety issues and potentiial improvem
ments. In ad
ddition, the
co
CCC began lo
ooking at speecific safety locations annually throu
ugh safety studies and
Road Safety Audits (RSAs). A portion
n of the fedeeral HSIP funds are alloccated for
mprovementts to the regiion’s highestt crash locatiions.
im
Introdu
uction
The Town of Bourne has 20,384 resid
dents as of th
he 2010 Uniited States Census of
Population, and is the firsst of the fifteeen towns on
n Cape Cod. Bourne hass recreationaal
nd visitor atttractions—swimming, fiishing, whalee watches, cruises, pathw
ways on both
an
ong with com
mmunity cen
ntered to
siides of the Canal, historiic sites and villages—alo
seervice and manufacturin
ng businessees, and the N ational Marrine Life Cen
nter.
Ro
oad Safety Aud
dit – Bourne, Sa
andwich Road at Cranberry H ighway
Page 1
Bourne has an estimated summer population of a bout 40,00
00 residents,, and is also
nd summer v isitors traveeling into and out of the
trraversed by most of the residents an
ad
djoining fou
urteen townss. The Town
n of Bourne i s situated on
n both sides of the Cape
Cod Canal with two bridg
ges for vehicu
ular transpo
ortation and one for rail crossings.
As a result, lo
ocal traffic neeeds includee crossing th
he Canal for emergency response,
seervices, scho
ools, recreatiion, and sho
opping destin
nations. Thee interregion
nal traffic
he additionall summer deemand addin
ng to the con
ngestion on the Canal
peaks with th
bridges, and most of the roadways th
hat provide a ccess toward
d the bridgees.
n March 20112, CCC stafff presented a safety updaate and poteential Road Safety Audit
In
RSA) locatio
ons to the Ca
ape Cod Join
nt Transportaation Comm
mittee (CCJT
TC), and the
(R
d by the CCJJTC included
d the Bournee intersection
n
reesulting 2012 RSA locatiions selected
off Sandwich Road and Crranberry Hig
ghway with a n equivalen
nt property damage onlyy
(E
EPDO) of 58
8, ranking it as the 22nd highest safetty problem intersection in Barnstablle
County.
Projectt Data
The crash rep
ports were reequested from the Town
n of Bourne for this Road
d Safety
Audit and weere supplied by
b the Bourn
ne Police Deepartment. The crash daata were
d a crash diag
gram was deeveloped. CC
CC staff prep
pared a grap
ph of the
reeviewed and
trraffic volumee data. The crash diagra
am, summarry data, and the traffic co
ount data arre
ncluded in th
he appendicees.
in
The Road Saffety Audit wa
as scheduled
d with MassD
DOT and thee Town. Thee Road Safetyy
Audit meeting was held on Septembeer 5, 2012, beeginning aro
ound 10:00 a.m., at the
Bourne Town
n Hall. The multidiscipliinary team a lso visited tthe site: Bou
urne,
ay, during th
he RSA meetting, and theen
Sandwich Road at Cranbeerry Highwa
reeconvened at the Town Hall.
Multidisciplin
nary Te
eam
Table 1.
Participating Auditt Team Mem
mbers
Audit Team
m Member
Rickie Tellier
Dennis Wo
oodside
Brandon Es
sip
Martin Gree
ene
Lisa Schlettzbaum
Edward Feeney
Barbara La
achance
Bill Travers
s
Glenn Cannon, P.E.
Priscilla N. Leclerc
Pa
age 2
Agenc
cy/Affiliation
Superrintendent, Bo
ourne Departm
ment of Publicc Works
Chief, Bourne Policce Departmen
nt
Sgt., Bourne Police
e Departmentt
Chief, Bourne Fire Department
MassD
DOT Highwayy Division – Traffic Safety
MassD
DOT Highwayy Div.– Districct 5
MassD
DOT Highwayy Div.– Districct 5
MassD
DOT Highwayy Div.– Districct 5
Techn
nical Servicess Director, Cape Cod Comm
mission
Seniorr Transportatiion Planner, Cape Cod Co
ommission
Roa
ad Safety Auditt – Bourne, Sandwich Road at Cranberry Highway
Projectt Locattion an
nd Desscriptio
on
The intersection of Sandw
wich Road att Cranberry Highway in the Town off Bourne is
n angled con
nnection, and both roadw
ways are fun
nctionally claassified as u
urban
an
ollectors.
co
Cranberry Hiighway conn
nects Route 6 with Sandw
wich Road, and is also th
he collector
or the surrou
unding neigh
hborhood. Cranberry H ighway has a four-lane undivided
fo
ay’s two-lanee eastbound
d section narrrows in advaance of the
crross section.. The roadwa
issland located
d at the interrsection with
h Sandwich R oad. The dashed divid
ding line is
bound as thee roadway narrows, and
d then the traaffic is split. The left
dropped eastb
urning traffic lane moves to the left of the island
d to a STOP control, and
d the right
tu
la
ane, to the riight of the island, mergees into Sandw
wich Road with a YIELD
D.
Sandwich Road is an eastterly-westerlly two-lane r oadway, alsso known as Route 6A.
The special sp
peed regulattion numberr 7604 for Saandwich Roaad is set at 35
5 miles per
hour, and thee posted speeed limit is allso 35 miles per hour.
Fiigure 1.
Loccus Map show
wing Sagamore
e Bridge, Cap
pe Cod Canal,, and intersecction.
Figure 2.. Sandwich Road at Cranb
berry Highwayy
Ro
oad Safety Aud
dit – Bourne, Sa
andwich Road at Cranberry H ighway
Page 3
0
CAPE COD
COMMISSION
Pa
age 4
Roa
ad Safety Auditt – Bourne, Sandwich Road at Cranberry Highway
Road Safety Audit:
own as Routee 6A, is a reggional two-laane roadwayy, and is often
Sandwich Road, also kno
oute 6 durin
ng congested
d times. Cran
nberry High
hway providees
used as an altternate to Ro
a connection from Route 6A to Routee 6 just beforre the Sagam
more Bridge.. Many locall
businesses an
nd residencees are situateed along both
h roadways and in the area. The
ntersection of these two roadways was the focus of the Road
d Safety Audiit (RSA).
in
The RSA Team
m met for diiscussion of the existing conditions, visited the site for field
bservations,, and returneed to discusss the safety i ssues at thee location.
ob
The RSA Team
m reviewed the crash diagram, the c rash summary, the traff
ffic volumes,
an
nd discussed
d the existing conditionss. Due to a c rash reportiing softwaree glitch in
ocating Statee Police crash
hes reported
d through th
he Registry of Motor Veh
hicles (RMV))
lo
sy
ystem, only local crash reports were used for thiis RSA. The summary crrash data,
crrash diagram
m, and trafficc volume chart were bro
ought to the RSA team meeting, and
d
arre included in the Appen
ndices.
Bourne Policee Departmen
nt provided local
l
crash r eports, and after review
w, 12 crashess
were found to
o be at the lo
ocation from
m 2009-2011,, with 7 prop
perty damag
ge only, 5
njury crashes, and no fattal crashes. The resultin
ng equivalen
nt property damage only
in
(E
EPDO) for ju
ust the local crashes is 32. Of the 12
2 crashes from
m 2009-20111, the
majority, or 58%, were an
ngle crashes, with 17% each of rear-eend and sideeswipe
n crash.
crrashes, and one head-on
Traffic volum
mes on the tw
wo routes aree about even
n. Sandwich Road totaleed 13,945 in
Average Daily
y Traffic (AD
DT) for both directions, w hile Cranb
berry Highwaay’s ADT forr
both direction
ns totaled 13
3,013 vehiclees. Both of t he roadway peak hour volumes werre
frrom 4:00-5:0
00 p.m., witth 1,135 vehicles on Sand
dwich Road and 1,021 veehicles on
Cranberry Hiighway.
Road Safety Audit observ
vations of thee safety issu
ues and poten
ntial enhanccements, and
d
a summary ta
able follow.
Ro
oad Safety Aud
dit – Bourne, Sa
andwich Road at Cranberry H ighway
Page 5
Audit Observvationss and Potenttial Saffety
Enhanccemen
nts
SAFETY IS
SSUE #1. SIGNAGE
Observation
n:
T
The team discussed the existing signs in the vicin
nity of the
in
ntersection. All of the signs need to be upgradeed for
etro-reflectiv
vity, and in particular, it was mentioned that a
re
ouple of sign
ns were fade
ed, such as, the “Enter H ere”
co
siign.
Itt was pointed out that visitors in the
e area are freequent,
arby towns are sometim
mes looking
and even resiidents of nea
or certain de
estinations. Signage in the area in g eneral is
fo
co
onfusing, esspecially if drrivers are un
nfamiliar with
h the
arket Baskett” shop that recently opeened is
area. The “Ma
he latest desstination that many have
e stopped to
o ask
th
d it. Althoug
gh adding a
directions in order to find
destination sign to the sp
pecific retail establishmeent is not
ent from the Market Baskket, there
permitted witthout payme
ould be a sig
gn directing people to “F
Factory Outleet Road”.
co
or drivers na
avigating alo
ong Sandwicch Road - Ro
oute 6A, it
Fo
was brought up that both
h signs “Route 6A West”” with the
Route 6A We
est Providence, RI Bosto
on Next
arrow, and “R
Le
eft” are conffusing. There should be
e a sign with
h the
nformation “T
To Route 6 / Sagamore Bridge” beccause that
in
iss what motorists in the area may be looking for the
co
onnection ba
ack to Route
e 6.
Another sign discussed was the yellow warning s ign
n the left
howing an angled interssection with the arrow on
sh
fo
ork; this sign
n was on San
ndwich Road
d westbound
d
approaching the Cranberry Highway intersection,, and directss traffic
o the Route 6A designated route. Ed Feeney, M assDOT Hig
ghway
to
Division District 5 Office reported tha
at Route 6A w estbound follows
Cranberry Hig
ghway from Route 6A an
nd Sandwich
h Road to Ro
oute 6,
while Route 6A eastbound follows Sa
andwich Roa d from the MidCape Connecttor. There was surprise
e by those prresent, and this
was mentione
ed as being confusing fo
or the traveliing public be
ecause
ad is Route 6A in section
ns, and com
mmonly know
wn as
Sandwich Roa
Route 6A.
Pa
age 6
Roa
ad Safety Auditt – Bourne, Sandwich Road at Cranberry Highway
SIGNAGE (continued
d)
Itt was noted that there iss no intersecction warning
g sign for th
his busy intersection.
ap directionss were discusssed, and a statement was made th
hat Bing map
ps
Electronic ma
h Road listed
d as Old King
gs Highway. GPS inform
mation needss
has Sandwich
o be accuratte and consisstent with lo
ocal signage..
to
Enhancement:
T
The directional informatio
on should be
e enhanced t hrough add
ditional or
evised signs.. Adding the
e information on the signs “to Route
e 6 west”
re
e Sagamore Bridge” will clarify that Cranberry Highway is
and/or “to the
th
he roadway connecting to Route 6 westbound. Many driverrs traveling
on Sandwich Road may be looking to
o connect wi th Route 6. Since the
e is closer to
o 195 / 495 and connecttions to Provvidence, RI
Bourne Bridge
In
ntersection warning sign
ns should be added to Saandwich Roa
ad for
mproved awa
areness of th
he Cranberry
y Highway in
ntersection. It was
im
uggested tha
at the W2-3L sign, show
wing the ang
gled intersecttion, should
su
re
ning left.
eplace the ex
xisting W1-1
10L sign thatt includes th
he arrow turn
In
n addition, itt would assisst certain mo
otorists to in
nclude directtional signs
to
o Factory Ou
utlet Road, where redeve
elopment off that area has added
ad
dditional sho
opping attractions.
All signs shou
uld be upgraded for retro
o-reflectivityy as the MasssDOT Districct Office
maintenance schedule alllows.
Itt was suggessted that having street signs with th
he roadway names may assist in
h the change
e in Route 6A
A and the co
orresponding
g roadway
alleviating confusion with
names.
An effort should be made
e to contact online map companies to update na
ame and
Route numbe
ers. As more
e people use
e Global Posiitioning Systtems (GPS), there should
d
be a check to
o ensure thatt the street signs and th
he GPS have
e the same directional
nformation.
in
Ro
oad Safety Aud
dit – Bourne, Sa
andwich Road at Cranberry H ighway
Page 7
SAFETY IS
SSUE #2. SIGHT DIISTANCE AND VEGETATION
Observation
n:
Itt was observ
ved that sigh
ht distance from
he Cranberry
y Highway approach to turn
th
le
eft onto Sand
dwich Road is obscured by
bushes that have grown high on the
issland at the gas station.
With 58% of crash type being angle
crrashes, imprroving the sight distance
e for
urning vehicles will contrribute to saffety.
tu
Vegetation on
n Sandwich Road
westbound was also note
ed to be grow
wing
ver the signs.
ov
Enhancement:
T
Trim or cut back the vege
etation for
im
mproved visibility on the
e corner islan
nd of
th
he gas statio
on property.
T
Trim the tree branches back on
Sandwich Roa
ad and/or re
elocate the sign
fo
or improved prominence
e.
Pa
age 8
Roa
ad Safety Auditt – Bourne, Sandwich Road at Cranberry Highway
SAFETY IS
SSUE #3. SPEED
Observation
n: It was no
oted
th
hat speed co
ombined with
h the
e and volume of
siight distance
tu
urning move
ements results in
crrash experie
ence. 58% of the
ocal intersecttion crashess from
lo
2009-2011 were angle crrashes.
Sandwich Roa
ad, also known as
Route 6A, is a major eastt-west
re
egional route
e where driv
vers
may tend to travel over the
peed limit.
sp
Sandwich
S
Road
d (Route 6A) att Cranberry Hig
ghway, Bourne
e.
Note
N
that secon
nd vehicle is pu
ulling over the centerline/cutti
c
urn. This
ng the corner tto take a left tu
vehicle
v
may not be visible to Sandwich
S
Road
d eastbound tra
affic until it is to
oo late.
ue periodic police enforccement of tra
aveling spee
eds along
Enhancement: Continu
Sandwich Roa
ad and in the vicinity of the intersecction to enco
ourage comp
pliance for
im
mproved safe
ety.
Consider additional meassures in the long term, ssuch as a rou
undabout to reduce
sp
peeding and
d enhance multi-modal safety.
Ro
oad Safety Aud
dit – Bourne, Sa
andwich Road at Cranberry H ighway
Page 9
SAFETY IS
SSUE #4. GEOMETR
RY Observation
n:
T
The island on
n Cranberry Highway at the
in
ntersection was brought up in
nd it was sug
ggested thatt
discussion, an
ging the inte
ersection
perhaps bring
mprove
sttraighter to a “T” may im
operations. Vehicles turn
ning left from
m
Cranberry Hig
ghway have a STOP sign
n,
while vehicless turning right merge an
nd
th
hen YIELD in
nto eastboun
nd Sandwich
h
Road. There was also a comment th
hat
emoving the
e island and having adjaccent
re
anes for right and left turns may cau
use
la
siight line visib
bility issues. A vehicle in
he right lane
e, especially a larger spo
ort
th
uck, may blo
ock
uttility vehicle (SUV) or tru
th
he view of th
he driver turrning left.
oted that driivers on
Itt was also no
Sandwich Roa
ad westboun
nd taking the
e
eft onto Cran
nberry Highw
way were
le
he actual
sttarting to turn prior to th
ntersection, and this may
y be
in
co
ontributing to the crashe
es. Reportedly,
his cutting accross the ce
enterline earlly to
th
urn was worse prior to the installatio
on
tu
off the island.
A roundaboutt was suggested as a lon
ngte
erm considerration for this intersectio
on
to
o improve sa
afety, reduce
e conflicts, slow traffic, a nd
ontrol turnin
ng movemen
nts.
co
Itt was stated that on San
ndwich Road
d the lack of
dequate sho
oulders is a possible conttributing facctor
ad
o crashes.
to
Enhancement: Conside
er improving
g the geomettric
onfiguration of the intersection through
co
djustment of the Cranbe
erry Highway
y approach
ad
and island, orr through co
onversion to a roundabo ut.
Consider shou
ulder widening on Sandw
wich Road in
n
th
he vicinity off the intersection.
Pa
age 10
Roa
ad Safety Auditt – Bourne, Sandwich Road at Cranberry Highway
SAFETY IS
SSUE #5. PAVEMEN
NT LEVEL AND MAR
RKINGS
Observation
n:
Itt was mentio
oned that the
vel on Cranberry
pavement lev
Highway for the left turn
ower than Sa
andwich
approach is lo
Road. The issland is just prior to
hat leg coming westboun
nd on
th
ad. Therefo
ore,
Sandwich Roa
drivers comin
ng westbound on
ad and turning left
Sandwich Roa
onto Cranberry Highway may not
ee the double yellow cen
nterline
se
until they are
e actually tak
king the
urn. This ma
ay add to wh
hy
tu
utting over early to
drivers are cu
tu
urn left, as mentioned on the
e.
previous page
Craanberry High
hway at Sandwich Road,, Bourne
Enhancement:
Consider raisiing the levell of the Cran
nberry Highw
way
way improve
ements or
approach as part of roadw
maintenance efforts.
Ro
oad Safety Aud
dit – Bourne, Sa
andwich Road at Cranberry H ighway
Pa
age 11
SAFETY IS
SSUE #6. BICYCLE / PEDEST
TRIAN ACC
COMMODA
ATIONS Observation
n:
A curbed side
ewalk exists on part of
th
he northerly side of Sand
dwich
Road and the
en ends oppo
osite the
Cranberry Hig
ghway interssection.
Ex
xisting bicyccle accommo
odations
are generally lacking thro
ough the
ntersection.
in
Enhancement:
oved accomm
modation forr pedestrian s and bicyclists through roadway
Provide impro
im
mprovementts or mainten
nance effortss.
Pa
age 12
Roa
ad Safety Auditt – Bourne, Sandwich Road at Cranberry Highway
Summa
ary of Road Safetyy Auditt
T
The summary
y list of the Road Safety Audit obserrvations and enhanceme
ents is
or implemen
ntation of po
otential improvements
provided to assist in the design and/o
elicited during
g the processs. It is also
o recommend
ded that anyy design pro
ocess for
more involved
d geometric changes incclude furtherr analysis an
nd public inp
put.
Safety payofff estimates are subjectiv
ve and may b e based on
n the relative
e percent of
crrashes that may be redu
uced by the enhancemen
nt based on known and documented
d
crrash reductio
on factors, iff available, or estimated
d crash reducction based on a stated
ource [for ex
xample, low (<30%), medium (31%
% to 70%), and high (>7
71%)]. The
e
so
time frame is categorized
d as short-te
erm (<1 yearr), mid-term
m (1 to 3 yea
ars), or long-te
erm (>3 yea
ars). The costs are categ
gorized as lo
ow (<$10,00
00), medium
m ($10,001 to
o
$50,000), or high (>$50,,001).
Bourne is hom
me to many residents an
nd also a desstination forr visitors to Cape Cod. In
ad
ddition to th
hose traveling to visit Bo
ourne, fourteeen towns to
o the east arre accessed
hrough Bourrne as gatew
way to Cape Cod. There is a desire in
n the town to improve
th
trraffic operatiions and saffety for both residents and visitors.
Ro
oad Safety Aud
dit – Bourne, Sa
andwich Road at Cranberry H ighway
Pa
age 13
Table
e 2. Potential Safety Enhanccement Summa
ary
Sa
afety Issue
Potenttial Safety Enhancement
Safety
Payoff
Time Frame Cost
Responsible
Ag
gency
Siignage
C
Confusion / directtional
W
Warning
C
Condition
E
Electronic mappin
ng
Add sig
gns to direct travele
ers to Route 6 and/o
or Sagamore Bridg
ge
from Sa
andwich Road; Add
d directional sign “to
o Factory Outlet Ro
oad”
Add inttersection warning signs
s
on Sandwich
h Road; remove the
e sign
W1-10L
L and replace with W2-3L
All sign
ns to be Retro reflec
ctive
Coordin
nate with online ma
ap companies to ha
ave improved public
c
directio
onal information tha
at is tied in with loca
al signage
Low to
Medium
Short-term
Low
M
MassDOT
with local input
Trim orr remove bushes on
n the gas station island at Cranberry
Highwa
ay where left turning
g vehicles line of siight is obscured
Low
Short-term
Low
Trim otther vegetation as necessary to allow improved visibility of
highwa
ay signs along Sand
dwich Road
Low
Short-term
Low
Continu
ue periodic enforce
ement of the speed limit.
Medium
Mediumterm
Medium
Consider a roundabout orr other traffic calmin
ng
High
Siight Distance
Vegetation
Sp
peed
C
Continue monitoring
C
Consider a roundabout
Ge
eometry
C
Consider roundab
bout
sland
I
S
Shoulders
Consider converting this intersection to a rou
undabout in the longterm
stments to provide improved guidance for
Consider geometric adjus
vehicular movements arou
und the island
Consider shoulder improv
vements on Sandwiich Road in the viciinity
of the intersection
Pa
avement Level &
Markings
Adjust pavement level where lower on the Cranberry Highway
ach to turn left onto Sandwich Road to bring up to Sandw
wich
approa
Road le
evel
Biicycle / Pedestrian
acccommodation
Consider improved accom
mmodation for bicyc
clists and pedestria
ans
with futture improvements or maintenance prrojects
Page 14
Medium too
High
Long-term
High
MassDOT
with
w local input
M
MassDOT
with local input
Long-term
High
Long-term
High
Low
Mediumterm
Medium to
High
M
MassDOT
with local input
Medium
Medium to
Long-term
Medium to
High
M
MassDOT
with local input
Low
Road Safety Au
udit – Bourne, Sand
dwich Road at Cran
nberry Highway
MassDOT
with
w local input
Appendix A. RSA Meeting Agenda Road Safety Audit –
Page 15
Appendix B. RSA Audit Team Contact
List
Road Safety Audit –
Page 17
Road Safety Audit –
Page 19
Appendix C. Detailed Crash Data Page 20
Road Safety Audit – Bourne, Sandwich Road at Cranberry Highway
Colrsion Diagram
0
Cl)
...
c
.2::
»
(,)
c:
Cl)
*
tJ)
Cl)
a:
CAPE COD
Indicate North by arro
COMMISSON
Route 6A ( andwich Rd.)
<
E
s.G)
. ~®
0'fsJ[S;J
.~···
,. . . ·· ··· · ·
Not to Scale
SYMBOLS
TYPES OF COLLISIO
Each accident is numbered and
+--­
~ Bac ·ng Vetfcle
on-involved Ve ·cle
<( - - -
R.
Pedestlian
cro
Bicyclist
[SJ
p
0
•
0
E
E
ed Vehicle
Fatal Accident
Acdden
Vehicle Path
INTERSECTION _
CRASHES FRO
addi ional information is induded
~-E- Head On
E~
on the acciden summary.
SideS ·
~ OUt o Control
FocedObjed
In·
Rear-End
=:r
~
~
Turning
ovement
Angle
Lane Departu
e
Ani
_!R
~o
~ut
~e"-.:6~A~
S!!!
an~d......,~
R""'
oa
""d,._
AND
-----~2~00~9~_________ To
Cranbeny High ay
Towno Bourne
___~2~0~11~----------------
n of
Source: Crash Diagrram developeed based on 2009-2011 c rash reportts provided by the Town
Bourne Police Deparrtment
Road Safetty Audit –
Page 21
Crash
Number
1
2
3
4
5
6
7
Page 22
Crash Date
1/22/2009
5/14/2009
7/13/2009
8/14/2009
3/24/2010
3/24/2010
7/16/2010
Crash Time
8:23 PM
2:18 PM
10:30 AM
3:08 PM
4:31 PM
5:08 PM
9:29 AM
# of
vehicles
2
2
2
2
2
2
2
# of
injuries
0
1
0
0
0
1
1
Manner
Vehicle action prior
to crash
Veh. travel
direction
Veh. sequence of events
Road
Surface
Weather
dry
clear
sideswipe
Vehicle 1 & Vehicle
2 travelling in the
same direction
Veh 1 SB
Veh 2 SB
Vehicle 2 attempts RT
from left lane into 1 STOP
hitting Vehicle 1 in the
next lane
angle
Vehicle 1 travelling
NB thru
intersection
Veh 1 NB
Veh 2 EB
motorcycle
Vehicle 1 crossing Rte.
6A while Vehicle 2
motorcycle EB lays down
to avoid Vehicle 1 in path
dry
cloudy
angle
Vehicle 1 attempts
LT while Vehicle 2
EB on Sandwich
Rd
Veh 1 NB
making LT
Veh 2 EB
Vehicle 1 pulling out to
turn left hit passenger
side of Vehicle 2
dry
clear
angle
Vehicle 1 at
Cranberry Highway
STOP attempt LT
while Vehicle 2 EB
on Sandwich Rd
Veh 1 NB
making LT
Veh 2 EB
Vehicle 1 pulls out to take
LT colliding with EB
Vehicle 2
dry
clear
rear-end
Vehicle 1 and
Vehicle 2 travelling
same direction in
traffic
Veh 1 WB
Veh 2 WB
Vehicle 1 stopping in
traffic is rear-ended by
Vehicle 2
dry
clear
angle
Vehicle 1 WB on
Sandwich Rd and
attempts LT to
Cranberry Hwy
Veh 1 WB
making LT
Veh 2 EB
Vehicle 1 turning left onto
Cranberry Highway &
Vehicle 2 hits passenger
side
dry
clear
rear-end
Vehicle 1 and
Vehicle 2 travelling
same direction
Veh 1 WB
Veh 2 WB
Vehicle 1 stops suddenly
for a raccoon crossing
and is rear-ended by
Vehicle 2
dry
clear
Road Safety Audit – Bourne, Sandwich Road at Cranberry Highway
Crash
Number
8
9
10
11
12
Crash Date
8/22/2010
3/27/2011
5/5/2011
10/7/2011
11/17/2011
Crash Time
2:30 PM
5:26 PM
6:36 PM
10:59 AM
7:43 AM
# of
vehicles
2
4
2
2
2
# of
injuries
0
1
1
0
0
Vehicle action prior
to crash
Veh. travel
direction
angle
Vehicle 1 at
Cranberry Highway
STOP attempt LT
while Vehicle 2 EB
on Sandwich Rd
Veh 1 NB
making LT
Veh 2 EB
sideswipe
Vehicle 1 EB
Sandwich Rd then
left, right and out of
control rolling over
Veh 1 EB
Veh 2-3 Prk
Veh 4 WB
head-on
Vehicle 2 WB on
Sandwich Road
and swerves
Veh 1 EB
Veh 2 WB
Manner
angle
angle
Vehicle 1 WB on
Sandwich Rd and
swerves
Vehicle 1 at
Cranberry Highway
STOP attempt LT
while Vehicle 2 EB
on Sandwich Rd
Vehicle 2 hits Vehicle 1
as Vehicle 1 attempts LT
from Cranberry Highway
to Sandwich Rd WB
Vehicle 1 EB crosses into
WB lane hitting mirror
Vehicle 4 then right into
two parked vehicles ( 2,
3) & roll over
Road
Surface
Weather
wet
cloudy
dry
clear
wet
cloudy
Veh 1 WB
Veh 2 EB
Vehicle 1 travelling EB on
Sandwich Rd. when hit
head on by Vehicle 2
Vehicle 1 sees
slow/stopped traffic in
front and swerves into
oncoming traffic and was
hit by EB box truck
dry
clear
Veh 1 NB
making LT
Veh 2 EB
Vehicle 2 hits Vehicle 1
as Vehicle 1 attempts LT
from Cranberry Highway
to Sandwich Rd WB
wet
cloudy
Source: Bourne Police Department crash reports for this location from 2009-2011.
Road Safety Audit –
Veh. sequence of events
Page 23
Page 24
Road Safety
y Audit – Bourn
ne, Sandwich Road at Cranberrry Highway
CRASH MANNER OF COLLISION
70%
60%
50%
40%
30%
20%
10%
0%
0%
Single
Vehtde
Crash
Rear-end
Ange
Sldeswtpe. Sideswipe. Head 011
S.1l11e
~e
dtri!C1ion
dftelion
0%
0%
Rea.r 10
Rear
Unknown
Driver Contributing Code
30%
25%
25%
20%
15%
10%
5%
0%
CRASH ROAD SURFACE
80%
60%
40%
20%
0%
0%
~
~
~
e
en
0%
1!
0%
t:! -
ti-al
c:
· t:~t
~~ ~
0%
0%
0%
0%
ci-.-=~
--o ~
i
~
0
!
f! e
.iZ
CJ)
c;
~
CRASH WEATHER CONDITION
80%
60%
40%
20%
0%
Road Safetty Audit –
0% -0%
-0%
- -0%
- -0%
-0%
- -0%
1
Page 25
Appendix D. Additional Information o
Page 26
Hourly Traffic Volumes Graph:
Road Safety Audit – Bourne, Sandwich Road at Cranberry Highway
Bourne Route 6A- andwich Road and Cranberry Highway, Hourly Traffic Volumes
1400
1200
!5
1000
-+--
:I:
...
~
:
u
6A~arut.
e t sa
800
s::.
41
>
'14. at.
IC:I'I T
Tlle5clay, J ry 19, 2()1 1
0
600
Cape Cod Commission
Traffic Counts
Time of D y
Road Safety Audit –
Page 27
une.
Appendix E. Road Safety Audit
References
Page 28
Road Safety Audit – Bourne, Sandwich Road at Cranberry Highway
Road Safety Audit References
Road Safety Audits. Institute of Transportation Engineers and U.S. Department of
Transportation, Federal Highway Administration, www.roadwaysafetyaudits.org.
FHWA Road Safety Audit Guidelines. U.S. Department of Transportation, Federal Highway
Administration, 2006.
Desktop Reference for Crash Reduction Factors. Report No. FHWA-SA-08-011. U.S.
Department of Transportation, Federal Highway Administration, September 2008
MassDOT Highway Division Traffic Engineering and Safety resources online, at
http://www.mhd.state.ma.us/default.asp?pgid=trafficIndex&sid=level2
U.S. DOT Memorandum from Tony Furst, Acting Associate Administrator for Safety, to Division
Administrators, January 12, 2012, Promoting the Implementation of Proven Safety
Countermeasures
Road Safety Audit –
Page 29