Preview
FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015
NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022
Suffolk County Department of Public Works
Traffic Engineering
335 Yaphank Road
Yaphank, NY 11980
Study No. (S/N): CR048-2000-012 UPDATED STUDY MEMORANDUM
Location: CR 48,Middle Road at Depot Lane, Cutchogue
Request: Upgrade Existing Flasher to 3-Color TrafficSignal
Date: December 10,2013, revFebruary 5, 2014
To: Robert F. Hilhnan, Jr.Traffic Engineer III
From: PatriciaRalph, Traffic Technician III
REQUEST:
Correspondence from the Town of Southold,
dated 12/30/99and twoletters
from individual
residents,
dated 6/23/01and 8/22/02,requestthata study be done to consider
the installation
of traffic
a 3-color signal
to replacethe existing
flasher
at the above-referred
intersection.
Preliminarytechnicalmemorandum dated
January 4, 2013rev,completed this
study subjectto a recommendationfor further
data collection,
review
and analysis.Furtherdata collection,
review and analysis
has been completed recommended.
as previously
EXISTING CONDITIONS/OBSER,VATIONS:
CR 48,Middle Road, is classified
as an Urban Principal having
Arterial, two lanes in each direction
with
additional lanes for
auxiliary right
and leftturnmovements. Opposing and right-turns
left-turn on CR 48
are channelizedand delineated
with pavement markings. CR 48 maintainsa grass/vegetated
median,
20'-30' 7'
approximately wide and roadway shouldersat approximately wide. north
Traffic, and southon
Depot Lane, is controlled
withstop signsat the intersection
with CR48. In addition,
asupplemental flasher
is presentwithred indications
facingDepot Lane and amber indications
facingCR 48. This segment of CR
48 is straight
and level
in proximityto the intersection
with a slight
horizontal
curve to the north,
beginning
600'
approximately east of the intersection.
The stoppingsight at 55 miles
distance required per houris
495' 570'
reconunended at or at 60 miles
per hour,and is available
to motorists west
travelling on CR 48 to
avoid conflicts
with vehicles
south on Depot La,(which is the inside
of thecurve wheresightlines
would
be less than
the otherapproaches).Vehicle vohunes on this approach less than those
are substantially on
the northbound approach.
Depot La. is a two
lane,two-way roadway witha full
barriercenter line south
of CR 4 8 and stop lines
on
each approach toCR 48. Bothroadways straight
are generally and level
with sight
sufficient distanceon
allapproaches.
In proximityto Depot Lane,the nearest signals
traffic along 0.63 miles
CR 48 are approximately to the east
(Cox Lane) and 2.66miles to the west
(Wickham Avenue).
ACCIDENTS: UPDATED DATA REVIEW & ANALYSIS
Latestavailablethreeyear(36 months) accident August
history; 31, 2009through August 31, 2012is
compiled below. We note the more currentaccident from
history the Town of Southold(outsideSCPD).
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FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015
NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022
YEAR Right Ped* LeftTurn Rear Other
om-to An le O osin End
2009-2010 1 0 0 0 2
2010-2011 2 0 0 0 0
2011-2012 2 0 0 0 3
*Pedestrian
The crashdata above shows a greater
injuryrate (70%)thanprior provided
crash data (44%) in the earlier
techmemo dated January
4, 2013. Seven (7)oftheten (10)reportedcrashesincurred and one
injuries
in a fatality.
crash resulted Allseven of these crashes involved north
of a vehicle
the action on DepotLa.
the right-of-way
violating of a vehicle
traveling
alongCR 48. The quantity does not
of crashes reported
satisfythe crash experience
criteria
(TrafficSignalWarrant #7),as the principal the
reason to consider
of
installation a traffic
signal.However, 70 percentofthe crashtypesreportedmay becorrectablewiththe
metallationof a traffic
signal.
STUDIES: UPDATED DATA REVIEW & ANALYSIS
A turning movement count was conductedon May 23, 2012during the highest peak hours
early evening
between 3pm -5pm when the minor street(DepotLane)experiences the most activity.
traffic Thisdata
was referencedto approximatethe percentturningmovements in the northbound
at the intersection
direction.The data indicates
thatapproximately40 % of the approachvolume turn
made a left and 40%
made a right
turnand the remaining20% wentstraight,This the effects
data was used to consider of right
turnsfrom the northbound(higher)approach volume.
A spot speedstudy was conducted on April
5, 2012 at a location
approximately280 it.east of Depot
La.
indicatingthe85th speed
percentile foreastboundand westbound traffic
is65 mph and 61 mph,
respectively.The postedspeed limitis 55 MPH.
24-hour, 7-daytrafficvolume counts wereconducted in July2013 along DepotLa.at a point
100'
approximately southofCR 48. Thisdatashowed thattheaverageweekday traffic
(AWDT) was
approximately 1,446vehicles,northbound onlyon Depot La.
volume
traffic counts wereconducted in July2013 La. at a point ·
24-hour, 7-day along Depot
500'
approximately north ofCR 48.This datashowed thattheaverageweekday traffic
(AWDT) was
approximately 467 southbound
vehicles, only on DepotLa.
24-hour, 7-day traffic
volume counts wereconducted in August 2012 along 1.4
CR 48 at a point miles
west of DepotLa. The data collected
showed that the average
weekday traffic
(AWDT) was
approximately 13,860 7,011
vehicles; eastbound
vehicles and 6,849 vehicles
westbound. This AADT is.
slightlyless than the 14,674
vehicles(AADT) recorded at this
same locationin 2009.
Intersectionsightdistancewas reviewed on April12, 2012during a filed which
visit, revealed that sight
distanceis adequatewithno issues fromany approach in any direction.
Itis noted that the higher
volume
sidestreetapproach to CR 48 is located
on the outsideofa verylarge curve
horizontal withadequate sight
linesineach direction.The most sensitive
sightdistanceside would
street approach be the
generally
southbound approach (insideof verylargehorizontal
curve) lookingtoward Scaled
the east. distanceoff
aerialphotography shows thatapproximately750 ft.is available
from point
a departure the
14.5 ft. from
nearesttravellanelooking east. The vehicledeparturepoint was determinedin accordancewith
establishedguidelinespublishedby AASHTO and ITE. All otherapproacheswould have greatersight
distancesavailable.The availablesight
distance (750 exceeds the recommended
ft.) sight
645 f t. stopping
distancefor vehicles
travelingalongCR 48 ata speedof 65mph. Subsequent toafieldinspectionon
January 14, 2014 that available
it is confirmed intersectionsightdistance
(over exceeds
1000 feet)
recommended stoppingsightdistanceon all
approaches and in all
directions.
Trafficsignalanalyses were conductedusing the August2012 hourly volumesrecorded alongCR 48 and
the July2013 hourlyvolumes collected
along Depot La. The results that
indicate signal
traffic warrants#1
(8-Hour volume), #2 (4-Hourvolume) and #3 (PeakHour Volume) were In
satisfied. addition,an analysis
was done thatconsidered of right
the effects turnson the highervolume approach.
minor-street
The effectsof right
turn vehiclesatthestudy were
intersection considered.Consideringthe effects
of
northbound Depot La. rightturnsat the intersection;
60% of the northbound volume
traffic was used as the
approach volume on the highervolume minor-street.
This scenarioeliminates movements
all the right-turn
from the approachvolumes used in.thesignalwarrantanalysis.
As a result,
onlythe 8-Hourvolume warrant
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FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015
NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022
is satisfied.
When halfof the right
turnvolume is added to the through
and left
turnvolume on the higher
volume minor-streetapproach (80% northbound approachvolume) traffic
signalwarrants#1 and #2 are
satisfied.
CONCLUSIONS: UPDATED
Allprevious recommendations from technicalmernorandum dated April
4, 2012,last revised
January
4, 2013have been carriedout.
A request forsign maintenancewas forwardedto work crewsas approvedon November 14, 2012and
revisedon January4, 2013. Thiswork was completed on January9, 2013.
A request for pavementmarking maintenancewas forwarded to Countyengineeron April11, 2012.
County records indicate
that this
work was completed on August 17, 2012.
A requestfor speedenforcement was forwarded Police Department
to the Southold on or about
November 15, 2012.
Updated volume
traffic data (7-Days,
24-Hours) was collected
(ATR) in July
2013 along DepotLane
to recordvehiclevolumes north
traveling andsouth approachingCR 48.
Updated trafficvolume data has beencollated
and evaluated. Signal
Traffic Warrantanalyses have
been conducted usingthisdata.
Crash data updateshavebeen included above.70% of the reported
crashes maybe of the type
correctablewitha traffic
signal.However, thequantityof crashesdoesnotsatisfythe criteria
recommended for Traffic
Signal Warrant#7, Crash Experience,when consideringthe installation
of a
traffic
controlsignal.
The existingtraffic
signal provides
flasher a visual
indicationof the potential
for traffic on
activity
approach to the intersection
within thisrural
setting.
Updated traffic
signalwarrant analysesindicate
that traffic
signalwarrants#1 (8-Hourvolume), #2 (4-
Hour volume) and #3 (Peak Hour Volume) were satisfied
when usingthe August 2012 volume along
CR 48 and the July2013 volume along Depot La. Itappears that a traffic
signalmay be considered.
Considering the effects
of northboundDepot La.rightturnsat the intersection;
60% of the northbound
traffic
yolume was used as the approachvolume on the higher
volume minor-street.
This scenario
eliminatesall the right-turn
movements from the approachvolumes warrant
used in the signal analysis.
As a result,
onlythe 8-Hour volume warrantis satisfied.
Consideringthe effectsof northboundDepot La. right
turns 80%
at the intersection; of the northbound
volume
traffic was used as the approachvolume volume
on the higher minor-street.Thisscenario
includeshalfof the right-turn
volume along withthe through northbound
and left turn approach
volume used in the signal
warrantanalysis.
As a result, #1 and #2 were
signal warrants
traffic satisfied.
Itis notedin the MUTCD that satisfaction
ofa signal
warrant or warrants
shallnot,in itself,
require
the installation control
of a traffic signal.
Itis notedthatall
threeof the 5-year
projectedvehiclevolume warrantsare satisfied 100%
utilizing
and 80% of the higher
volume minor-street
northbound approach.
This engineeringstudyconcludes thatin accordancewithguidelines in the 2009
established Pederal
Manual on Traffic
Control Devices(MUTCD) and 2011New York State Supplementto the MUTCD
and applyingengineeringjudgment when consideringthe installation
of a new traffic
control
signal,a
traffic
controlsignalis not acommended at this
time.
RECOMMENDATIONS: UPDATED
" Provide request
a written to the SoutholdPoliceDepartment for selective
enforcement of the posted.,--
9
speed limit.
Consider a future
capitalproject
that addresses the reduction speed along
of vehicle CR 48 if
enforcement does not yield
favorableresults.
Signal"
" .Consider a future
capitalproject
to considerthe upgradeof the existing
"Flasher at this
intersection,
includingevaluation
of accidentdata and spot to determine
speed study results ifa traffic
controlsignalis needed to
improve traffic
safetyat this
intersection.
" Close case.
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FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015
NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022
Suffolk County Department of Public Works
Traffic Engineering
335 Yaphank Road
Yaphank, NY 11980
Study No. (S/N): CR048-2000-012
Location: CR 48 (Middle Rd.) at Depot Lane, Cutchogue
Request: Upgrade Existing Flasher to 3-Color Traffle Signal
Date: April 4, 2012, revJuly 11, 2012; rev 1/4/13
To: Robert F. Hillman,Jr. TrafficEngineer IH
From: PatriciaRalph, TrafficTechnician m
REQUEST:
Correspondence from the Town of Southold, dated 12/30/99 and two lettersfrom individual
residents,dated 6/23/01 and 8/22/02, request thata study be done toconsider the installation
of a
3-color trafficsignalto replacethe existingflasher above-referred
at the intersection.
EXISTING CONDITIONS/OBSERVATIONS:
CR 48, Middle Road, as an
is classified Urban Principal Arterial,having two lanes ineach
directionwith additionalauxiliarylanes forright and leftturnmovements. Opposing left-turn
and right-turns on CR 48 are channelized and delineated with pavement markings. CR 48
20'-30'
maintains a grass/vegetated median, approximately wide and roadway shoulders at
7'
approximately wide. The intersectionofCR 48 and Depot La. iscontrolledwith stop signs
controlling traffic
north and south on Depot La. A supplemental trafficcontrol,consistingof a
flasher with redindicationsfacing Depot La. and amber indicationsfacingtrafficon CR 48,
operates at thisintersection.
Depot La. isa two lane,two-way roadway with a fullbarriercenter linesouth ofCR 48 and stop
lineson each approach to CR 48. Both roadways are generallystraightand levelwith sufficient
sightdistance on allapproaches.
The nearesttrafficsignalsalong CR 48 in proximity to Depot La. include Cox La., approximately
0.63 milesto theeast and Wickham Ave., approximately 2.66 miles to thewest.
ACCIDENTS: Latestavailable threeyear (36 months) accident history(September 29, 2008
through September 30, 2011)
Right Ped* Left Turn Rear Other
__________ Anagle O osin End
2008-2009 0 0 1 I 2 .
*Pedestrian
1
FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015
NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022
As indicated above, thereare insufficientcrashfrequencies and severitythatjustify,as the
principalreason, the installation
of a traffic
signalrelativetoMUTCD Warrant # 7 Crash
Experience.
STUDIES:
A turning movement count was conducted on May 23,2012 during thehighest earlyevening peak
hours between 3 - 5 PM when the minor street
(Depot Lane) experiences the most traffic
activity.
This data was consistent withthe vehicle volumes along CR 48 and Depot La. recorded on each
roadway in March 2009. In addition,northbound Depot La. higher
is the volume minor street
approach with 40% and 42% of theapproaching traffic(203 vehicles,totalin2 brs)making lefts
and rights,respectively. The southbound approaching traffic
(73 vehicles,totalin 2 hrs)has 51%
making rightsand approximately 19% making lefttums. Leftturns from westbound CR 48 make
up approxirnately 8% ofthe approaching traffic
with a totalof95 vehicles over a two hour
(3:00pm to 5:00pm) period. It isnoted thatsignificantpercentage increases intrafficvolumes
similar tothose recorded on CR 48 may be expected on Depot La. duringthe summer months.
A spot speed study was conducted on April 5,2012 at a location
approximately 280 ft.eastof
Depot La. indicatingthe 85th percentilespeed for eastbound and westbound trafficis65 mph and
61 mph, respectively. The posted speed limitis 55 MPH. This was verified NYSDOT ine-
by
mail dated Dec. 3, 2012.It appears thata significantvolume ofmotorists travelat a speedgreater
than the postedspeed limitand selective enforcement should be considered.
24-hour, 7-day traffic
volwne counts were conducted inMarch 2009 along Depot La. at a point
immediately north and south of CR 48. This data showed that theaverage weekday traffic
(AWDT) was approximately 1,553 vehicles along Depot La. Seventy-two percent(72%) ofthat
volume travelsnorthbound approaching CR 48 from the south. The remaining 28% of traffic
approaches from the north.
24-hour, 7-day traffic
volume counts were conducted inMarch 2009 along CR 48 at a point
immediately eastand west ofDepot La. This data showed thatthe average weekday traffic
(AWDT) was approximately 12,160 vehicles along CR 48. Fifty-two percent (52%) ofthat
volume travelseastbound approaching Depot La. from the west. The remaining 48% of traffic
approaches from the east.
24-hour, 7-day traffic
volume counts were conducted in August 2009 along CR 48 at a point1.4
miles west of Depot La. This study showed that theaverage weekday traffic
(AWDT) was
approximately 18,100 vehicles. Itisnoted that therewas increase
a significant in traffic
volumes
along CR 48 in August (from March) most likelydue to theseasonal fluctuationassociatedwith
the characterof the North Fork of Suffolk County.
Trafficsignal analyses were conducted using the March 2009 volumes and the August 2009
volumes recorded along CR 48. The same March 2009 volumes along Depot La. were used for
each analysis. The resultsindicate thattrafficsignalwarrants #1(8-Hour volume) and #2 (4-Hour
volume) were satisfiedwhen using theMarch 2009 volume along CR 48. Traffic signalwarrants
#1, #2 & #3(Peak-Hour volume) were satisfiedwhen the August 2009 volumes along CR 48, were
used. The laterwarrant #3 is usuallyapplicable in unusualcases where the discharge ofa large
quantity of vehiclesoccurs in one hour.
This study considered the effectsofright turnvehicles at thestudy intersection.The two-hour
turning movement count during thepeak period (3-5pm) resulted in42 percent ofthe Depot Lane
approach volumes making right turns. These rightturnsare channelized and a separate
utilize
acceleration lane on CR 48 to merge withthe two eastbound through lanes. The remaining 58%
of vehicles made a left
or went straightthrough the intersection.A trafficsignalwarrant
evaluation was done to determine the results
of using 58% ofthe weekday average higherside
streetapproach volumes.
2
FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015
NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022
CONCLUSIONS:
Sign and pavement marking maintenance is neededat and near thisintersection.
There are insufficient
crash frequencies and severitythatjustify,asthe principalreason, the
installationof a traffic
signalrelative.toMUTCD Warrant # 7 Crash Experience.
The 85 percentilespeed for eastbound and westbound trafficis 65 mph and 61 mph,
respectively,which appears to be significantly
higher than theposted 55 mph speed limit.
The existingtrafficsignalflasherprovides a visualindication of the potential
fortraffic
activityon approach to theintersectionwithin thisruralsetting.
Traffic signalwarrant analysis resultsindicatethattrafficsignalwarrants #1 (8-Hour volume)
and #2 (4-Hour volume) were satisfiedwhen using theMarch 200
Preview
FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015 NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022 Suffolk County Department of Public Works Traffic Engineering 335 Yaphank Road Yaphank, NY 11980 Study No. (S/N): CR048-2000-012 UPDATED STUDY MEMORANDUM Location: CR 48,Middle Road at Depot Lane, Cutchogue Request: Upgrade Existing Flasher to 3-Color TrafficSignal Date: December 10,2013, revFebruary 5, 2014 To: Robert F. Hilhnan, Jr.Traffic Engineer III From: PatriciaRalph, Traffic Technician III REQUEST: Correspondence from the Town of Southold, dated 12/30/99and twoletters from individual residents, dated 6/23/01and 8/22/02,requestthata study be done to consider the installation of traffic a 3-color signal to replacethe existing flasher at the above-referred intersection. Preliminarytechnicalmemorandum dated January 4, 2013rev,completed this study subjectto a recommendationfor further data collection, review and analysis.Furtherdata collection, review and analysis has been completed recommended. as previously EXISTING CONDITIONS/OBSER,VATIONS: CR 48,Middle Road, is classified as an Urban Principal having Arterial, two lanes in each direction with additional lanes for auxiliary right and leftturnmovements. Opposing and right-turns left-turn on CR 48 are channelizedand delineated with pavement markings. CR 48 maintainsa grass/vegetated median, 20'-30' 7' approximately wide and roadway shouldersat approximately wide. north Traffic, and southon Depot Lane, is controlled withstop signsat the intersection with CR48. In addition, asupplemental flasher is presentwithred indications facingDepot Lane and amber indications facingCR 48. This segment of CR 48 is straight and level in proximityto the intersection with a slight horizontal curve to the north, beginning 600' approximately east of the intersection. The stoppingsight at 55 miles distance required per houris 495' 570' reconunended at or at 60 miles per hour,and is available to motorists west travelling on CR 48 to avoid conflicts with vehicles south on Depot La,(which is the inside of thecurve wheresightlines would be less than the otherapproaches).Vehicle vohunes on this approach less than those are substantially on the northbound approach. Depot La. is a two lane,two-way roadway witha full barriercenter line south of CR 4 8 and stop lines on each approach toCR 48. Bothroadways straight are generally and level with sight sufficient distanceon allapproaches. In proximityto Depot Lane,the nearest signals traffic along 0.63 miles CR 48 are approximately to the east (Cox Lane) and 2.66miles to the west (Wickham Avenue). ACCIDENTS: UPDATED DATA REVIEW & ANALYSIS Latestavailablethreeyear(36 months) accident August history; 31, 2009through August 31, 2012is compiled below. We note the more currentaccident from history the Town of Southold(outsideSCPD). 1 FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015 NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022 YEAR Right Ped* LeftTurn Rear Other om-to An le O osin End 2009-2010 1 0 0 0 2 2010-2011 2 0 0 0 0 2011-2012 2 0 0 0 3 *Pedestrian The crashdata above shows a greater injuryrate (70%)thanprior provided crash data (44%) in the earlier techmemo dated January 4, 2013. Seven (7)oftheten (10)reportedcrashesincurred and one injuries in a fatality. crash resulted Allseven of these crashes involved north of a vehicle the action on DepotLa. the right-of-way violating of a vehicle traveling alongCR 48. The quantity does not of crashes reported satisfythe crash experience criteria (TrafficSignalWarrant #7),as the principal the reason to consider of installation a traffic signal.However, 70 percentofthe crashtypesreportedmay becorrectablewiththe metallationof a traffic signal. STUDIES: UPDATED DATA REVIEW & ANALYSIS A turning movement count was conductedon May 23, 2012during the highest peak hours early evening between 3pm -5pm when the minor street(DepotLane)experiences the most activity. traffic Thisdata was referencedto approximatethe percentturningmovements in the northbound at the intersection direction.The data indicates thatapproximately40 % of the approachvolume turn made a left and 40% made a right turnand the remaining20% wentstraight,This the effects data was used to consider of right turnsfrom the northbound(higher)approach volume. A spot speedstudy was conducted on April 5, 2012 at a location approximately280 it.east of Depot La. indicatingthe85th speed percentile foreastboundand westbound traffic is65 mph and 61 mph, respectively.The postedspeed limitis 55 MPH. 24-hour, 7-daytrafficvolume counts wereconducted in July2013 along DepotLa.at a point 100' approximately southofCR 48. Thisdatashowed thattheaverageweekday traffic (AWDT) was approximately 1,446vehicles,northbound onlyon Depot La. volume traffic counts wereconducted in July2013 La. at a point · 24-hour, 7-day along Depot 500' approximately north ofCR 48.This datashowed thattheaverageweekday traffic (AWDT) was approximately 467 southbound vehicles, only on DepotLa. 24-hour, 7-day traffic volume counts wereconducted in August 2012 along 1.4 CR 48 at a point miles west of DepotLa. The data collected showed that the average weekday traffic (AWDT) was approximately 13,860 7,011 vehicles; eastbound vehicles and 6,849 vehicles westbound. This AADT is. slightlyless than the 14,674 vehicles(AADT) recorded at this same locationin 2009. Intersectionsightdistancewas reviewed on April12, 2012during a filed which visit, revealed that sight distanceis adequatewithno issues fromany approach in any direction. Itis noted that the higher volume sidestreetapproach to CR 48 is located on the outsideofa verylarge curve horizontal withadequate sight linesineach direction.The most sensitive sightdistanceside would street approach be the generally southbound approach (insideof verylargehorizontal curve) lookingtoward Scaled the east. distanceoff aerialphotography shows thatapproximately750 ft.is available from point a departure the 14.5 ft. from nearesttravellanelooking east. The vehicledeparturepoint was determinedin accordancewith establishedguidelinespublishedby AASHTO and ITE. All otherapproacheswould have greatersight distancesavailable.The availablesight distance (750 exceeds the recommended ft.) sight 645 f t. stopping distancefor vehicles travelingalongCR 48 ata speedof 65mph. Subsequent toafieldinspectionon January 14, 2014 that available it is confirmed intersectionsightdistance (over exceeds 1000 feet) recommended stoppingsightdistanceon all approaches and in all directions. Trafficsignalanalyses were conductedusing the August2012 hourly volumesrecorded alongCR 48 and the July2013 hourlyvolumes collected along Depot La. The results that indicate signal traffic warrants#1 (8-Hour volume), #2 (4-Hourvolume) and #3 (PeakHour Volume) were In satisfied. addition,an analysis was done thatconsidered of right the effects turnson the highervolume approach. minor-street The effectsof right turn vehiclesatthestudy were intersection considered.Consideringthe effects of northbound Depot La. rightturnsat the intersection; 60% of the northbound volume traffic was used as the approach volume on the highervolume minor-street. This scenarioeliminates movements all the right-turn from the approachvolumes used in.thesignalwarrantanalysis. As a result, onlythe 8-Hourvolume warrant 2 FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015 NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022 is satisfied. When halfof the right turnvolume is added to the through and left turnvolume on the higher volume minor-streetapproach (80% northbound approachvolume) traffic signalwarrants#1 and #2 are satisfied. CONCLUSIONS: UPDATED Allprevious recommendations from technicalmernorandum dated April 4, 2012,last revised January 4, 2013have been carriedout. A request forsign maintenancewas forwardedto work crewsas approvedon November 14, 2012and revisedon January4, 2013. Thiswork was completed on January9, 2013. A request for pavementmarking maintenancewas forwarded to Countyengineeron April11, 2012. County records indicate that this work was completed on August 17, 2012. A requestfor speedenforcement was forwarded Police Department to the Southold on or about November 15, 2012. Updated volume traffic data (7-Days, 24-Hours) was collected (ATR) in July 2013 along DepotLane to recordvehiclevolumes north traveling andsouth approachingCR 48. Updated trafficvolume data has beencollated and evaluated. Signal Traffic Warrantanalyses have been conducted usingthisdata. Crash data updateshavebeen included above.70% of the reported crashes maybe of the type correctablewitha traffic signal.However, thequantityof crashesdoesnotsatisfythe criteria recommended for Traffic Signal Warrant#7, Crash Experience,when consideringthe installation of a traffic controlsignal. The existingtraffic signal provides flasher a visual indicationof the potential for traffic on activity approach to the intersection within thisrural setting. Updated traffic signalwarrant analysesindicate that traffic signalwarrants#1 (8-Hourvolume), #2 (4- Hour volume) and #3 (Peak Hour Volume) were satisfied when usingthe August 2012 volume along CR 48 and the July2013 volume along Depot La. Itappears that a traffic signalmay be considered. Considering the effects of northboundDepot La.rightturnsat the intersection; 60% of the northbound traffic yolume was used as the approachvolume on the higher volume minor-street. This scenario eliminatesall the right-turn movements from the approachvolumes warrant used in the signal analysis. As a result, onlythe 8-Hour volume warrantis satisfied. Consideringthe effectsof northboundDepot La. right turns 80% at the intersection; of the northbound volume traffic was used as the approachvolume volume on the higher minor-street.Thisscenario includeshalfof the right-turn volume along withthe through northbound and left turn approach volume used in the signal warrantanalysis. As a result, #1 and #2 were signal warrants traffic satisfied. Itis notedin the MUTCD that satisfaction ofa signal warrant or warrants shallnot,in itself, require the installation control of a traffic signal. Itis notedthatall threeof the 5-year projectedvehiclevolume warrantsare satisfied 100% utilizing and 80% of the higher volume minor-street northbound approach. This engineeringstudyconcludes thatin accordancewithguidelines in the 2009 established Pederal Manual on Traffic Control Devices(MUTCD) and 2011New York State Supplementto the MUTCD and applyingengineeringjudgment when consideringthe installation of a new traffic control signal,a traffic controlsignalis not acommended at this time. RECOMMENDATIONS: UPDATED " Provide request a written to the SoutholdPoliceDepartment for selective enforcement of the posted.,-- 9 speed limit. Consider a future capitalproject that addresses the reduction speed along of vehicle CR 48 if enforcement does not yield favorableresults. Signal" " .Consider a future capitalproject to considerthe upgradeof the existing "Flasher at this intersection, includingevaluation of accidentdata and spot to determine speed study results ifa traffic controlsignalis needed to improve traffic safetyat this intersection. " Close case. 3 FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015 NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022 Suffolk County Department of Public Works Traffic Engineering 335 Yaphank Road Yaphank, NY 11980 Study No. (S/N): CR048-2000-012 Location: CR 48 (Middle Rd.) at Depot Lane, Cutchogue Request: Upgrade Existing Flasher to 3-Color Traffle Signal Date: April 4, 2012, revJuly 11, 2012; rev 1/4/13 To: Robert F. Hillman,Jr. TrafficEngineer IH From: PatriciaRalph, TrafficTechnician m REQUEST: Correspondence from the Town of Southold, dated 12/30/99 and two lettersfrom individual residents,dated 6/23/01 and 8/22/02, request thata study be done toconsider the installation of a 3-color trafficsignalto replacethe existingflasher above-referred at the intersection. EXISTING CONDITIONS/OBSERVATIONS: CR 48, Middle Road, as an is classified Urban Principal Arterial,having two lanes ineach directionwith additionalauxiliarylanes forright and leftturnmovements. Opposing left-turn and right-turns on CR 48 are channelized and delineated with pavement markings. CR 48 20'-30' maintains a grass/vegetated median, approximately wide and roadway shoulders at 7' approximately wide. The intersectionofCR 48 and Depot La. iscontrolledwith stop signs controlling traffic north and south on Depot La. A supplemental trafficcontrol,consistingof a flasher with redindicationsfacing Depot La. and amber indicationsfacingtrafficon CR 48, operates at thisintersection. Depot La. isa two lane,two-way roadway with a fullbarriercenter linesouth ofCR 48 and stop lineson each approach to CR 48. Both roadways are generallystraightand levelwith sufficient sightdistance on allapproaches. The nearesttrafficsignalsalong CR 48 in proximity to Depot La. include Cox La., approximately 0.63 milesto theeast and Wickham Ave., approximately 2.66 miles to thewest. ACCIDENTS: Latestavailable threeyear (36 months) accident history(September 29, 2008 through September 30, 2011) Right Ped* Left Turn Rear Other __________ Anagle O osin End 2008-2009 0 0 1 I 2 . *Pedestrian 1 FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015 NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022 As indicated above, thereare insufficientcrashfrequencies and severitythatjustify,as the principalreason, the installation of a traffic signalrelativetoMUTCD Warrant # 7 Crash Experience. STUDIES: A turning movement count was conducted on May 23,2012 during thehighest earlyevening peak hours between 3 - 5 PM when the minor street (Depot Lane) experiences the most traffic activity. This data was consistent withthe vehicle volumes along CR 48 and Depot La. recorded on each roadway in March 2009. In addition,northbound Depot La. higher is the volume minor street approach with 40% and 42% of theapproaching traffic(203 vehicles,totalin2 brs)making lefts and rights,respectively. The southbound approaching traffic (73 vehicles,totalin 2 hrs)has 51% making rightsand approximately 19% making lefttums. Leftturns from westbound CR 48 make up approxirnately 8% ofthe approaching traffic with a totalof95 vehicles over a two hour (3:00pm to 5:00pm) period. It isnoted thatsignificantpercentage increases intrafficvolumes similar tothose recorded on CR 48 may be expected on Depot La. duringthe summer months. A spot speed study was conducted on April 5,2012 at a location approximately 280 ft.eastof Depot La. indicatingthe 85th percentilespeed for eastbound and westbound trafficis65 mph and 61 mph, respectively. The posted speed limitis 55 MPH. This was verified NYSDOT ine- by mail dated Dec. 3, 2012.It appears thata significantvolume ofmotorists travelat a speedgreater than the postedspeed limitand selective enforcement should be considered. 24-hour, 7-day traffic volwne counts were conducted inMarch 2009 along Depot La. at a point immediately north and south of CR 48. This data showed that theaverage weekday traffic (AWDT) was approximately 1,553 vehicles along Depot La. Seventy-two percent(72%) ofthat volume travelsnorthbound approaching CR 48 from the south. The remaining 28% of traffic approaches from the north. 24-hour, 7-day traffic volume counts were conducted inMarch 2009 along CR 48 at a point immediately eastand west ofDepot La. This data showed thatthe average weekday traffic (AWDT) was approximately 12,160 vehicles along CR 48. Fifty-two percent (52%) ofthat volume travelseastbound approaching Depot La. from the west. The remaining 48% of traffic approaches from the east. 24-hour, 7-day traffic volume counts were conducted in August 2009 along CR 48 at a point1.4 miles west of Depot La. This study showed that theaverage weekday traffic (AWDT) was approximately 18,100 vehicles. Itisnoted that therewas increase a significant in traffic volumes along CR 48 in August (from March) most likelydue to theseasonal fluctuationassociatedwith the characterof the North Fork of Suffolk County. Trafficsignal analyses were conducted using the March 2009 volumes and the August 2009 volumes recorded along CR 48. The same March 2009 volumes along Depot La. were used for each analysis. The resultsindicate thattrafficsignalwarrants #1(8-Hour volume) and #2 (4-Hour volume) were satisfiedwhen using theMarch 2009 volume along CR 48. Traffic signalwarrants #1, #2 & #3(Peak-Hour volume) were satisfiedwhen the August 2009 volumes along CR 48, were used. The laterwarrant #3 is usuallyapplicable in unusualcases where the discharge ofa large quantity of vehiclesoccurs in one hour. This study considered the effectsofright turnvehicles at thestudy intersection.The two-hour turning movement count during thepeak period (3-5pm) resulted in42 percent ofthe Depot Lane approach volumes making right turns. These rightturnsare channelized and a separate utilize acceleration lane on CR 48 to merge withthe two eastbound through lanes. The remaining 58% of vehicles made a left or went straightthrough the intersection.A trafficsignalwarrant evaluation was done to determine the results of using 58% ofthe weekday average higherside streetapproach volumes. 2 FILED: SUFFOLK COUNTY CLERK 11/18/2022 09:51 AM INDEX NO. 611214/2015 NYSCEF DOC. NO. 1106 RECEIVED NYSCEF: 11/18/2022 CONCLUSIONS: Sign and pavement marking maintenance is neededat and near thisintersection. There are insufficient crash frequencies and severitythatjustify,asthe principalreason, the installationof a traffic signalrelative.toMUTCD Warrant # 7 Crash Experience. The 85 percentilespeed for eastbound and westbound trafficis 65 mph and 61 mph, respectively,which appears to be significantly higher than theposted 55 mph speed limit. The existingtrafficsignalflasherprovides a visualindication of the potential fortraffic activityon approach to theintersectionwithin thisruralsetting. Traffic signalwarrant analysis resultsindicatethattrafficsignalwarrants #1 (8-Hour volume) and #2 (4-Hour volume) were satisfiedwhen using theMarch 200