Accident Analysis Report - New York State Department of ......the 0.9-mile study corridor during the three-year analysis period. The accident records from these two sources are summarized

ACCIDENT ANALYSIS

PIN 011252

NYS 110: PRIME AVENUE – YOUNG’S HILL ROAD

Drainage and Roadway Improvements

Accident records for the most recent three-year period available, January 2000 to December 20021, from the New York State Department of Transportation (NYSDOT) Safety Information Management System (SIMS) and the New York State Department of Motor Vehicles police accident reports were used to conduct the accident analysis for NY 110 (New York Avenue), from Prime Avenue to Young’s Hill Road from Reference Marker [RM] 110 0701 1150 – 1159, a distance of 0.93 miles (1.50 Km, including a 0.5 km south of Prime Avenue) in the Town of Huntington. The NYSDOT SIMS and the more detailed police record systems reported a respective total of 44 and 58 accidents within the 0.9-mile study corridor during the three-year analysis period. The accident records from these two sources are summarized in Tables 1 and 2.

1 The analysis was done based upon the accident data available at the time. Subsequently, more recent data (NYSDOT SIMS Accident Severity Summary from April 1, 2004 thru March 31, 2007) has been received and reviewed. To ensure consistency, a comparison with the previous accident summary (NYSDOT SIMS Accident Severity Summary from January, 2000 thru December 2002) was conducted. The results indicated no significant changes in the data; therefore no additional analyses are required

Fatal Injure PDO Total

Intersection 0 8 15 23 10 33

Midblock 0 6 15 11 0 11

Total 0 14 30 34 10 44

Percent of Total 0% 32% 68% 77% 23% 100%

Total

Accidents

Non-Rep.

Accidents

Table 1

SUMMARY OF ACCIDENT FREQUENCY AND SEVERITY

Reportable Accidents

NYSDOT SAFETY INFORMATION MANAGEMENT SYSTEM DATA

Location


Intersection 0 7 37 44 6 50

Midblock 0 2 6 8 0 8

Total 0 9 43 52 6 58

Percent of Total 0% 16% 74% 90% 10% 100%

Total

Accidents

Non-Rep.

Accidents

Table 2

SUMMARY OF ACCIDENT FREQUENCY AND SEVERITY

Reportable Accidents

POLICE ACCIDENT REPORTS

Location

The police reports are more detailed than the NYSDOT SIMS data; therefore, the following discussion will be based upon the police accident data2. Overall, this section of NYS Route 110 experienced 58 accidents. Of that, 50 (86%) accidents took place at or near an intersection and 8 (14%) accidents took place at mid-block locations. The overall accident rates are given in the table below:

Intersection accident rates were computed from the number of accidents and the average annual daily traffic (AADT) volume. Accident rates are described in terms of the number of accidents per million entering vehicles (acc/MEV) for intersections and per million vehicle miles (acc/MVM) for roadway segments between intersections. The computed accident rates are then compared with the mean accident rates reported by NYSDOT for various intersection and facility types.

2 The study in the DR/EA is based on the NYSDOT accident data.

Rate Type CalculationRate

acc/mvm

Rate

acc/mvkm

Statewide

Average

acc/mvm

Statewide Average

acc/mvkm

Overall58 x 10^6

0.9 x 3 x 365 x 129504.54 2.82 3.94 2.45

Wet Road(12 - 6*) x 10^6

0.9 x 3 x 365 x 129500.47 0.29 0.50 0.31

Fixed Object3 x 10^6

0.9 x 3 x 365 x 129500.24 0.15 0.28 0.17

Injury 9 x 100 = 15.51%

- -Statewide %

35.66-

Fatal - - - - -

PDO + NR (43 + 6) x 100 = 84.48%

- -Statewide %

64.01-

* Denotes subtraction of non-reportable accidents, to better compare with NYS accident rates

Table 3

OVERALL ACCIDENT RATES

58

58

Severity Distribution:

As shown on Table 2, of the total 58 accidents, there were zero facilities, 9 (16%) non-fatal injuries, 43 (74%) property damage only, and 6 (10%) non-reportable accidents. A non-reportable accident is one where no injuries occur and the estimated damage cost is less than $1,000. Pavement Conditions:

As shown on Table 4, of the 58 accidents, 35 (60.3%) took place during dry pavement conditions, 6 (10.3%) took place in icy pavement conditions, 13 (22.4%) took place during wet pavement conditions, and 4 (6.9%) took place during unknown pavement conditions.

Light Conditions:

As shown on Table 5, of the 58 accidents, and 42 (72.4%) took place during daylight times, and 16 (27.6%) took place during night times.

Location Dry Icy Wet Unknown Total

Intersection 29 6 11 4 50

Midblock 6 0 2 0 8

Total 35 6 13 4 58

Percent of Total 60.3% 10.3% 22.4% 6.9% 100.0%

Table 4

SUMMARY OF PAVEMENT CONDITIONS

Overall Accident Types:

The predominant accident types were rear ends (17.2%), right angle (17.2%), overtaking (15.5%), and accidents involving vehicles backing (8.6%) and parked vehicles (8.6%). In addition, the majority of the accidents, 32 accidents (55.2%), occurred between the hours of 10 AM and 7 PM. Of the total accidents 46.3% and 25.9% of the vehicles were traveling north and southbound, respectively.

Fixed Object Accidents:

Within the project limits, 3 (5.2% of the total) fixed object accidents took place. Based on the descriptions, two of the three accidents were noted as property damage only and one as a non-reportable accident. Two of the fixed object accidents each involved a vehicle traveling northbound on NYS Route 110 losing control and striking a pole, the third involved a vehicle traveling southbound striking a tent while making a right turn into a car wash. All three accidents occurred during daylight hours with two accidents occurring during dry pavement conditions and the third during wet pavement conditions.

Intersection Day Night Unknown Total

Intersection 38 12 0 50

Midblock 4 4 0 8

Total 42 16 0 58

Percent of Total 72.4% 27.6% 0.0% 100.0%

Table 5

SUMMARY OF LIGHT CONDITIONS

Number % Number % Number %

Overtaking 9 18.0% 0 - 9 15.5%

Rear End 9 18.0% 1 12.5% 10 17.2%

Righ Angle 9 18.0% 1 12.5% 10 17.2%

Left Turn 3 6.0% 1 12.5% 4 6.9%

Pedestrian** 1 2.0% 1 12.5% 2 3.4%

Fixed Object 3 6.0% 0 - 3 5.2%

Head-On 0 0.0% 0 - 0 -

Side Swipe 2 4.0% 0 - 2 3.4%

Bicycle 0 0.0% 0 - 0 -

Right Turn 1 2.0% 0 - 1 1.7%

Driveway 0 0.0% 0 - 0 -

Backing 4 8.0% 1 12.5% 5 8.6%

Parked Vehicle 4 8.0% 1 12.5% 5 8.6%

Other 5 10.0% 2 25.0% 7 12.1%

Unknown 0 0.0% 0 - 0 -

Total 50 100.0% 8 100.0% 58 100.0%

** There were no five or more pedestrian accidents per year at the study intersections or midblock locations during the study period

Accidents

Accident Type

Table 6

SUMMARY OF COLLISION TYPES

Intersection Midblock Overall

Pedestrian Accidents:

A total of 2 (3.4% of the total) pedestrian accidents took place within the project limit. One accident took place on a Saturday at 12:20 PM and involved a pedestrian crossing along NYS Route 110, was then struck by a northbound vehicle. Based on the police accident report, the apparent contributing factor of the driver was described as “alcohol involvement”. The other accident occurred on a Tuesday afternoon at 4:40 PM at a gasoline station located on the northwest corner of the intersection of NYS Route 110 and Mill Lane. This accident involved a vehicle backing-up and striking the gas attendant on the lower right leg. Based on the police accident report, the apparent contributing factors of the driver were described as “driver inattention and unsafe speed”.

Bicycle Accidents:

Within the project limits, no bicycle accident occurred.

Fatal Accidents:

Within the project limits, no fatal accident occurred.

Priority Investigation Locations:

There is a Priority Investigation Location (PIL) identified for this project limit, reference markers [RM] 110 0701 1153 to 110 0710 1157. Within these [RM] there are 4 intersections, although discussed separately further on this report, they are grouped together here for the purpose of clarifying the PIL. This group of intersections from Hill Place to Grist Mill Lane had a total of 24 (42%) accidents. The tables below summarize the accidents by type, accident severity, and pavement condition that occurred within the PIL segment.

Intersection Overtaking Rear End Right Angle Left Turn Fixed Object Right Turn BackingParked

VehicleOther Total

Hill Place 0 0 1 1 0 1 0 1 1 5

Creek Road 3 2 1 0 0 0 4 0 2 12

Mill Dam Road 1 1 0 1 0 0 0 0 1 4

Grist Mill Road 0 1 0 0 1 0 0 1 0 3

Total 4 4 2 2 1 1 4 2 4 24

Percent of Total 17% 17% 8% 8% 4% 4% 17% 8% 17% 100%

NYS Route 110 (New York Avenue) at

Table 7a

SUMMARY OF COLLISION TYPES BY INTERSECTION

Accident Severity: 4 (17%) involved non-fatal injury, 17 (71%) involved property damage only, and 3 (13%) involved non-reportable. Pavement Condition: of the 24 accidents, 14 (58%) took place during dry pavement conditions, 2 (8%) took place in icy pavement conditions, 5 (21%) took place during wet pavement conditions, and 3 (13%) took place during unknown pavement conditions.

Summary of Intersections:

Within the project limits, from Prime Avenue-Madison Street to Young’s Hill Road, there are 9 intersections, which include 5 signalized intersections and 4 unsignalized intersections. Of the 5 signalized intersections, the intersection of NYS Route 110 and Grist Mill Lane has a flasher and a stop sign on Grist Mill Lane. The following are summaries of each intersection along NYS Route 110 at: Prime Avenue-Madison Street:

As shown on the tables below, a total of 10 accidents occurred at or near this intersection.


Hill Place 0 0 4 4 1 5

Creek Road 0 2 10 12 0 12

Mill Dam Road 0 2 1 3 1 4

Grist Mill Road 0 0 2 2 1 3

Total 0 4 17 21 3 24

Percent of Total 0% 17% 71% 88% 13% 100%

Table 7b

SUMMARY OF ACCIDENT FREQUENCY AND SEVERITY BY INTERSECTION


Non-Rep.

Accidents

Total

Accidents

Reportable AccidentsIntersection

Intersection Dry Icy Wet Unknown Total

Hill Place 4 1 0 0 5

Creek Road 5 0 5 2 12

Mill Dam Road 2 1 0 1 4

Grist Mill Road 3 0 0 0 3

Total 14 2 5 3 24

Percent of Total 58.3% 8.3% 20.8% 12.5% 100.0%


Table 7c

SUMMARY OF PAVEMENT CONDITIONS BY INTERSECTION

Accident Severity: 1 (10%) involved non-fatal injury, 7 (70%) involved property damage only, and 2 (20%) involved non-reportable. The predominant accident types at this location were rear ends (30%) and overtaking (30%). Pavement Condition: of the 10 accidents, 6 (60%) took place during dry pavement conditions, 3 (30%) took place in icy pavement conditions, and 1 (10%) took place during unknown pavement conditions. Light Condition: of the 10 accidents, 8 (80%) took place during daylight times and 2 (20%) took place during night times.


Prime Avenue-Madison Street 0 1 7 8 2 10

Total 0 1 7 8 2 10

Percent of Total 0% 10% 70% 80% 20% 100%

Table 8



Non-Rep.

Accidents

Total

Accidents



Prime Avenue-Madison Street 6 3 0 1 10

Total 6 3 0 1 10

Percent of Total 60.0% 30.0% 0.0% 10.0% 100.0%


Table 10


Intersection Overtaking Rear EndRight

AnglePedestrian** Side Swipe Other Total

Prime Avenue-Madison Street 3 3 1 1 1 1 10

Total 3 3 1 1 1 1 10

Percent of Total 30% 30% 10% 10% 10% 10% 100%

** There were no five or more pedestrian accidents per year at the study intersections during the study period


Table 9


Based on further investigation it is evident that the accidents at or near this location can be attributed to limited visibility of vehicular movement, caused by local curb side parking and obstructed traffic flow from vehicles making left turns across opposing lanes of NY 110.

Mill Lane:


Accident Severity: 2 (29%) involved non-fatal injury, 4 (57%) involved property damage only, and 1 (14%) involved non-reportable. The predominant accident types at this location were right angle (57%). Pavement Condition: of the 7 accidents, 1 (14%) took place during dry pavement conditions and 6 (86%) took place during wet pavement conditions. Light Condition: of the 7 accidents, 4 (57%) took place during daylight times, and 3 (43%) took place during night times.


Prime Avenue-Madison Street 8 2 0 10

Total 8 2 0 10

Percent of Total 80% 20% 0% 100%


Table 11

SUMMARY OF LIGHT CONDITIONS BY INTERSECTION


Mill Lane 0 2 4 6 1 7

Total 0 2 4 6 1 7

Percent of Total 0% 29% 57% 86% 14% 100%

Table 12



Non-Rep.

Accidents

Total

Accidents



Mill Lane 4 3 0 7

Total 4 3 0 7



Table 15


Intersection OvertakingRight

Angle

Fixed

ObjectSide Swipe Total

Mill Lane 1 4 1 1 7

Total 1 4 1 1 7

Percent of Total 14% 57% 14% 14% 100%


Table 13



Mill Lane 1 0 6 0 7

Total 1 0 6 0 7

Percent of Total 14.3% 0.0% 85.7% 0.0% 100.0%


Table 14


Based on further investigation it is evident that the accidents at or near this location can be attributed to restricted sight distance caused by fences and tress located at the corners of the intersection.

Hill Place:

As shown on the tables below, a total of 5 accidents occurred at or near this intersection. Accident Severity: 4 (80%) involved property damage only and 1 (20%) involved non-reportable. There was no predominant accident type at this location. Pavement Condition: of the 5 accidents, 4 (80%) took place during dry pavement conditions and 1 (20%) took place in icy pavement conditions. Light Condition: of the 5 accidents, 3 (60%) took place during daylight times and 2 (40%) took place during night times.



Total 0 0 4 4 1 5

Percent of Total 0% 0% 80% 80% 20% 100%

Table 16



Non-Rep.

Accidents

Total

Accidents


IntersectionRight

AngleLeft Turn Right Turn

Parked

VehicleOther Total


Total 1 1 1 1 1 5

Percent of Total 20% 20% 20% 20% 20% 60%


Table 17


No observable or correctable causes could be found.

Creek Road:


Accident Severity: 2 (17%) involved non-fatal injury and 10 (83%) involved property damage only. The predominant accident types at this location were overtaking (25%) and accidents involving vehicles backing (33%). Pavement Condition: of the 12 accidents, 5 (42%) took place during dry pavement conditions, 5 (42%) took place during wet pavement conditions, and 2 (16%) took place during unknown pavement conditions. Light Condition: of the 12 accidents, 10 (83%) took place during daylight times and 2 (17%) took place during night times.


Hill Place 4 1 0 0 5

Total 4 1 0 0 5

Percent of Total 80.0% 20.0% 0.0% 0.0% 100.0%


Table 18



Hill Place 3 2 0 5

Total 3 2 0 5



Table 19


This intersection is within the parameters of the PIL. This intersection is signalized and located just south of Mill Dam Road, which is a complex multi-legged and multi-


Creek Road 0 2 10 12 0 12

Total 0 2 10 12 0 12

Percent of Total 0% 17% 83% 100% 0% 100%

Table 20



Non-Rep.

Accidents

Total

Accidents



AngleBacking Other Total

Creek Road 3 2 1 4 2 12

Total 3 2 1 4 2 12

Percent of Total 25% 17% 8% 33% 17% 100%


Table 21



Creek Road 5 0 5 2 12

Total 5 0 5 2 12

Percent of Total 41.7% 0.0% 41.7% 16.7% 100.0%


Table 22



Creek Road 10 2 0 12

Total 10 2 0 12



Table 23


signalized intersection. Creek Road and Park Avenue is utilized as a by-pass roadway by the patrons of the business area of NYS Route 110. The accidents at this location can be attributed to the characteristics of Creek Road and its proximity to Mill Dam Road.

Mill Dam Road:


Accident Severity: 2 (50%) involved non-fatal injury, 1 (25%) involved property damage only, and 1 (25%) involved non-reportable. There was no predominant accident type at this location. Pavement Condition: of the 4 accidents, 2 (50%) took place during dry pavement conditions, 1 (25%) took place in icy pavement conditions, and 1 (25%) took place during unknown pavement conditions. Light Condition: of the 4 accidents, 3 (75%) took place during daylight times and 1 (25%) took place during night times.

Intersection Overtaking Rear End Left Turn Other Total


Total 1 1 1 1 4

Percent of Total 25% 25% 25% 25% 100%


Table 25



Mill Dam Road 0 2 1 3 1 4

Total 0 2 1 3 1 4

Percent of Total 0% 50% 25% 75% 25% 100%

Table 24



Non-Rep.

Accidents

Total

Accidents



Grist Mill Lane:


Accident Severity: 2 (67%) involved property damage only and 1 (33%) involved non-reportable. There was no predominant accident type at this location. Pavement Condition: all 3 accidents took place during dry pavement conditions. Light Condition: All 3 three accidents took place during daylight times.



Total 2 1 0 1 4

Percent of Total 50.0% 25.0% 0.0% 25.0% 100.0%


Table 26



Mill Dam Road 3 1 0 4

Total 3 1 0 4



Table 27




Grist Mill Road 0 0 2 2 1 3

Total 0 0 2 2 1 3

Percent of Total 0% 0% 67% 67% 33% 100%

Table 28



Non-Rep.

Accidents

Total

Accidents


Intersection Rear EndFixed

Object

Parked

VehicleTotal

Grist Mill Road 1 1 1 3

Total 1 1 1 3



Table 29



Grist Mill Road 3 0 0 0 3

Total 3 0 0 0 3

Percent of Total 100.0% 0.0% 0.0% 0.0% 100.0%


Table 30



Grist Mill Road 3 0 0 3

Total 3 0 0 3



Table 31


Katewomoke Drive:


Accident Severity: all 7 accidents involved property damage only. The predominant accident types at this location were rear ends (29%). Pavement Condition: of the 7 accidents, 6 (86%) took place during dry pavement conditions and 1 (29%) took place in icy pavement conditions. Light Condition: of the 7 accidents, 5 (71%) took place during daylight times and 2 (29%) took place during night times.


Katewomoke Drive 0 0 7 7 0 7

Total 0 0 7 7 0 7

Percent of Total 0% 0% 100% 100% 0% 100%

Table 32



Non-Rep.

Accidents

Total

Accidents



AngleLeft Turn

Fixed

Object

Parked

VehicleTotal

Katewomoke Drive 1 2 1 1 1 1 7

Total 1 2 1 1 1 1 7

Percent of Total 14% 29% 14% 14% 14% 14% 100%


Table 33



Young’s Hill Road:


Accident Severity: all two accidents involved property damage only. There was no predominant accident type at this location. Pavement Condition: all 2 accidents took place during dry pavement conditions. Light Condition: All 2 accidents took place during daylight times.


Katewomoke Drive 6 1 0 0 7

Total 6 1 0 0 7

Percent of Total 85.7% 14.3% 0.0% 0.0% 100.0%


Table 34



Katewomoke Drive 5 2 0 7

Total 5 2 0 7



Table 35




Young Hill Road 0 0 2 2 0 2

Total 0 0 2 2 0 2

Percent of Total 0% 0% 100% 100% 0% 100%

Table 36



Non-Rep.

Accidents

Total

Accidents


IntersectionRight

AngleBacking

Parked

VehicleTotal

Youngs Hill Road 1 0 1 2

Total 1 0 1 2



Table 37



Youngs Hill Road 2 0 0 0 2

Total 2 0 0 0 2

Percent of Total 100.0% 0.0% 0.0% 0.0% 100.0%


Table 38



Youngs Hill Road 2 0 0 2

Total 2 0 0 2



Table 39


Overall Observations:

The predominant accident types throughout the project limits on NY Route 110 are rear- end, right angle, overtaking, and parked vehicle accidents. These types of accidents could be attributed to the entering and existing of vehicles via driveways to local business, curb side parking along the project limits, and restricted sight distance (which limits the visibility of vehicular movement. Recommended Improvements:

A similar pattern of accidents have been observed as compared to the previous accident analysis conducted with data from April 1995 to March 1998, therefore; the recommend improvements suggested on the previous study would still apply and are as follows:

• Standardized and re-stripe parking stalls along curbside

• Restrict near corner parking at intersections and driveways

• Improve line striping and channelization between travel lanes and parking/shoulder

• Improve the signal on NYS Route 110 at Prime Avenue on the north- and southbound approaches to include a protected left turn phase

• Define a more concise traffic flow paths at the intersections of Park Avenue, Abbott Drive, Mill Dam Road, and Grist Mill Lane.

In addition, remove sight obstructions at Mill Lane if possible and/or provide warning signs as recommend on the Manual on Uniform Traffic Control Devices (MUTCD) for streets and highways.

ACCIDENT ANALYSIS

SUMMARY PRINOUTS

BACKGROUND DATA

JANUARY 2000 TO DECEMBER 2002

BACKGROUND DATA

April 1, 2004 TO MARCH 31, 2007

Documents

Accident Analysis Report - New York State Department of ......the 0.9-mile study corridor during the three-year analysis period. The accident records from these two sources are summarized