Study Area and Location District PSA Ward ANC Phase Description B Existing 2500 Block Naylor Road Southeast Northbound

Transcription

1 Speed Limit and Safety Nexus Studies for Automated Enforcement Locations in the District of Columbia 25 Block Naylor Road SE Study Area and Location District PSA Ward ANC Phase Description B Existing 25 Block Naylor Road Southeast Northbound Site 19 KEY: Existing Camera Proposed Camera Bus Stop Metro Station Hiker/Biker Trail School Other Pedestrian Generator The existing speed camera is located in Ward 7 at the 25 block of Naylor Road Southeast in the northbound direction. Naylor Road runs between Southern Avenue Southeast to the north and Branch Avenue Southeast to the south. The posted speed limit is 25 MPH. This speed camera was installed on February 21. W7-244 District Department of Transportation 55 M Street, SE, Suite 4 Washington, DC 2

2 25 Block Naylor Road SE Field Assessment Summary Naylor Road is assumed to run in a north-south direction, and is classified as a minor arterial. Naylor Road has one travel lane in each direction. This site has the following characteristics: This is a residential area with apartments on the east side of the street and a bike trail on the west side of the street. There is one school in the area: Naylor Road School. There is sidewalk on both sides of the street and three concrete medians on the block. There are two midblock crosswalks. The pavement is in good condition and there is curb and gutter with drainage inlets. There is a slope downgrade northbound. There are bus stops in both directions midblock and another southbound at Altamont Place. Looking Northbound W7-245 District Department of Transportation 55 M Street, SE, Suite 4 Washington, DC 2

3 25 Block Naylor Road SE Looking Southbound Speed Data Analysis Posted Speed Limit (MPH) 25 Mean Speed (MPH) 9 85th Percentile Speed (MPH) 12 1 MPH Pace Speed 4-1 ADT,228 Both the mean speed and the 85 th percentile speed are lower than the posted speed limit at this location. The 85 th percentile speed is 1 MPH lower than the posted speed limit. Crash Data Analysis From the Accident Summary Report provided for the dates between January 1, 21 and December 1, 212, there were a total of 46 crashes at this location. A breakdown of number of crashes by collision type can be found in the chart on the next page. The most common types of collision at this location were Side Swipe (1 crashes), Rear End (9 crashes) and Right Angle (5 crashes). The other collision types had three crashes or less each. Furthermore, this site experienced a high frequency (18 crashes) of injury-crashes. W7-246 District Department of Transportation 55 M Street, SE, Suite 4 Washington, DC 2

4 25 Block Naylor Road SE Severity Weather Surface condition Light Condition Total 46 Fatal Clear 6 7 Dry 6 7 Day % Injury 18 Rain 5 1.9% Wet 5 1.9% Night 14.4% Bus 4 8.7% Fog/Mist Slush 1 2.2% Taxi 2 4.% 12 Number of Crashes by Collision Type 1 Number of Crashes Right Angle Left Turn Right Turn Rear End Side Swipe Head On Parked Fixed Object Collision Type Pedestrian Backing Non-Collision Unspecified There was an elevated number of speed related crashes at this location, including rear end and side swipe crashes. The Highway Safety Manual lists assuming the lead driver will go through a green or yellow light, but the lead driver stops and changing lanes to avoid a slowing or stopped vehicle 1 as two errors leading to rear end and side swipe crashes. Both of these errors can be decreased with a decrease in travel speed. This speed camera was installed on 2/1/21. A graph showing the breakdown of number of crashes by year for the three years prior to installation, and the year after installation is shown on the next page. There were 2 crashes in the year before installation, following two years of 1 and 11 crashes, respectively. There were 12 crashes in the year after installation. For the three years prior to installation, there were 4, 5, and 9 injury collisions, and two in the year after installation. 1 AASHTO Highway Safety Manual, 1 st Edition, 21; Volume 1, page 2-1 W7-247 District Department of Transportation 55 M Street, SE, Suite 4 Washington, DC 2

5 25 Block Naylor Road SE 25 # Crashes by Year Speed Camera Installed on 2/1/ /1/21-1/1/211 1/1/211-1/1/212 1/1/212-1/1/21 2/1/21-12/1/21 Safety Nexus This site presents the following safety considerations which may establish a nexus between the speed camera and traffic safety. 1. Speed Data The speed data analysis shows travel speeds being lower than the posted speed limit. 2. Crash Data There was an elevated number of speed related crashes at this location, including side swipe and rear end collisions, as well as a high frequency (18 crashes) of injury related crashes. There was a decrease in the number of crashes since the installation of the camera.. Field Assessment The following site characteristics suggest a need for a safer travel environment: a. This is a residential area with apartments. b. There is one school in the area: Naylor Road School. c. There is a bike trail nearby. d. There are several bus stops in the area which generate pedestrian activity. Although the speed data analysis showed the mean and 85th percentile speeds to be lower than the posted speed limit, due to the elevated number of speed-related crashes and injury-related crashes, the specific site characteristics, and pedestrian generators, there is a nexus between traffic safety and the speed camera at this location. W7-248 District Department of Transportation 55 M Street, SE, Suite 4 Washington, DC 2

6 25 block of Naylor Rd SE NB Speed SAMMAT ENGINEERING SERVICES, LLC 1515 RISING RIDGE ROAD MOUNT AIRY, MD NB Start Time Total 11/22/ : : : : : : : : : : : PM : : : : : : : : : : : Total Grand Total th Percentile : 5th Percentile : 85th Percentile : 95th Percentile : 4 MPH 7 MPH 12 MPH 14 MPH Stats Mean Speed(Average) : 9 MPH 1 MPH Pace Speed : 4-1 MPH Number in Pace : 26 Percent in Pace : 8.5% Number of Vehicles > 25 MPH : Percent of Vehicles > 25 MPH : W7-249

7 25 block of Naylor Rd SE NB Volume SAMMAT ENGINEERING SERVICES, LLC 1515 RISING RIDGE ROAD MOUNT AIRY, MD Start Fri 22-Nov-1 Sat 2-Nov-1 Sun 24-Nov-1 Daily Average Time A.M. P.M. A.M. P.M. A.M. P.M. A.M. P.M. 12: 8 51 * * * * : * * * * : 1 49 * * * * : * * * * 4 6 1: 7 1 * * * * 7 1 1: * * * * 5 2 1: 2 41 * * * * : * * * * : 5 9 * * * * 5 9 2:15 8 * * * * 8 2: 4 41 * * * * :45 41 * * * * 41 : 5 49 * * * * 5 49 : * * * * 4 5 : 4 * * * * 4 :45 46 * * * * 46 4: 48 * * * * 48 4:15 51 * * * * 51 4: 6 58 * * * * : * * * * : 9 5 * * * * 9 5 5: * * * * : 15 4 * * * * : * * * * : * * * * : * * * * : * * * * : * * * * : 8 4 * * * * 8 4 7: * * * * : 97 9 * * * * : * * * * : 9 1 * * * * 9 1 8: * * * * : * * * * : * * * * : 49 * * * * 49 9: * * * * : 5 5 * * * * 5 5 9:45 26 * * * * 26 1: * * * * 1: * * * * : * * * * : * * * * : * * * * :15 5 * * * * 5 11: 7 25 * * * * : * * * * 26 2 Total Combined Total Peak 7:15 4: 7:15 4: Vol P.H.F ADT ADT,228 AADT,228 W7-25

8 DC Department of Transportation - Traffic Accident Reporting and Analysis System Accident Summary Report (R-8) Corridor: NAYLOR RD,SE From TWENTY FIFTH ST,SE TO T ST,SE Time Period Covered: From 1/1/21 To 12/1/212 Prepared By: Rahul Jain Prepared Date: 9/15/21 Total Number of Accident: Total Number of Fatalities: Total Number of Injuries: Total Number of Disabling Injuries: Total Number of NonDisabling Injuries: Total Number of Pedestrians Involved: Total Number of Bicycles Involved: Total Number of Motorcycles Involved: Collision Type #ACC % Collision Type #ACC % Right Angle: 5 1.9% Fixed Object: 6.5% Left Turn: 2 4.% Ran Off Road: Right Turn: 6.5% Ped. Involved: 2 4.% Rear End: % Backing: 6.5% Side Swiped: % Non Collision: 1 2.2% Head On: 6.5% Under/Over Ride: Parked: 2 4.% Unspecified: 6.5% Time of Day #ACC % 7: ~ 9:: 6 1.% 9: ~ 11:: 6 1.% 11: ~ 1:: 6 1.% 1: ~ 16:: 4 8.7% 16: ~18:: % 18: ~ 7:: % Unspecified: Day o fweek #ACC % Sunday: % Monday: 2 4.% Tuesday: % Wednesday: 5 1.9% Thursday: % Friday: % Saturday: % Weather Condition #ACC % Clear: 6 7 Rain: 5 1.9% Snow: Sleet/Hail: Fog/Mist: Crosswind/Blowing Sand: Unspecified: 5 1.9% Surface Condition #ACC % Dry: 6 7 Wet: 5 1.9% Snow/Ice: Slush: 1 2.2% Water/Sand: Repairing: Unspecified: 4 8.7% Type of Vehicle #VEH % Passenger Car: % Bus: 4 4.7% Truck: 1 1.2% Taxi: 2 2.% Minivan: Police/Emergency Vehicle: Motorcycle/Moped: 1 1.2% Bicycle: Fixed Object: Unspecified: 7 8.1% Accident Severity Type #ACC % Fatal Collision: Injury Collision: 18 PDO Collision: % Light Condition #ACC % Daylight: % Dawn/Dusk: 1 2.2% Dark(Lighted): 1 2 Dark(Not Lighted): 1 2.2% Dark(Unknown Lighting): Unspecified: 5 1.9% Contributing Factor #VEH % Driver: Speed: 1 1.2% Driver: Alcohol/Drug: 2 2.% Driver: Electronic Device: 1 1.2% Driver: Others: % Vehicle: Roadway: Unspecified: % Pedestrian Actions #ACC % In Crosswalk with Signal: In Crosswalk against Signal: In Crosswalk no Signal: In Unmarked Crosswalk: Not in Crosswalk: 1 25.% From Between Parked Cars: 1 25.% 5 Records are not approved as of 9/15/21 2:54:6 PM W7-251

9 DC Department of Transportation - Traffic Accident Reporting and Analysis System Corridor: Time Period Covered: Accident Summary Report (R-8) NAYLOR RD,SE From TWENTY FIFTH ST,SE TO T ST,SE Total Number of Accident: Total Number of Fatalities: Total Number of Injuries: Total Number of Disabling Injuries: Total Number of NonDisabling Injuries: Total Number of Pedestrians Involved: Total Number of Bicycles Involved: Total Number of Motorcycles Involved: From 1/1/21 To 1/1/ Prepared By: Rahul Jain Prepared Date: 11/2/21 Collision Type #ACC % Collision Type #ACC % Right Angle: % Fixed Object: Left Turn: 1 Ran Off Road: Right Turn: Ped. Involved: 1 Rear End: 1 Backing: % Side Swiped: 2.1% Non Collision: Head On: Under/Over Ride: Parked: % Time of Day #ACC % 7: ~ 9:: 1 9: ~ 11:: % 11: ~ 1:: 4.8% 1: ~ 16:: % 16: ~18:: 2.1% 18: ~ 7:: 1 Unspecified: Day o fweek #ACC % Sunday: % Monday: 1 Tuesday: 1 Wednesday: 1 Thursday: 4.8% Friday: 2.1% Saturday: 1 Weather Condition #ACC % Clear: % Rain: 1 Snow: Sleet/Hail: Fog/Mist: Crosswind/Blowing Sand: Unspecified: 2.1% Surface Condition #ACC % Dry: % Wet: 1 Snow/Ice: Slush: 1 Water/Sand: Repairing: 15.4% Type of Vehicle #VEH % Passenger Car: % Bus: 1 4.% Truck: 1 4.% Taxi: Minivan: Police/Emergency Vehicle: Motorcycle/Moped: Bicycle: Fixed Object: Unspecified: 4 16.% Accident Severity Type #ACC % Fatal Collision: Injury Collision: 4.8% PDO Collision: % Light Condition #ACC % Daylight: % Dawn/Dusk: Dark(Lighted): % Dark(Not Lighted): Dark(Unknown Lighting): Unspecified: 2.1% Contributing Factor #VEH % Driver: Speed: 1 4.% Driver: Alcohol/Drug: Driver: Electronic Device: Driver: Others: 8 2.% Vehicle: Roadway: Unspecified: % Pedestrian Actions #ACC % In Crosswalk with Signal: In Crosswalk against Signal: In Crosswalk no Signal: In Unmarked Crosswalk: Not in Crosswalk: 1 1 From Between Parked Cars: Unspecified: 7 Records are not approved as of 11/2/21 9:52:1 AM W7-252

10 DC Department of Transportation - Traffic Accident Reporting and Analysis System Corridor: Time Period Covered: Accident Summary Report (R-8) NAYLOR RD,SE From TWENTY FIFTH ST,SE TO T ST,SE Total Number of Accident: Total Number of Fatalities: Total Number of Injuries: Total Number of Disabling Injuries: Total Number of NonDisabling Injuries: Total Number of Pedestrians Involved: Total Number of Bicycles Involved: Total Number of Motorcycles Involved: From 1/1/211 To 1/1/ Prepared By: Rahul Jain Prepared Date: 11/2/21 Collision Type #ACC % Collision Type #ACC % Right Angle: 1 Fixed Object: Left Turn: 1 Ran Off Road: Right Turn: 1 Ped. Involved: 1 Rear End: 1 Backing: Side Swiped: 27.% Non Collision: Head On: % Under/Over Ride: Parked: 1 Unspecified: Time of Day #ACC % 7: ~ 9:: 27.% 9: ~ 11:: 11: ~ 1:: 1 1: ~ 16:: 16: ~18:: 1 18: ~ 7:: % Unspecified: Day o fweek #ACC % Sunday: 27.% Monday: 1 Tuesday: Wednesday: Thursday: 1 Friday: 1 Saturday: % Weather Condition #ACC % Clear: % Rain: % Snow: Sleet/Hail: Fog/Mist: Crosswind/Blowing Sand: Unspecified: Surface Condition #ACC % Dry: % Wet: % Snow/Ice: Slush: Water/Sand: Repairing: Unspecified: Type of Vehicle #VEH % Passenger Car: % Bus: 1 4.5% Truck: Taxi: 2 Minivan: Police/Emergency Vehicle: Motorcycle/Moped: Bicycle: Fixed Object: Unspecified: Accident Severity Type #ACC % Fatal Collision: Injury Collision: % PDO Collision: % Light Condition #ACC % Daylight: 7 6.6% Dawn/Dusk: 1 Dark(Lighted): 27.% Dark(Not Lighted): Dark(Unknown Lighting): Unspecified: Contributing Factor #VEH % Driver: Speed: Driver: Alcohol/Drug: 1 4.5% Driver: Electronic Device: Driver: Others: 6 27.% Vehicle: Roadway: Unspecified: % Pedestrian Actions #ACC % In Crosswalk with Signal: In Crosswalk against Signal: In Crosswalk no Signal: In Unmarked Crosswalk: Not in Crosswalk: From Between Parked Cars: 1.% 66.7% 7 Records are not approved as of 11/2/21 9:5: AM W7-25

11 DC Department of Transportation - Traffic Accident Reporting and Analysis System Corridor: Time Period Covered: Accident Summary Report (R-8) NAYLOR RD,SE From TWENTY FIFTH ST,SE TO T ST,SE Total Number of Accident: Total Number of Fatalities: Total Number of Injuries: Total Number of Disabling Injuries: Total Number of NonDisabling Injuries: Total Number of Pedestrians Involved: Total Number of Bicycles Involved: Total Number of Motorcycles Involved: From 1/1/212 To 1/1/ Prepared By: Rahul Jain Prepared Date: 11/2/21 Collision Type #ACC % Collision Type #ACC % Right Angle: 1 5.% Fixed Object: 15.% Left Turn: Ran Off Road: Right Turn: 2 1 Ped. Involved: Rear End: 8 4 Backing: Side Swiped: 15.% Non Collision: 1 5.% Head On: 1 5.% Under/Over Ride: Parked: Unspecified: 1 5.% Time of Day #ACC % 7: ~ 9:: 1 5.% 9: ~ 11:: 15.% 11: ~ 1:: 1 5.% 1: ~ 16:: 1 5.% 16: ~18:: : ~ 7:: 1 5 Unspecified: Day o fweek #ACC % Sunday: 5 25.% Monday: Tuesday: 5 25.% Wednesday: 2 1 Thursday: 4 2 Friday: 15.% Saturday: 1 5.% Weather Condition #ACC % Clear: 16 8 Rain: 2 1 Snow: Sleet/Hail: Fog/Mist: Crosswind/Blowing Sand: 1 Surface Condition #ACC % Dry: 16 8 Wet: 2 1 Snow/Ice: Slush: Water/Sand: Repairing: 1 Type of Vehicle #VEH % Passenger Car: % Bus: 2 5.6% Truck: Taxi: Minivan: Police/Emergency Vehicle: Motorcycle/Moped: 1 2.8% Bicycle: Fixed Object: Unspecified: 6 Accident Severity Type #ACC % Fatal Collision: Injury Collision: 9 45.% PDO Collision: % Light Condition #ACC % Daylight: 9 45.% Dawn/Dusk: Dark(Lighted): 8 4 Dark(Not Lighted): 1 5.% Dark(Unknown Lighting): 1 Contributing Factor #VEH % Driver: Speed: Driver: Alcohol/Drug: 1 2.8% Driver: Electronic Device: 1 2.8% Driver: Others: % Vehicle: Roadway: % Pedestrian Actions #ACC % In Crosswalk with Signal: In Crosswalk against Signal: In Crosswalk no Signal: In Unmarked Crosswalk: Not in Crosswalk: From Between Parked Cars: Unspecified: 14 Records are not approved as of 11/2/21 9:5:48 AM W7-254

12 DC Department of Transportation - Traffic Accident Reporting and Analysis System Corridor: Time Period Covered: Accident Summary Report (R-8) NAYLOR RD,SE From TWENTY FIFTH ST,SE TO T ST,SE Total Number of Accident: Total Number of Fatalities: Total Number of Injuries: Total Number of Disabling Injuries: Total Number of NonDisabling Injuries: Total Number of Pedestrians Involved: Total Number of Bicycles Involved: Total Number of Motorcycles Involved: From 2/1/21 To 12/1/21 12 Prepared By: Rahul Jain Prepared Date: 11/2/21 Collision Type #ACC % Collision Type #ACC % Right Angle: Fixed Object: 2 Left Turn: 1 Ran Off Road: Right Turn: Ped. Involved: Rear End: 2 Backing: 25.% Side Swiped: 2 Non Collision: Head On: Under/Over Ride: Parked: 2 Unspecified: Time of Day #ACC % 7: ~ 9:: 2 9: ~ 11:: 1 11: ~ 1:: 1 1: ~ 16:: 16: ~18:: 25.% 18: ~ 7:: % Unspecified: Day o fweek #ACC % Sunday: 2 Monday: 2 Tuesday: 2 Wednesday: 1 Thursday: 2 Friday: 2 Saturday: 1 Weather Condition #ACC % Clear: 9 75.% Rain: 1 Snow: 1 Sleet/Hail: Fog/Mist: Crosswind/Blowing Sand: Unspecified: 1 Surface Condition #ACC % Dry: 9 75.% Wet: 1 Snow/Ice: Slush: 1 Water/Sand: Repairing: Unspecified: 1 Type of Vehicle #VEH % Passenger Car: % Bus: 1 4.5% Truck: 1 4.5% Taxi: Minivan: Police/Emergency Vehicle: 1 4.5% Motorcycle/Moped: Bicycle: Fixed Object: Accident Severity Type #ACC % Fatal Collision: Injury Collision: 2 PDO Collision: 1 8.% Light Condition #ACC % Daylight: 7 5 Dawn/Dusk: 1 Dark(Lighted): 25.% Dark(Not Lighted): Dark(Unknown Lighting): Unspecified: 1 Contributing Factor #VEH % Driver: Speed: Driver: Alcohol/Drug: Driver: Electronic Device: Driver: Others: % Vehicle: Roadway: 1 4.5% Unspecified: % Pedestrian Actions #ACC % In Crosswalk with Signal: In Crosswalk against Signal: In Crosswalk no Signal: In Unmarked Crosswalk: Not in Crosswalk: From Between Parked Cars: Unspecified: 7 Records are not approved as of 11/2/21 9:54:6 AM W7-255