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Operation of Light Rail Transit through Ungated Crossings at Speeds over 35 MPH (2012)

Chapter: Appendix A: Summary of Crash Data at the Intersections of North First Street and Brokaw Road, Charcot Avenue, and Trimble Road

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Page 89
Suggested Citation:"Appendix A: Summary of Crash Data at the Intersections of North First Street and Brokaw Road, Charcot Avenue, and Trimble Road." National Academies of Sciences, Engineering, and Medicine. 2012. Operation of Light Rail Transit through Ungated Crossings at Speeds over 35 MPH. Washington, DC: The National Academies Press. doi: 10.17226/22822.
×
Page 89
Page 90
Suggested Citation:"Appendix A: Summary of Crash Data at the Intersections of North First Street and Brokaw Road, Charcot Avenue, and Trimble Road." National Academies of Sciences, Engineering, and Medicine. 2012. Operation of Light Rail Transit through Ungated Crossings at Speeds over 35 MPH. Washington, DC: The National Academies Press. doi: 10.17226/22822.
×
Page 90
Page 91
Suggested Citation:"Appendix A: Summary of Crash Data at the Intersections of North First Street and Brokaw Road, Charcot Avenue, and Trimble Road." National Academies of Sciences, Engineering, and Medicine. 2012. Operation of Light Rail Transit through Ungated Crossings at Speeds over 35 MPH. Washington, DC: The National Academies Press. doi: 10.17226/22822.
×
Page 91
Page 92
Suggested Citation:"Appendix A: Summary of Crash Data at the Intersections of North First Street and Brokaw Road, Charcot Avenue, and Trimble Road." National Academies of Sciences, Engineering, and Medicine. 2012. Operation of Light Rail Transit through Ungated Crossings at Speeds over 35 MPH. Washington, DC: The National Academies Press. doi: 10.17226/22822.
×
Page 92
Page 93
Suggested Citation:"Appendix A: Summary of Crash Data at the Intersections of North First Street and Brokaw Road, Charcot Avenue, and Trimble Road." National Academies of Sciences, Engineering, and Medicine. 2012. Operation of Light Rail Transit through Ungated Crossings at Speeds over 35 MPH. Washington, DC: The National Academies Press. doi: 10.17226/22822.
×
Page 93
Page 94
Suggested Citation:"Appendix A: Summary of Crash Data at the Intersections of North First Street and Brokaw Road, Charcot Avenue, and Trimble Road." National Academies of Sciences, Engineering, and Medicine. 2012. Operation of Light Rail Transit through Ungated Crossings at Speeds over 35 MPH. Washington, DC: The National Academies Press. doi: 10.17226/22822.
×
Page 94
Page 95
Suggested Citation:"Appendix A: Summary of Crash Data at the Intersections of North First Street and Brokaw Road, Charcot Avenue, and Trimble Road." National Academies of Sciences, Engineering, and Medicine. 2012. Operation of Light Rail Transit through Ungated Crossings at Speeds over 35 MPH. Washington, DC: The National Academies Press. doi: 10.17226/22822.
×
Page 95

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TCRP Web-Only Document 53 85 APPENDIX A: SUMMARY OF CRASH DATA AT THE INTERSECTIONS OF NORTH FIRST STREET AND BROKAW ROAD, CHARCOT AVENUE, AND TRIMBLE ROAD

TCRP Web-Only Document 53 86 Details of the crash data at the intersection of North First St. and Brokaw Rd. are shown in Table A-1. Table A-1. Details of Crashes at North First St. and Brokaw Rd. Accident Type # of Accidents Probable Cause # of Accidents Other 13 Unlicensed Driver 1 Head on 3 Ran red light 9 Light Rail Vehicle 4 Unsafe turn 2 Rear 25 Unsafe backing 3 Sideswipe 4 Speeding 19 Fixed Object 1 Unsafe Lane Change 8 Right-angle 10 Failure to obey pedestrian signal 1 Pedestrian 2 Following too closely 2 Parked Vehicle 0 Wrong Way on Bicycle 1 Motorcycle 0 Failure to yield 1 Bicycle 2 Driving in bike lane 1 Pedestrian failure to yield 1 Other Impaired Driving 0 Spilling Load 1 Sudden Stop 0 Other 14 Total 64 Total 64 Reported Year # of Accidents Direction of Movement # of Vehicles involved 2006 9 SB (L, T, R) 36 2007 23 NB (L, T, R) 27 2008 24 EB (L, T, R) 17 2009 8 WB (L, T, R) 51 Total 64 Total 131 Severity # of Accidents Weather # of Accidents Fatal 0 Clear 53 Injury 15 Cloudy 8 Property Damage Only 49 Rain 3 Total 64 Total 64 Illumination # of Accidents Surface Conditions # of Accidents Daylight 52 Wet 5 Dark-Lights On 9 Dry 59 Dark-No Lights 0 Ice/Snow 0 Dawn/Dusk 3 Total 64 Total 64 Data were provided by the City of San Jose Department of Streets and Traffic.

TCRP Web-Only Document 53 87 Analysis of the crash data at Brokaw Rd. identified the following key findings:  Fifty-six (88%) crashes occurred during weekdays, and eight (12%) occurred on weekends;  Thirteen (20%) crashes occurred during the morning and afternoon peak periods (i.e., 7:00 a.m. to 9:00 a.m. and 4:00 p.m. to 6:00 p.m.), of which eight occurred during the morning peak and five occurred during the evening peak;  Fifty-two (81%) crashes occurred during daylight, and 12 (19%) occurred during dusk/dark;  Fifty-three (83%) crashes occurred under clear weather conditions, and 11 (17%) occurred under cloudy/rainy weather conditions;  Fifty-nine (92%) crashes occurred on dry pavement, and five (8%) occurred on wet pavement;  The distribution of the severity of the crashes was 0 (0%) fatality, 15 (23%) injury (all injuries combined), and 49 (77%) property damage only. Seventeen people were reported as injured in 15 of the crashes;  “Speeding” was the predominant probable cause (30%) of all crashes, followed by “running red light” (41%), and “unsafe lane change” (13%);  Rear-end crashes were the predominant type of crash (39%) at the intersection; 44% of the rear-end crashes occurred in the westbound direction, 24% occurred both in the northbound and southbound directions, and 8% occurred in the eastbound direction. For all the rear-end crashes, “speeding” was recorded as the probable cause;  Right-angle crashes made up 19% of the crashes, of which five (50%) involved vehicles traveling in the southbound and westbound directions and five (50%) involved vehicles traveling in the southbound and eastbound directions. Four (40%) of the right-angle crashes occurred as a result of red-light running, three (75%) of which were a result of the vehicle running the red light in the southbound direction;  Four crashes at the intersection involved a collision with an LRV;  All four LVR-motor vehicle crashes occurred on a weekday in the off-peak period;  Of the four LRV-motor vehicle crashes, two involved vehicles traveling in the northbound direction running a red light while making a left-hand turn; and  One of the LRV-motor vehicle crashes involved “unsafe backing” of a vehicle traveling in the northbound direction on wet pavement during the extended morning peak period (i.e., within 15 minutes before and/or after); the other LRV-motor vehicle crash involved an unsafe lane change in the southbound direction.

TCRP Web-Only Document 53 88 Details of the crashes at Charcot Ave. are shown in Table A-2. Table A-2. Details of Crashes at North First St. and Charcot Ave. Accident Type # of Accidents Probable Cause # of Accidents Other 0 Unlicensed Driver 0 Head on 1 Ran red light 4 Light Rail Vehicle 1 Unsafe turn 0 Rear 3 Unsafe backing 0 Sideswipe 0 Speeding 3 Fixed Object 1 Unsafe Lane Change 1 Right-angle 5 Failure to obey pedestrian signal 0 Pedestrian 1 Following too closely 0 Parked Vehicle 0 Wrong Way on Bicycle 0 Motorcycle 1 Failure to yield 0 Bicycle 1 Driving in bike lane 1 Pedestrian failure to yield 0 Other Impaired Driving 1 Spilling Load 0 Sudden Stop 0 Other 4 Total 14 Total 14 Reported Year # of Accidents Direction of Movement # of Vehicles involved 2006 3 SB (L, T, R) 4 2007 4 NB (L, T, R) 11 2008 4 EB (L, T, R) 10 2009 3 WB (L, T, R) 3 Total 14 Total 28 Severity # of Accidents Weather # of Accidents Fatal 0 Clear 14 Injury 7 Cloudy 0 Property Damage Only 7 Rain 0 Total 14 Total 14 Illumination # of Accidents Surface Conditions # of Accidents Daylight 11 Wet 0 Dark-Lights On 3 Dry 14 Dark-No Lights 0 Ice/Snow 0 Dawn/Dusk 0 Total 14 Total 14 Data were provided by the City of San Jose Department of Streets and Traffic.

TCRP Web-Only Document 53 89 Analysis of the crashes at Charcot Ave. identified the following key findings:  All of the reported crashes occurred during weekdays;  Two crashes occurred during the morning and afternoon peak periods, of which one occurred during the extended afternoon peak period (i.e., within 15 minutes of afternoon peak);  Eleven (79%) crashes occurred during daylight, and three (21%) occurred during dusk/dark;  All of the reported crashes occurred under clear weather conditions;  All of the reported crashes occurred on dry pavement;  The distribution of the severity of the crashes was zero (0%) fatality, seven (50%) injury (all injuries combined), and seven (50%) property damage only. Eight people were reported as being injured in seven of the crashes;  “Red-light running” was the predominant probable cause (29%) of all crashes, followed by “speeding” with three (21%) incidents, and “unsafe lane change” with one (7%) incident;  Right-angle crashes were the predominant type of crash, with five (36%) incidents; two of the right-angle crashes occurred with vehicles traveling in the southbound and eastbound directions, one occurred with vehicles traveling in the northbound and eastbound directions, one occurred with vehicles traveling in the southbound and westbound directions, and one occurred with vehicles traveling in the northbound and westbound directions. The noted probably cause of two of the right-angle crashes was “running red light” (in one incident the southbound vehicle ran the red light, and in the other the eastbound vehicle ran the red light);  Rear-end crashes made up 21% of the crashes, of which two involved vehicles traveling in the northbound direction, and one involved vehicles traveling in the eastbound direction; and  One crash at the intersection involved a collision with an LRV. This crash involved a vehicle traveling in the northbound direction running a red light while making a left-hand turn. The crash occurred at 9:00 p.m. on a weekday, on dry pavement, in dark conditions, and with clear weather.

TCRP Web-Only Document 53 90 Details of the crash data at the intersection of North First St. and Trimble Rd. are shown in Table A-3. Table A-3. Details of Crashes at North First St. and Trimble Rd. Accident Type # of Accidents Probable Cause # of Accidents Other 5 Unlicensed Driver 0 Head on 5 Ran red light 4 Light Rail Vehicle 1 Unsafe turn 1 Rear 7 Unsafe backing 0 Sideswipe 2 Speeding 11 Fixed Object 3 Unsafe Lane Change 3 Right-angle 5 Failure to obey pedestrian signal 0 Pedestrian 1 Following too closely 0 Parked Vehicle 1 Wrong Way on Bicycle 0 Motorcycle 0 Failure to yield 2 Bicycle 1 Driving in bike lane 0 Pedestrian failure to yield 0 Other Impaired Driving 0 Spilling Load 1 Sudden Stop 1 Other 8 Total 31 Total 31 Reported Year # of Accidents Direction of Movement # of Vehicles involved 2006 7 SB (L, T, R) 20 2007 11 NB (L, T, R) 12 2008 10 EB (L, T, R) 14 2009 3 WB (L, T, R) 18 Total 31 Total 64 Severity # of Accidents Weather # of Accidents Fatal 0 Clear 28 Injury 21 Cloudy 2 Property Damage Only 10 Rain 1 Total 31 Total 31 Illumination # of Accidents Surface Conditions # of Accidents Daylight 27 Wet 2 Dark-Lights On 4 Dry 29 Dark-No Lights 0 Ice/Snow 0 Dawn/Dusk 0 Total 31 Total 31 Source: City of San Jose Department of Streets and Traffic.

TCRP Web-Only Document 53 91 Analysis of the crashes at Trimble Rd. identified the following key findings:  Twenty-six (84%) crashes occurred during weekdays, and five (16%) occurred on weekends;  Ten (20%) crashes occurred during the morning and afternoon peak periods, of which four occurred in the morning peak, and 6 occurred in the afternoon peak;  Twenty-seven (87%) crashes occurred during daylight, and four (13%) occurred during dusk/dark;  Twenty-eight (90%) crashes occurred under clear weather conditions, and three (10%) occurred under cloudy/rainy weather conditions;  Twenty-nine (94%) crashes occurred on dry pavement, and two (6%) occurred on wet pavement;  The distribution of the severity of the crashes was 0 (0%) fatality, 10 (32%) injury (all injuries combined), and 21 (68%) property damage only. Fifteen people were reported as injured in 10 of the crashes;  “Speeding” was the predominant probable cause (36%) of all of the crashes, followed by “running red light” (13%), and “unsafe lane change” (10%);  Rear-end crashes were the predominant type of crash at the intersection (23%), with a total of seven rear-end crashes, where three (43%) occurred in the southbound direction, two (29%) occurred in the westbound direction, one (14%) occurred in the northbound direction, and one (14%) occurred in the eastbound direction. For all of the rear-end crashes, “speeding” was noted as the probable cause;  Right-angle crashes made up 16% of the crashes at the intersection. Of the five right-angle crashes, two involved vehicles traveling in the northbound and westbound directions, one involved vehicles traveling in the southbound and eastbound directions, one involved vehicles traveling in the southbound and westbound directions, and one involved vehicles traveling in the northbound and eastbound directions;  Three of the five right-angle crashes were a result of “red-light running,” (one incident occurred in each of the westbound, southbound, and northbound direction);  Head-on crashes also made up 16% of the crashes at the intersection; and  One crash at the intersection involved a collision with an LRV (with a vehicle making a southbound U-turn). The crash occurred at 12:35 p.m. on a Thursday, on dry pavement, in daylight conditions, and in clear weather. The probable cause for this crash was recorded as “unknown.”

Next: Appendix B: VTA Draft Letter to FHWA Requesting Permission to Experiment with an Increase in LRV Speeds to 40 MPH through Three Ungated Crossings »
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TRB’s Transit Cooperative Research Program (TCRP) Web-Only Document 53: Operation of Light Rail Transit through Ungated Crossings at Speeds over 35 MPH presents the findings of a micro-simulation modeling study that explored the impacts of higher light rail vehicle speeds on intersection safety.

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