National Academies Press: OpenBook

Light Rail Vehicle Collisions with Vehicles at Signalized Intersections (2008)

Chapter: Appendix A - Interview Questionnaire

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Page 39
Suggested Citation:"Appendix A - Interview Questionnaire ." National Academies of Sciences, Engineering, and Medicine. 2008. Light Rail Vehicle Collisions with Vehicles at Signalized Intersections. Washington, DC: The National Academies Press. doi: 10.17226/14215.
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Page 39

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39 APPENDIX A Interview Questionnaire HISTORY OF LRT OPERATIONS 1. When did LRT operations begin? 2. Have there been any expansions? When? Please describe. OPERATING ENVIRONMENT 3. Please describe your LRT alignment(s). 4. Approximately how many signalized intersections does the LRT operate through? 5. How many intersections are controlled by crossing gates? Are they controlled by other devices? 6. Describe the signal operations at the intersections (e.g., partial-priority, priority, pre-emption)? 7. Describe the geometry of the intersections. LRV–MOTOR VEHICLE COLLISIONS HISTORY AT SIGNALIZED INTERSECTIONS 8. About how many LRV–motor vehicle collisions at signal- ized intersections does your agency experience each year? How does this compare to collision rates when the lines were first opened? How has the collision rate changed over the years [e.g., no change, major decrease after first year(s) of operation, slight decrease over years]? Essentially, describe the collision history at signalized intersections and particu- larly with left-turn vehicles. 9. What are the most common circumstances of LRV– motor vehicle collisions at signalized intersections? 10. What are the most common causal or contributing factors to these LRV–motor vehicle collisions? 11. Do you have any unique environmental or operating condi- tions that might contribute to/reduce the occurrence of these collisions? If so, please explain. STRATEGIES 12. How has your agency approached the problem of LRV– motor vehicle collisions at signalized intersections (e.g., research, accident reconstruction)? 13. What processes have you gone through for selecting poten- tial strategies for mitigating these types of collisions (e.g., research, collision typing)? 14. What strategies has your agency tested/implemented to miti- gate collisions between LRVs and motor vehicles at signal- ized intersections? a. Why were the strategies implemented/not implemented? b. Did you coordinate with any other agency during development/testing/implementation of the strategies? i. If so, with which agencies did you coordinate and how (e.g., city/county DOT)? ii. What were each agency’s roles in the process? 15. Have you conducted studies to assess the effectiveness of any of these strategies? If so, please explain. If not, can you offer any anecdotal information on the effectiveness of the strategies (e.g., in terms of operator acceptance, public acceptance, reduction in claims)? 16. Can you provide general cost information for the strategies you have tested/implemented? 17. Does your state motor vehicle manual discuss driving in an LRT environment? RECOMMENDATIONS 18. What recommendations or advice would you give to other agencies planning or implementing LRT with regard to LRT–motor vehicle collisions at signalized intersections? 19. What recommendations or advice would you give to other agencies that are currently experiencing problems with LRT–motor vehicle collisions at signalized intersections?

Next: Appendix B - List of Participating Transit Agencies »
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TRB's Transit Cooperative Research Program (TCRP) Synthesis 79: Light Rail Vehicle Collisions with Vehicles at Signalized Intersections explores mitigation methods tested and used by transit agencies to reduce collisions between light rail vehicles (LRVs) and motor vehicles where light rail transit (LRT) runs through or adjacent to highway intersections controlled by conventional traffic signals.

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