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44 appendix a Survey Questionnaire As part of the National Cooperative Highway Research Project 20-05, Synthesis of Practice Project 47-15, we would appreciate it if you would take time out of your busy schedule to complete the following survey. All responses will be summarized in the final report, so individual responses will remain anonymous. Responses are requested by January 6, 2016. Questions can be addressed to the principal investigator: Tom Urbanik Kittelson & Associates, Inc. 4332 Teravista Club Dr #75 Round Rock, TX 78665 turbanik@kittelson.com 512-670-8074 If any of your responses indicate you have written policy or guidance, we would appreciate receiving an electronic copy by email, U.S. mail, or you can upload to: http://www.kittelson.com/ftp UserID: preempt Password: traffic All questions have space for comments if clarification or qualification is needed. Survey of Agencies on Traffic Signal Preemption at Intersections Near Highway-Rail Grade Crossings NCHRP 47-15 Survey Questionnaire
45 Name Title Agency Address Address 2 City/Town State ZIP Telephone Email 1. Please provide the name and contact information of the primary person completing this survey (even if portions of the survey require assistance from others). Comments 2. Does your agency have written policy or guidelines on the preemption of traffic signals near highway-rail grade crossings? Yes No Unsure Comments 3. Does your state have a state highway-rail grade crossing action plan? Yes No Unsure
46 Does your agencyâs preemption timing practice address the following issues? Preemption Timing Practice NCHRP 47-15 Survey Questionnaire Comments 4. Do you only use simultaneous preemption? Yes No Unsure Seconds 5. If the answer to Question #4 is yes, what is the maximum warning time you would request? Comments 6. If the answer to Question #4 is no, do you have a standard procedure to calculate your advance preemption time? Yes No Unsure
47 Comments 7. Do you have a standard practice to calculate the track green clearance interval? Yes No Unsure Comments 8. If the answer to Question #7 is yes, does it allow the routine truncation of pedestrian clearance? Yes No Unsure Comments 9. How do your signals generally operate during preempt hold intervals? Dwell on parallel arterial Flash yellow on parallel arterial Flash all-red Cycle through non-conflicting movements Other (please specify below)
48 Comments 10. Do you time a minimum green interval before terminating a phase that is transitioning to the track clearance interval? Yes No Unsure Comments 11. Do you restrict conflicting turns across the tracks during preempt through blank-out signs or exclusive phases? Yes No Unsure Comments 12. Do you use any smart recovery strategies? Yes No Unsure
49 Comments 13. At multiple-track locations, do you request second-train-coming logic from the railroad for the railroad warning system on new or upgraded installations? Yes No Unsure Comments 14. Do you have train stations near crossings? Yes No Unsure Comments 15. If the answer to Question #14 is yes, do you make special provisions for trains stopping at stations? Yes No Unsure 16. If the answer to Question #15 is yes, describe the special provisions that are made for trains stopping at stations.
50 Comments 17. Do you have fire preemption at rail preempt intersections? Yes No Unsure Comments 18. Do you prioritize which preempts can override other preempts? Yes No Unsure (1) (2) (3) (4) (5) (6) 19. If the answer to Question #18 is yes, describe priority for your first six preempts. Preempt 1 has the highest priority, but more than one preempt may have the same priority (first come, first serve).
51 How does your agency typically operate grade crossings? Grade Crossing Operations NCHRP 47-15 Survey Questionnaire Comments 20. Do you use a simple, two-wire preempt? Yes No Unsure Comments 21. If the answer to Question #20 is yes, is the circuit from the railroad normally closed (when no preempt) or normally open (when no preempt)? Normally closed Normally open Unsure 22. If the answer to Question #20 is no, describe your preempt circuitry (e.g., four-wire, serial, or other).
52 Comments 23. Do the majority of crossings have grade crossing predictors (âconstantâ warning time)? Yes No Unsure Comments 24. Do you preempt signals that are more than 200 feet from the crossing? Yes No Unsure Comments 25. Do any existing locations have advance preemption? Yes No Unsure
53 Does your design practice address the following issues? Design Practice NCHRP 47-15 Survey Questionnaire Comments 26. Do new installations or upgrades include âconstantâ warning train detection? Yes No Unsure Comments 27. Do new installations have battery back-up? Yes No Unsure Comments 28. Do new installations have LED signal indications? Yes No Unsure
54 Comments 29. Would you likely use advance preemption at a new location? Yes No Unsure Comments 30. Do you request additional rail outputs (e.g., gate-down, island circuit, or other)? Yes No Unsure 31. If the answer to Question #30 is yes, which outputs? Comments 32. Do you use vehicle gates at all new or upgraded crossings? Yes No Unsure
55 Comments 33. Do you use pedestrian gates at gated crossings? Yes No Unsure Comments 34. Do you use presignals? Yes No Unsure Comments 35. Do you use queue cutters? Yes No Unsure
56 Comments 36. Do you use four-quadrant gates? Yes No Unsure 37. If the answer to Question #36 is yes, when do you use four-quadrant gates? Comments 38. Do you use any advanced train detection or railway interconnection technology? Yes No Unsure 39. If the answer to Question #38 is yes, describe the advanced train detection or railway interconnection technology.
57 What does your maintenance practice include? Maintenance Practice NCHRP 47-15 Survey Questionnaire Comments 40. Do you have railroad-preemption-specific training for your maintenance staff? Yes No Unsure Comments 41. Do you have written procedures for contacting the railroad regarding activities near grade crossings? Yes No Unsure Comments 42. Do you perform routine inspections and/or maintenance of your preemption system? Yes No Unsure
58 43. If the answer to Question #42 is yes, how often do you perform inspections and/or maintenance? Comments 44. Do you coordinate with the railroadâs monthly testing of preemption? Yes No Unsure Comments 45. Do you periodically review crossings to determine the need for upgrading the rail warning system or traffic signal system? Yes No Unsure 46. If the answer to Question #45 is yes, how often do you review crossings?
59 47. Do you shop test your cabinet and controller before installation? Yes No Unsure Comments 48. Do you restrict timing changes at interconnected traffic signals to those that have been pre- approved by an appropriate staff member? Yes No Unsure Comments 49. Do you use contract maintenance? Yes No Unsure
60 Comments 50. If the answer to Question #49 is yes, do you have specific procedures developed regarding coordination with the railroad? Yes No Unsure What do your monitoring activities include? Monitoring Activities NCHRP 47-15 Survey Questionnaire Comments 51. Do you record detailed rail-warning-system events beyond the preempt log in the traffic signal controller? Yes No Unsure Comments 52. Do you compare design assumptions to actual operations in the field? Yes No Unsure
61 Comments 53. Do you have traffic signals preempted by street-running LRT? Yes No Unsure Comments 54. If the answer to Question #53 is yes, do you have written practices on the signal operation? Yes No Unsure Comments 55. Do you have any highway-rail grade crossing research or demonstration projects underway? Yes No Unsure Contact Name Email Phone Number 56. If the answer to Question #55 is yes, please provide contact information including a name, email, and phone number.
