Guidance for the Design and Application of Shoulder and Centerline Rumble Strips (2009)

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Appendix B Survey Questionnaire

B-1 National Cooperative Highway Research Program Project 17-32 “Guidance for the Design and Application of Shoulder and Centerline Rumble Strips” The following survey on shoulder and centerline rumble strips is being conducted as part of the National Cooperative Highway Research Program (NCHRP), which is sponsored by the American Association of State Highway and Transportation Officials (AASHTO) in cooperation with the Federal Highway Administration (FHWA). Your responses to the following questions concerning your agency's policies and practices regarding the design and application of shoulder and centerline rumble strips would be greatly appreciated. SURVEY QUESTIONNAIRE (Please return by September 23, 2005) SHOULDER RUMBLE STRIP POLICIES AND PRACTICES: 1. Does your agency have a written policy or set of guidelines concerning the installation/application of shoulder rumble strips? ............................................................................................................................. Yes No If YES, please attach a copy of your guidelines with your response or provide a web address. Web Address to Guidelines:__________________________________________________________________ If NO, does your agency use shoulder rumble strips? ............................................................ .... Yes No 2. On what types of roadways does your agency install shoulder rumble strips? (Select all that apply) Urban freeway mainline roadways Urban freeway on-ramps and off-ramps Urban multilane divided highways (nonfreeways) Urban multilane undivided highways (nonfreeways) Urban two-lane roads Rural freeway mainline roadways Rural freeway on-ramps and off-ramps Rural multilane divided highways (nonfreeways) Rural multilane undivided highways (nonfreeways) Rural two-lane roads Other: _____________________________________________________________ 3. On roadways with medians, does your agency install shoulder rumble strips on both the right (outside) and left (median) shoulder?............................................................................................................. Yes No If YES, does your policy differ between rumble strips installed on the right (outside) versus the left (median) shoulder? ............................................................................................................................... .... Yes No

B-2 If your policy differs, what are the primary differences? ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ 4. Does your policy concerning shoulder rumble strips differ depending upon the type of shoulder surface? ... ....................................................................................................................................................... Yes No If YES, please elaborate: 5. How close to the edgeline does your agency install shoulder rumble strips? ___________________________ If the lateral placement from the edgeline is variable, what specific features are considered in determining the lateral placement of the shoulder rumble strips? ________________________________________________________________________________________ _________________________________________________________________________________________ 6. At what specific features or areas along the shoulder/roadway (e.g., ramps or catch basins) are shoulder rumble strips discontinued to avoid adverse consequences (e.g., pavement deterioration, noise, etc)? _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ 7. What features directly affect installation requirements within your agency’s shoulder rumble strip policy or guidelines? (Select all that apply) Roadway type Shoulder width Lateral clearance Traffic volume Bicycles Shoulder pavement type Shoulder pavement depth Area type (i.e., urban vs. rural) Speed limit Crash frequency/rate Other: _____________________________________________________________ Other: _____________________________________________________________ 8. Does your agency have a minimum shoulder width requirement for the installation of shoulder rumble strips? ..................................................................................................................................................... Yes No If YES, please elaborate:

B-3 9. Does your agency have a minimum lateral clearance requirement for the installation of shoulder rumble strips? .................................................................................................................................................. ... Yes No If YES, please elaborate: _________________________________________________________________________________________ 10. Does your agency have a minimum traffic volume requirement for the installation of shoulder rumble strips? .................................................................................................................................................. ... Yes No If YES, please elaborate: _________________________________________________________________________________________ 11. Does your agency have a minimum pavement depth requirement for the installation of shoulder rumble strips? .................................................................................................................................................. ... Yes No If YES, please elaborate: _________________________________________________________________________________________ 12. Does your agency have a minimum speed limit requirement for the installation of shoulder rumble strips? .................................................................................................................................................. ... Yes No If YES, please elaborate: _________________________________________________________________________________________ 13. Does your agency have a minimum crash frequency/rate requirement for the installation of shoulder rumble strips? ....................................................................................................................................... Yes No If YES, please elaborate: _________________________________________________________________________________________ 14. Does your agency’s policy change depending upon whether shoulder rumble strips will be installed along a designated bicycle route? ........................................................................................................ Yes No If YES, please elaborate: _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ 15. Does your agency’s policy provide a gap in the shoulder rumble strip pattern to allow bicyclists to maneuver from the travel lane to the shoulder and back without traversing the rumble strips? ........... ... Yes No

B-4 If YES, please describe the gap pattern and whether it varies with the type of facility: _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ 16. Most agencies that use shoulder rumble strips install them continuously along extended sections of roadway. Does your agency, in some cases, install shoulder rumble strips along specific shorter sections of roadway (e.g., specific horizontal curves)? ..................................................................................................................................................... Yes No If YES, please elaborate: _________________________________________________________________________________________ _________________________________________________________________________________________ 17. Has your agency installed milled, rolled, or formed rumble strips directly on the edgeline of the traveled way? ..................................................................................................................................................... Yes No 18. Has your agency installed textured pavement edgeline markings (e.g., thermoplastic) to stimulate the driver with audible or tactile sensations (i.e., rumble stripes)? .................................................................................................................................................. ... Yes No If YES, please elaborate: _________________________________________________________________________________________ _________________________________________________________________________________________ 19. Has your agency’s policy/practice of installing shoulder rumble strips changed recently (i.e., within the last 3 to 5 years)? .............................................................................................................................. Yes No If YES, how has it changed? _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ If YES, why was it changed? _________________________________________________________________________________________ _________________________________________________________________________________________ 20. Do you anticipate that your agency’s policy/practice of installing shoulder rumble strips will change in the next year or so (i.e., are changes planned or are modifications currently being drafted)? ...... Yes No If YES, please explain what type of modifications will be made or are anticipated? _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ If YES, what is the basis or justification for the planned changes? _________________________________________________________________________________________ _________________________________________________________________________________________

B-5 CENTERLINE RUMBLE STRIP POLICIES AND PRACTICES: 21. Does your agency have a written policy or set of guidelines for the installation/application of centerline rumble strips on undivided roads? ........................................................................................... Yes No If YES, please attach a copy of your guidelines with your response or provide a web address. Web Address to Guidelines:________________________________________________________________ If NO, does your agency use centerline rumble strips? ........................................................ ... Yes No 22. Concerning the lateral placement of centerline rumble strips, check the type(s) of applications that have been installed by your agency? Centerline rumble strips within pavement markings Centerline rumble strips extend into travel lane Centerline rumble strips on either side of pavement markings 23. On what type of roadways does your agency install centerline rumble strips? (Select all that apply) Urban multilane undivided highways (nonfreeways) Urban two-lane roads Rural multilane undivided highways (nonfreeways) Rural two-lane roads Other: _____________________________________________________________ 24. Does your agency have a minimum lane width requirement for the installation of centerline rumble strips? ............................................................................................................................................... ... Yes No If YES, please elaborate: _________________________________________________________________________________________

B-6 25. Does your agency have a minimum traffic volume guideline for the installation of centerline rumble strips? ............................................................................................................................................... ... Yes No If YES, please elaborate: _________________________________________________________________________________________ 26. Does your agency have a minimum speed limit guideline for the installation of centerline rumble strips? ............................................................................................................................................... ... Yes No If YES, please elaborate: _________________________________________________________________________________________ 27. Does your agency have a minimum crash frequency/rate guideline for the installation of centerline rumble strips? ................................................................................................................................................ .. Yes No If YES, please elaborate: _________________________________________________________________________________________ 28. Has your agency installed both centerline rumble strips and shoulder rumble strips along the same roadway? ............................................................................................................................................... ... Yes No If YES, approximately how many miles of this dual application have been installed? GENERAL QUESTIONS 29. Has your agency installed midlane rumble strips (i.e., rumble strips installed in the center of the travel lane)? .................................................................................................................................................. Yes No If NO, what is the possibility that your agency would consider installing midlane rumble strips on an experimental basis? Highly unlikely Willing to consider High likelihood 30. Does your agency have statewide or district level data in electronic format that contains information concerning the application of shoulder and/or centerline rumble strips (e.g., implementation dates, design information, etc.)? .................................................................................................................... Yes No 31. Does your agency install rumble strips… Only as part of larger projects? As a stand-alone safety improvement? Both situations 32. Does your agency have data on bicycle only crashes or non-crash injuries related to rumble strip encounters? ............................................................................................................................................... ... Yes No

B-7 33. We are currently setting priorities for the research in NCHRP Project 17-32. Your opinion would be appreciated. Please rank the priority for research to address gaps in knowledge associated with SHOULDER rumble strips? In column two of the table, please rank each research need on a 1 (Low Priority) to 5 (High Priority) scale. Please identify additional research needs in the empty rows at the bottom of the table. In column three, please check if your agency has already performed related research. In column four, please check if your agency might be willing to participate in future research or has available data to address the issue. NOTE: When assigning the priority, please do not assign high priority (i.e., 5) to more than three topics. Future Research Needs Related to Shoulder Rumble Strips Priority* Check if your agency has already performed related research Check if your agency might be willing to participate in future research or has available data to address the issue Determine optimum dimensions (e.g., length, width, depth, spacing) Determine minimum level of stimuli (i.e., sound or vibration) necessary to alert a drowsy or inattentive driver Determine optimum lateral placement from the edgeline Determine minimum shoulder width Better quantify safety effectiveness: • Along different types of roads (e.g. freeways, 2-lane highways, multilane highways, etc.) • Along roadways with varying speeds or ADT • Under varying conditions (e.g., wet vs. dry, light vs. dark, etc.) • Along varying roadway geometry • Along varying roadside conditions (e.g., 10 ft clear zone vs. 20 ft clear zone vs. 30 ft clear zone) • Differences in rumble strips installed along the right (outside) vs. left (median) shoulder Determine optimum longitudinal gaps in rumble strips to provide accessibility for bicyclists Improve physical design of rumble strips with respect to “rideability” for bicyclists and motorcyclists Determine impact of noise produced by rumble strips on adjacent residents Determine effect on pavement performance Determine effect on maintenance activities Others (please specify): *Priority Ranking Scale: 1 – Low priority 2 – Low-medium priority 3 – Medium priority 4 – Medium-high priority 5 – High priority

B-8 34. Please rank the priority for research to address gaps in knowledge associated with CENTERLINE rumble strips? In column two of the table, please rank each research need on a 1 (Low Priority) to 5 (High Priority) scale. Please identify additional research needs in the empty rows at the bottom of the table. In column three, please check if your agency has already performed related research. In column four, please check if your agency might be willing to participate in future research or has available data to address the issue. NOTE: When assigning the priority, please do not assign high priority (i.e., 5) to more than three topics. Future Research Needs Related to Centerline Rumble Strips Priority* Check if your agency has already performed related research Check if your agency might be willing to participate in future research or has available data to address the issue Determine optimum dimensions (e.g., length, width, depth, spacing) Determine optimum placement with respect to the centerline pavement markings (related to Question 22) Operational impacts on vehicular traffic (i.e., vehicle speeds and lateral placement) Assess advantages/disadvantages of installing centerline rumble strips in passing zones Better quantify safety effectiveness: • Along different types of roads (e.g. 2-lane highways, multilane highways, etc.) • Along roadways with varying speeds and ADTs • Under varying conditions (e.g., wet vs. dry, light vs. dark, etc.) • Along varying roadway geometry • Installed in combination with shoulder rumble strips (related to Question 28) Improve physical design of rumble strips with respect to “rideability” for bicyclists and motorcyclists Determine impact of noise produced by rumble strips on adjacent residents Determine effect on visibility of pavement markings Determine effect on pavement performance Determine effect on maintenance activities Others (please specify): *Priority Ranking Scale: 1 – Low priority 2 – Low-medium priority 3 – Medium priority 4 – Medium-high priority 5 – High priority

B-9 35. May we have the name of an engineer in your agency that we may contact to clarify any aspect of your response or to obtain additional information? Contact: Title: Agency: Address: Telephone #: Fax #: e-mail address: Please return the completed survey by September 23, 2005, to: Darren J. Torbic, Ph.D. Senior Traffic Engineer Midwest Research Institute 2362 Raven Hollow Rd State College, PA 16801 814-237-8831 dtorbic@mriresearch.org