Suggested Citation:
"Appendix C: Typical Case Example Interview Questions." National Academies of Sciences, Engineering, and Medicine. 2025. Implementation of Federal Highway Administration Proven Safety Countermeasures. Washington, DC: The National Academies Press.
doi: 10.17226/28855.
What led your DOT to start implementing FHWA PSCs?
What process does your DOT use to prioritize and fund FHWA PSCs for implementation?
How often does your state DOT consult FHWA’s PSC list when developing or planning safety projects/programs (versus your DOT’s own list of countermeasures)?
What process (e.g., pilot projects, demonstrations, etc.) does your DOT typically use to evaluate FHWA PSCs before they are fully implemented?
What process does your DOT use to evaluate the safety performance of FHWA PSCs after they are implemented?
Is your DOT currently in the process of conducting evaluation studies for any FHWA PSCs? If so, which FHWA PSCs?
What are some examples of implementation challenges experienced by your DOT in the implementation of FHWA PSCs?
What are some examples of physical modifications or changes in implementation strategies that your DOT has used for FHWA PSCs to overcome challenges and barriers?
What are some of the factors that led your DOT to stop using some of the FHWA PSCs? (Ask this question if they have stopped using any PSCs).
Is your DOT currently in the process of developing guidance or other resources to support implementation of FHWA PSCs? If so, which FHWA PSCs?
Are there sufficient resources available (e.g., guidance, publications, case studies, etc.) to assist you with understanding and implementing the FHWA PSCs in your state? If not, what is missing?
What is your DOT’s staffing approach to implementation and management of FHWA PSCs?
Does your DOT regularly assess implementation (i.e., extent, scale, frequency of implementation) of FHWA PSCs? If so, how?
In what ways does your DOT partner with other agencies (e.g., local and/or tribal agencies) to implement FHWA PSCs?
Have your DOT’s processes for implementation of FHWA PSCs changed over time and does your DOT plan any future changes to these processes?
Are there specific FHWA PSCs for which your DOT is increasing implementation or making a standard in the future? If so, which ones?
How does your DOT integrate FHWA PSCs with other strategies/initiatives (e.g., Safe System approach) to improve safety?
Besides the 28 FHWA PSCs, are there other safety countermeasures that are frequently implemented by your DOT? If so, which ones?
What would you most like to learn about regarding practices of other states for FHWA PSCs?
If you could improve anything related to FHWA’s PSC initiative, what would that be?
Suggested Citation:
"Appendix C: Typical Case Example Interview Questions." National Academies of Sciences, Engineering, and Medicine. 2025. Implementation of Federal Highway Administration Proven Safety Countermeasures. Washington, DC: The National Academies Press.
doi: 10.17226/28855.
For decades, public safety has been a priority for state departments of transportation (DOTs) as they strive to reduce traffic crashes. To support these efforts, the Federal Highway Administration's (FHWA) Office of Safety developed a list of proven safety countermeasures that include brief descriptions, information sheets, and additional references. These measures have been field-tested and proven to reduce crashes.
NCHRP Synthesis 639: Implementation of Federal Highway Administration Proven Safety Countermeasures, from TRB's National Cooperative Highway Research Program, documents state DOT practices regarding the implementation of FHWA proven safety countermeasures. Case examples from six state DOTs provide additional information on the practices related to the FHWA proven safety countermeasures.
National Academies of Sciences, Engineering, and Medicine. 2025. Implementation of Federal Highway Administration Proven Safety Countermeasures. Washington, DC: The National Academies Press.
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