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TRB’s National Cooperative Highway Research Program (NCHRP) Research Results Digest 337: Design Flexibility Considerations for Built Urban Environments explores issues related to the use of roadway design exceptions or variances. The report also examines processes designed to help manage the use of exceptions or variances, and highlights potential means to provide a timely procedure for addressing design exceptions or variances.

Appendices A through D to NCHRP RRD 337 were not published as part of the report. They are linked to below.

Appendix A Agency Survey

Appendix B Survey Results

Appendix C Respondents

Appendix D Standards/Guideline Excerpts

Topics

Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2009. Design Flexibility Considerations for Built Urban Environments. Washington, DC: The National Academies Press. https://doi.org/10.17226/23027.

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Publication Info

29 pages |  8.5 x 11 |  DOI: https://doi.org/10.17226/23027
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Design Flexibility Considerations for Built Urban Environments 1-32

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