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The evolution of roadside hardware in the past has been largely dictated by changes to crash testing guidelines rather than observed field performance.

The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 332: Multi-State In-Service Performance Evaluations of Roadside Safety Hardware develops a unified format and nationally compatible "in-service performance evaluation" (ISPE) methodology employing various individual state database parameters.

The document is supplemental to NCHRP Research Report 1010: In-Service Performance Evaluation: Guidelines for the Assembly and Analysis of Data.

Suggested Citation

National Research Council. 2022. Multi-State In-Service Performance Evaluations of Roadside Safety Hardware. Washington, DC: The National Academies Press. https://doi.org/10.17226/26749.

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Publication Info

63 pages |  8.5 x 11 |  DOI: https://doi.org/10.17226/26749

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