Consideration of Roadside Features in the Highway Safety Manual
Highway engineers are constantly redesigning and rebuilding roadways to meet higher
standards, provide safer highways and increase mobility. For the last forty years this has
included designing and building roadways that are more forgiving when a driver inadvertently
encroaches onto the roadside.
The TRB National Cooperative Highway Research Program's
NCHRP Web-Only Document 325:
Consideration of Roadside Features in the Highway Safety Manual
describes the background, the research approach, the resulting run-off-road (ROR) crash
predictive methods and presents a draft chapter for consideration by AASHTO for publication in
the HSM.
Supplemental to the document are
Appendix A and
Appendix B-F.
This Summary Last Modified On: 4/29/2022