Your Chance to Contribute to the Next Edition of the Highway Safety Manual

January 07, 2016

This week, a major national outreach program was initiated to support the development of the Second Edition of the Highway Safety Manual (HSM). The HSM is published by American Association of State Highway and Transportation Officials (AASHTO), and contains an incredibly comprehensive compilation of tools and methodologies for analyzing the safety impacts of roadway decisions. As such, it is a critical component in the global effort to significantly reduce fatal and serious injury crashes. The project is being funded through the National Cooperative Highway Research Program (NCHRP) which is primarily supported with contributions from the State Departments of Transportation.

The current outreach effort includes a broad-based survey of current HSM users that will provide the research team with both a sense of how the HSM is being used, and where its usability, accessibility and technical content can be improved. The survey can be accessed at the new “HSM2 Development Website” at The website also includes a portal through which more experienced HSM users can offer specific comments and suggestions for changes to the current HSM.

Respondents are being asked to complete and submit the survey and their suggestions by February 15, 2016.

The HSM was originally developed by Kittelson & Associates, Inc. (KAI) and published by AASHTO in 2011, and is being used in many states to perform quantitative safety analysis. The second edition will build on this incorporating, and in some cases, completing new research that is important to the expanded use of the manual. The second edition is expected to be completed and submitted to AASHTO in 2019.

“We are excited to have this opportunity to work with AASHTO, TRB and many other colleagues in developing a product that will further advance safety on our nation’s roadways,” said Joe Toole, the Project Manager for the KAI team leading this effort. Joining the KAI team is the Texas Transportation Institute, a long-time partner and collaborator with KAI. “Our team brings both an incredibly strong research capability as well as “hands-on” knowledge of user needs that we have developed through our implementation of the HSM,” Toole added.

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