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How the HSM describes itself • “presents tools and methodologies for consideration of “safety" across the range of highway activities: planning, programming, project development, construction, operations, and maintenance." • “The purpose is to convey present knowledge regarding highway safety information for use.
"The Highway Safety Manual (HSM) is a resource that provides safety knowledge and tools in a useful form to facilitate improved decision making based on safety performance. The focus of the HSM is to provide quantitative information for decision making. The HSM assembles currently available information and
Safety Manual User Guide does not supersede any publications, guidelines, manuals, and policies by. AASHTO, FHWA, TRB, or other federal and state agencies. The user should check agency-specific approaches before applying the HSM and the Highway Safety Manual User Guide to estimate the crash frequency and
While this web site is hosted by AASHTO, the Association works closely with the Federal Highway Administration (FHWA) Office of Safety (click here to visit the FHWA HSM web page) and the Transportation Research Board (TRB) Highway Safety Performance Committee on issues related to the HSM. Click on the boxes
For example, the HSM provides a method to quantify changes in crash frequency as a function of cross-sectional features. With this method, the expected change in crash frequency of different design alternatives can be compared with the operational benefits or environmental impacts of these same alternatives. As another
Errata to the Highway Safety Manual, 1st Edition and Supplement. 0 2010 errata changes in blue 0 2012 errata changes in red 0 2016 errata changes in green (bold). HSM-1-E3 ii. March 2016. Page. Existing Text. Corrected Text. Vol. 1. 2-12. In Section 2.5, first paragraph, there is a duplicate partial second sentence.
The Highway Safety Manual (HSM), published by the American Association of State Highway Transportation Officials (AASHTO) is the recognized source of information and methods for quantitatively evaluating traffic safety performance on existing or proposed roadways. The HSM provides a science-based, technical
Highway Safety Manual The purpose of the Highway Safety Manual (HSM) is to provide practitioners with the best factual information and tools to facilitate roadway design and operational decisions based on explicit consideration on their safety consequences. The first edition of the HSM was published in spring 2010.

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February 2018