Highway Safety Manual
From Wikipedia, the free encyclopedia
The Highway Safety Manual (HSM) is a publication of the American Association of State Highway Transportation Officials. It contains concepts, guidelines, and computational procedures for predicting the safety performance of various highway facilities.[1]
The HSM was published in 2010 and is divided into four sections:
- Part A – Introduction, Human Factors, and Fundamentals of Safety;
- Part B – Roadway Safety Management Process;
- Part C – Predictive Methods; and
- Part D – Crash Modification Factors.
