In 2015, there were more than 6 million police-reported crashes in the United States. While crashes are complex and it is generally interactions between road users, vehicles, and the environment that lead to crashes, some form of driver error is a contributing factor in most crashes.
The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 316: Human Factors Guidelines for Road Systems 2021 Update, Volume 1: Updated and New Chapters is an addendum to NCHRP Report 600: Human Factors Guidelines for Road Systems (HFG),Second Edition, which was the first complete holistic release of the HFG.
Supplemental to the document is a flier describing the updated and new chapters and NCHRP Web-Only Document 316: Human Factors Guidelines for Road Systems 2021 Update,Volume 2: Conduct of Research Report.
National Academies of Sciences, Engineering, and Medicine. 2022. Human Factors Guidelines for Road Systems 2021 Update, Volume 1: Updated and New Chapters. Washington, DC: The National Academies Press. https://doi.org/10.17226/26473.
|Part I: Updated Chapters||2-2|
|Chapter 1: Why Have Human Factors Guidelines for Road Systems?||3-6|
|Chapter 5: Sight Distance||7-26|
|Chapter 10: Non-Signalized Intersections||27-37|
|Chapter 22: Tutorials||38-121|
|Part II: New Chapters||122-122|
|Chapter 28: Pedestrians||123-142|
|Chapter 29: Bicyclists||143-160|
|Chapter 30: Roundabouts||161-173|
|Chapter 31: Additional References||174-186|
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