Intersection Safety

Aerial view of an intersection

Intersections are planned points of conflict in any roadway system.  This includes U.S. and state highways, county roads and local streets.  Motorized and non-motorized users are crossing paths as they travel through or turn from one route to another.  Therefore, it is not surprising that a major part of addressing road safety challenges involves intersections. In the United States, over the last several years an average of 21% of the fatalities and roughly 50% of the serious injuries have been attributed to intersections. Intersections can also become very congested when traffic volumes are high, creating inefficiency that results in user delay and frustration.

Strategies to address intersection safety are diverse.  Many strategies are engineering based, including geometric design and application of traffic control devices (such as signs, markings and signals).  Equally important strategies involve education and enforcement.  Quite often, it is a combination of these strategies that is needed to truly solve a problem.

Intersection safety is a national, state and local priority. As a result, organizations such as the FHWA, NHTSA, the Institute of Transportation Engineers (ITE), the American Association of State Highway and Transportation Officials (AASHTO), the American Automobile Association (AAA), and other private and public organizations continue to develop and deploy resources designed to help make intersections safer, and to save lives as a result.


Program Contact

Jeffrey Shaw


What's New

Signalized Intersections: An Informational Guide

South Carolina Case Study: Systematic Intersection Improvements

Stop-Controlled Intersection Safety: Through Route Activated Warning Systems

Roundabouts: An Informational Guide, Second Edition (NCHRP Report 672)

Roundabouts Peer-to-Peer Assistance

How to drive a roundabout (WSDOT)

Modern Roundabouts: A Safer Choice


FHWA's Intersection Resources Library CD-ROM

Roundabouts Technical Summary

Mini-Roundabouts Technical Summary

Access Management in the Vicinity of Intersections Technical Summary

Intersection Safety Case Studies

Intersection Safety Technologies

Presentation: Intersection Safety

Example Intersection Safety Implementation Plan

Intersection Safety Implementation Plan Workshop

Example Data Analysis Package and Straw Man Outline