USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Site Notification

Site Notification

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation
FHWA Highway Safety Programs

Signalized Intersections

image of signalized intersection

With approximately one–third of all intersection fatalities occurring at signalized intersections, it is important to assess and design these intersections with safety in mind.

Traffic signals are often chosen for operational reasons, and in some cases may represent a trade–off between safety and mobility. Some proven countermeasures that can reduce crashes at signalized intersections include:

  • Backplates with retroflective borders
  • Leading pedestrian interval
  • Yellow change intervals

On this web page, learn about these and other signalized intersection safety strategies.

Outreach and Education Resources

Technical Materials and Research

Connections to Other Transportation Safety Topics


Automated Enforcement

IMPORTANT NOTE: The Federal Highway Administration (FHWA) does not own or operate automated enforcement systems, which include red–light cameras. Automated enforcement systems are not considered a traffic control device, so they are not governed by the Manual on Uniform Traffic Control Devices.

State–specific survey information about automated enforcement systems collected by the National Highway Traffic Safety Administration (NHTSA) can be found on NHTSA's web page.

Additional questions, including those about tickets/citations, should be directed to the local (or State) police, traffic engineering department, or public works department.