Traffic safety methods

Learn about collector/distributors and how they improve traffic flow on freeways.

Learn about diverging diamond interchanges, a proven way to move more people and reduce the potential for collisions.

Learn about roundabouts, including how to travel through them as a pedestrian, cyclist or driver.

Learn about how we use rumble strips to keep vehicles on the roadway and reduce the frequency of collisions.

Basic information about annual roadway re-striping work, and how you can help.

Find important information about traveling in and around roadway work zones, including information on traffic control training and certifications.