Urban mobility problems demand clarity. Intersections remain the most common sites for crashes, congestion, and violations.

New research shows that AI in cars might warrant a new, four-light traffic signal that is more efficient. Getty Images/iStockphoto Surely this will complicate the game of red light, green light.

Starting January 1, California enforces new traffic laws. From smarter red light cameras to mandatory e-bike lights, here's ...

The City of Lawrence has received a grant to run an audit of two major thoroughfares, change the timing of some traffic ...

Locked in bumper-to-bumper traffic, eyes glazing over at the traffic light seemingly frozen on red. As if on cue, a nearby driver blares their horn for a cathartic release as another yells a string of ...

Miami-Dade County recently hit the brakes on upgrading thousands of intersections with cameras and computers to calculate the best time for a green light to flick on and keep traffic moving. On ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Traffic lights are the worst—not only do they put stops in your ...