Poorly timed traffic lights waste time and money, but a University of Michigan study uses connected cars for a simpler remedy.

As cars and trucks get smarter and more connected, the humble lights that have controlled the flow of traffic for more than a century could also be on the cusp of a major transformation.

You’re sitting at a red light. There’s no traffic headed in the other direction. But the light isn’t changing. Technology coming to the D.C. area may help. Alexandria, Virginia, will begin ...

Systems have been developed that control lights for whole cities and digital models of traffic flow have been honed to a fine art. The emergence of autonomous vehicles (AV) has introduced a new twist.

Google is analyzing data from its Maps app to suggest how cities can adjust traffic light timing to cut wait times and emissions. The company says it’s already cutting stops for millions of drivers.

The CIRCLES Consortium of universities, automakers and government agencies is developing an AI-powered cruise control system that can help prevent traffic.

From their NASA-like headquarters in suburban West Palm Beach, county engineers monitor hundreds of intersections' traffic lights.