Today's busy roadways need signal lights to keep traffic flowing and prevent accidents. Here's what the traffic light symbols ...

Traffic lights revolutionised road safety, beginning with a gas-powered signal in 1868 London. From the first electric light in 1914 to today's smart systems, these signals remain essential.

At first glance, traffic lights are stunningly simple: green means go, red means stop, and yellow means it’s about to turn red. But like cars, phones, and just about everything else on this ...

Traffic lights along a 32-mile stretch of U.S. 1 will stay green longer when buses approach thanks to special devices that ...

Aleksandar Stevanovic, a University of Pittsburg civil engineer who studies traffic control, told the magazine that although it's "great that Google is working" on implementing high-tech solutions ...

The traffic lights were slowed down. Traffic signals had been timed for cars and trucks at 25 miles per hour. The city reset them to 15 m.p.h.