Traffic lights might see a fourth signal as self-driving cars become more practical. Getty Images/iStockphoto The researcher’s latest plans differ from a 2020 model of a four-light intersection ...

Traffic lights haven’t changed much in the U.S. over the years. Cleveland debuted what is considered the first “municipal traffic control system” in 1914, historian Megan Kate Nelson wrote ...

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.

The team first introduced the idea of a fourth light in 2020, but realized a centralized system with a traffic light receiving AV signals and calculating the best route caused processing delays.

Traffic lights are a quintessential part of our everyday lives—especially here in the United States. They play a critical role in controlling the flow of traffic, able to turn the spigot of ...

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

LEXINGTON — Lexington's automated traffic-light system, which became fully operational in November after 10 years of installation, is already being credited by town officials with having helped ...