These simulators are showing researchers that traffic improves with the presence of AVs and a fourth traffic light and that fuel consumption is much lower as there is much less stop-and-go movement.

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.

Each traffic signal light has a life cycle of about 15 years until it needs to be serviced or replaced. The lights are out there in the elements, and bounce around in high winds, rain or ice, so ...

One councilman wants to see traffic signals across the city upgraded so drivers do not spend extra time waiting for a light to change from red to green.Ward 1 Jackson City Councilman Ashby Foote said, ...

A security researcher says he found a flaw in a traffic light controller that would potentially allow malicious hackers to change the lights and create traffic jams. Andrew Lemon, a researcher at ...

A new traffic signal will be added to the stretch of U.S. Highway 72 between Indian Springs Drive and Sky Park Road.

Drivers traveling along South Rampart across Canal Street have just 10 seconds to make it through the stoplight.