Traffic engineers are quietly working on a radical idea: adding a white signal to the familiar red, yellow, and green.

Many cities are replacing their incandescent traffic lights with LEDs, despite the higher initial cost. Here's why that's actually a good idea.

After years of delays and debate, partial funding has been secured for a traffic signal at a busy intersection near a Lehighton Area School District campus that was originally supposed to be ...

The traffic signal on 5th and 6th Avenue NW and North Broadway in Minot will go dark starting Wednesday.

What do you think of a fourth traffic light color being added to traffic signals for self-driving vehicles to help control traffic flow? I get that one day a bunch of connected autonomous cars may ...

A “white light” added to traffic signals could enable self-driving vehicles to help control traffic flow—and let human drivers know what’s going on. In computational simulations, the new approach ...

SCRANTON – In the works for years, plans to upgrade traffic light signals at three busy intersections finally have a green light to move ahead. In recent years, the state Department of ...

Red and green traffic lights have been around since the 1800s, when British traffic officers used to rotate gas lamps that burned red and green to control the movement of mostly horse-drawn vehicles.