traffic lights

North Carolina may add a fourth color to traffic lights to have a big impact on driving experience

What if the next set of traffic lights you stopped at had four colors instead of three? In North Carolina, that’s an actual plan being explored by university engineers. They say a new light could help drivers know when self-driving cars are taking control at intersections. And if it works, it could make traffic faster, […]

Massachusetts’ new red light is so confusing you might not understand it, and one in four drivers run it

Drivers are stopping or going through the lights when they shouldn’t be

Some of the small cameras on top of traffic lights in America aren't for traffic enforcement at all

They’re not what you think they are