News > Traffic lights could have a 4th color in the future. Here's why.

Traffic lights could have a 4th color in the future. Here's why.

In a hypothetical future where autonomous cars trundle up and down our busy roads, traffic lights might have a fourth color installed, one added for the benefit of those self-driving vehicles. Researchers at North Carolina State University are proposing an additional white traffic light that would signal to drivers autonomous vehicles (AVs) are managing the upcoming intersection of traffic flow intelligently. The cars and trucks that are driving themselves won't need to 'look' at the white traffic light.