Traffic of the future

Why researchers are calling for a fourth traffic light color

Red, yellow and green may no longer be enough to successfully control traffic in the future.

(Bild: janvier - stock.adobe.com)

Red, yellow and green - these are the colors of traffic lights as we know them today. But scientists in the USA are now proposing a fourth traffic light color to take account of the changing nature of traffic.

Humans are still the dominant species in traffic, thinking and steering from their place behind the wheel. But with increasing automation, computers are set to take over and vehicles will one day be able to navigate the traffic jungle completely autonomously.