A brief history of the traffic light and why we need a new colour aljazeera.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from aljazeera.com Daily Mail and Mail on Sunday newspapers.
As cars and trucks get smarter and more connected, the humble lights that have controlled the flow of traffic for more than a century could also be on the cusp of a major transformation.
Researchers say an increase of more smart and connected vehicles on U.S. roads could lead to big changes for traffic signals. Several studies are currently exploring different technologies and methods to connect smarter vehicles with traffic light systems.