Early traffic lights had only red and green, which unsurprisingly made intersections rather chaotic. Who invented the yellow ...

The year is 1995, and the Kingdom of Bhutan is about to experiment with something that has never existed in the country: its very first traffic light. But it would be up for just 24 hours before being ...

Today's traffic lights can be controlled by anything from standard traffic control computers to highly advanced AI-driven computer systems that are so "smart" they can predict what's going to happen ...