Let’s explore the inner workings of traffic signals. The traffic lights and crosswalk signals at an intersection are only the public user interface, of course. The interesting stuff is going on ...

Anyone who spends time on the road -- even as a passenger -- is familiar with traffic lights. They're kind of essential for ...

How long does it take to install a new traffic light in the city of Joliet? The answer, in the case of the new traffic light ...