Add Yahoo as a preferred source to see more of our stories on Google. You might think traffic light systems are fairly basic. After all, electric traffic signals first appeared all the way back in ...

Seeing a camera at a stoplight doesn't automatically mean you're being ticketed. Many intersections use similar hardware for ...

Drivers often overlook the small black boxes near intersections. But the technology inside them is cleverly changing how traffic lights react to the road.

Traffic lights might seem like they let cars stop or go randomly, but that's not always the case. Many of them use special ...