Traffic lights are not as straightforward as you may think. For instance, Japan has blue traffic lights, and while it's common to see the lights arranged vertically, some U.S. states mount them ...

Traffic lights help traffic flow by directing specific lanes to go and others to stop. Some are more complex and include signals for buses. But at the end of the day, they're devices with red, yellow, ...

Some things are so ubiquitous that it's easy to forget they're designed for a reason. With more than 300,000 traffic lights set up across the United States, it's easy to take how they look for granted ...

Traffic lights have been with us since 1868, when the first gas-powered set was switched on in London. These lights used a semaphore system similar to those used by the railways of the day and ...

While we may be used to seeing cameras on top of traffic lights at major intersections, they're used for more than simply watching out for red-light runners. In fact, there are two main types of ...

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