Traffic lights in the US are typically programmed to get as many vehicles through a roadway as possible. But priorities are shifting: A growing number of cities are are using them to change driver ...

Small cameras mounted on top of traffic lights have become a pretty common sight in the U.S., as they can be found in almost every state. It continues to get more common, as the number of traffic ...

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, ...

Look closely, and you might find that there are more variations in traffic lights than you realized. Some have white lights that aren't meant for car drivers, while others have inconspicuous white ...