Traffic engineers are quietly working on a radical idea: adding a white signal to the familiar red, yellow, and green. Instead of signaling drivers directly, the extra light would tell humans when to ...

You’re running late to work in the morning and then you hit every single red light on the way. You’re cooked. It's not bad luck. There actually is someone to blame. A team of engineers, casually ...

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, ...