We’ve talked about this tiny gadget before: the Flipper Zero. Officially, it’s a $170 tamagotchi-fied hacking gadget with a sub-gigahertz radio and some accessory pins. Unofficially, it’s a menace’s ...

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 ...

Red and green traffic lights have been around since the 1800s, when British traffic officers used to rotate gas lamps that burned red and green to control the movement of mostly horse-drawn vehicles.

Here’s the truth that most drivers don’t think about: creating new traffic signals isn’t nearly as easy as it looks.