Introducing the white light: The following can be considered a breakthrough in developing purely autonomous cars. To further illustrate this strategy, we provide the proposed fourth color, white, ...

(Before we answer that, here's why our own traffic light colors are red, yellow, and green.) That’s when you see things like ...

app on their smartphones get a voice-activated message when they approach a traffic light equipped with the system via Bluetooth telling them what color a light is. The device, which has a ...