ZME Science on MSN
Engineers propose a fourth traffic light meant for intersections with self-driving cars
We all know the same old boring drill. You pull up to an intersection, the light turns red, and you wait. You stare at the bumper in front of you (leave that phone alone, I see you). When the light ...
For anyone who's ever been frustrated waiting at a red light when no other cars are coming — this article is for you.
Traffic lights follow the same green-amber-red order during the day, but at night, some of them switch to flashing certain colors. Why does that happen?
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