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 ...
They might be vertical, they might be horizontal, but otherwise, traffic lights have hardly changed in a hundred years. Red means stop, yellow means slow down, and green means go, a universal code ...
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