Friday, October 12, 2018

THE TRAFFIC SIGNAL

       THE TRAFFIC SIGNAL

https://youtu.be/DJ1YuLK6A5k

Traffic signals change from green to yellow to warn approaching motorists that the signal is about to turn red. The length of the yellow signal depends on the speed limit of the road. Most urban intersections have a yellow time of four to six seconds. The yellow signal means stop if it is safe to do so.

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