Question

information about street signals​

Answer 1

Explanation:

Traffic lights, traffic signals, stoplights or robots are signalling devices positioned at road intersections, pedestrian crossings, and other locations to control flows of traffic. The world's first traffic light was a manually operated gas-lit signal installed in London in December 1868.

Answer 2

Traffic light,traffic signals,stoplights or robots are signalling devices positioned at road intersections, pedestrian crossings , and other locations to control flows of traffic.The world's first traffic light was a manually operated gas-lit signal installed in London in December 1868.

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