Question

speech on traffic lights

Answer 1

Traffic lights change their colors in the same order every time. In most English-speaking countries, traffic lights usually change in this order:

Red light on: This tells drivers to stop.

Green light on: This means the driver can start driving or keep driving.

Yellow light on: This tells drivers to stop when it is safe to, because the light is about to turn red.

Garrett Morgan, an African-American inventor, invented one of the first traffic lights. He was one of the first people to get a patent for a traffic light.

William Potts, a police officer, invented the first traffic light with three colors.

Answer 2

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