The color of the traffic light, Red indicates a stop or a danger sign, yellow indicates caution, and green indicates you may start walking with caution. Typically, red lights contain some shades of orange, and green lights contain some shades of blue.
Each installation of a traffic light aims to have one or more of the following functions: to obtain an orderly traffic movement, to increase the traffic capacity at crossroads, to reduce the frequency of certain types of accidents. The whole world must use the same traffic lights in terms of colors, namely red, yellow and green.
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