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Question:

There are several traffic lights

There are several traffic lights

Answer:

When the yellow light is on, no vehicles or pedestrians are allowed to pass, but the vehicles passing over the stop line and pedestrians entering the crosswalk have been passed...
command light signal: when green light is allowed to allow vehicles and pedestrians to pass, but the turn of the vehicle must not impede the direct traffic and the release of pedestrians
raffic baton signal and hand gesture signal. (2) the role of traffic signal
What are the traffic signals? What are the roles? (1) traffic signals are divided into: Command light signal, crosswalk signal

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