由于红绿灯作用，可以看到，在主干道上形成规则的向后传播的交通波。
Because of the effect of traffic lights, the regular traffic waves in the main stem, which spread backward, will be seen.
由于红绿灯作用，可以看到，在主干道上形成规则的向后传播的交通波。
Because of the effect of traffic lights, the regular traffic waves in the main stem, which spread backward, will be seen.
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