二次过街信号设计对于行人通过大型信号交叉口具有非常重要的作用。
Designs on signal phases for twice crossing are very crucial to pedestrians when they are passing through a large signalized intersection.
二次过街信号设计对于行人通过大型信号交叉口具有非常重要的作用。
Designs on signal phases for twice crossing are very crucial to pedestrians when they are passing through a large signalized intersection.
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