The reason of Chinese citys traffic jam have objective factor, but the more important is the traffic management isn t perfect.
中国城市交通拥堵的成因既有客观方面因素的制约，但更大程度上是由于交通行政管理不完善造成的。
The reason of Chinese citys traffic jam have objective factor, but the more important is the traffic management isn t perfect.
中国城市交通拥堵的成因既有客观方面因素的制约，但更大程度上是由于交通行政管理不完善造成的。
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