If the traffic density increases much above that, the flow pattern begins to become unstable.
如果车辆密度大幅高于上述数字，则车流模式开始出现不稳定现象。
The nonsymmetry of car density on two lanes has important influence on the traffic flow.
两车道上车辆密度的不对称性对交通流有重要的影响。
The nonsymmetry of car density on two lanes has important influence on the traffic flow.
两车道上车辆密度的不对称性对交通流有重要的影响。
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