因保管不善致使质物灭失或者毁损的，质权人应当承担民事责任。
1·It brings up the method of calculating the length queue and evanesce time of queue, while the consideration to vehicles space length and followup car flow arriving in period of the red-light.
同时还提出了考虑排队时车辆空间长度以及后续车流到达情况下的红灯排队长度计算公式和车辆排队消散时间计算方法。