Study on interaction between passengermovement and hub transportation environment should be done on three levels, and be applied on hub service evaluation.
提出从微观、中观、宏观层面研究乘客活动与枢纽交通环境的交互作用，并应用于枢纽服务的衡量与评价。
2
When fires break out in a passenger carriage, the movement of the smoke directly threatens safety of passengers and leads to great casualties and enormous property loss.