Urban rail transportation have unique advantages of large capacity,low wastage of energy and low pollution,which have decided that it will have been applied widely in the future.

• 城市快速轨道交通具有运量大、能耗低、污染小等多种独特优势,决定了其广泛应用的良好前景,但是其运输潜能的充分发挥必须辅助以良好的馈送系统和衔接换乘系统。