The rapid increasing of the private car not only impulses the development of the city economy, but also brings very serious transportation problem. To mitigate the pressure of car transportation, the private car quantity must is reasonably programmed.

• 城市私人小汽车保有量的迅速增长；在带动城市经济发展的同时也带来了非常严重的交通问题；为了缓解小汽车的交通压力；必须合理规划私人小汽车保有量.