Recently, China National Development and Reform Department released ¡¶the proper regulation on energy conserving¡·. The paper indicated the goverment will put more cost-effective on developing the city pubilc traffic system. suppress the excessivly using on city traffic resources of private motor vehicles. Build up the city traffic model in the big city like rely on the road traffic while making the rail transportation as subsidiary, making the private flexible traffic as supplement, also developing the bicycle traffic. In the medium and small city, make the road and private traffic as the mainly direction.