各有关单位： 随着我国经济社会的快速发展、城市化进程不断加快、车辆拥有量不断增加，城市交通拥堵、安全、环境和有序衔接等问题日益严峻。世界范围内，城市群与都市圈的交通问题也日益凸显。 为更好地...
The relevant units: with the rapid development of China's economic and social, with the accelerating urbanization, vehicle ownership increases, the urban traffic congestion, safety and environment and orderly cohesion problem is increasingly serious. Worldwide, the urban agglomeration and urban traffic problem is increasingly highlighted. To better...
