城市交通是城市经济增长的重要条件,是城市正常运行的重要保证。近年来,天津市城市交通事业发展很快,城市道路面积扩大,机动车数量增加,交通运输能力增强,对促进经济和社会发展起着重要的作用。然而,与快速发展的经济相比,城市 Urban traffic is an important condition for urban economic growth and an important guarantee for the normal operation of cities. In recent years, Tianjin has witnessed a rapid development of urban transport, an expansion of the urban road area, an increase in the number of motor vehicles and an increase in the transport capacity, which plays an important role in promoting economic and social development. However, compared to the fast-growing economy, the city