随着城市人口的增多和汽车的增加,城市交通问题日益突出。在许多大城市,由

With the increase of urban population and the increase of cars, urban transportation problems are becoming increasingly prominent. In many large cities, <br>due to the excessive amount of cars, often causing congestion and frequent accidents, air pollution was, transportation ask <br>questions has been brought to the city a serious impact on the socio-economic development. <br>Relative to the carrying capacity of the road network, the number of cars is too large, which induces traffic jams. To some <br>extent, traffic congestion is a product of automobile society. <br>Traffic congestion is particularly evident during peak hours when people commute to work . In many large urban centers, the peak traffic speed is only 16km per hour. Traffic jams <br>lead to serious waste of time and energy, affecting the efficiency of the city's economy. Big city circle road car still <br>continue to build, but also further increase the number of cars, and increase the car's road construction is likely to form a vicious cycle <br>loop, leading to more serious traffic congestion

With the increase of urban population and the increase of automobiles, urban traffic problems are becoming more and more prominent. In many big cities,<br>Due to excessive cars, often lead to traffic jams, frequent traffic accidents, air pollution, etc.<br>the problem has brought serious impact to the city's socio-economic development.<br>Compared with the carrying capacity of the road network, the number of cars is too large, which induces the traffic jam problem. From some kind of<br>Traffic jams are the product of the automobile society. Traffic jams during rush hour<br>This is particularly evident in many metropolitan centres, where peak-hour traffic speeds are only 16km/h. Traffic jams<br>This leads to a serious waste of time and energy, affecting the efficiency of the urban economy. The road is still on the road in the big city circle.<br>Continue to build, the number of cars also increased further, road construction and increase dwelling of cars may form a vicious<br>ring, leading to more serious traffic jams

With the increase of urban population and the increase of cars, urban traffic problems are increasingly prominent. In many big cities,<br>Due to excessive cars, traffic jams, frequent traffic accidents, air pollution, etc. are often caused<br>The problem has brought serious influence to the urban social and economic development.<br>Compared with the carrying capacity of the road network, there are too many cars, which leads to traffic congestion. From some<br>To some extent, traffic jam is the product of automobile society. Traffic jams during rush hour<br>Especially, in the center of many big cities, the peak traffic speed is only 16km / h. Traffic block<br>Lead to a serious waste of time and energy, affecting the efficiency of the urban economy. The car road in the metropolitan area is still there<br>With the continuous construction, the number of automobiles is further increased, and the construction of roads and the increase of automobiles may form a vicious cycle<br>Ring, causing more serious traffic jams<br>