Study on the Internal Development Law of Supply-demand Balance of Urban Road Traffic

The road traffic problem is growing worse and worse, its roots in the imbalance of road transport supply and demand. This article analysis the characteristics of traffic supply, traffic demand and supply-demand balance to make sure that the interval of supply-demand balance is exist, meanwhile make the total length of road net as a parameter then work with the level of service of the road net to built a interval model to work out the interval, then get the internal development law of supply-demand balance by the combination of qualitative and quantitative. After get the law, people can use it to optimizing the limit traffic resource of city, consummating the knowledge frame of transportation planning, at last to remitting traffic congestion and making it convenient for people to travel.