Analytical techniques about the supply and demand of urban road network

The equilibrium development about the supply and demand of urban road network is a quite important problem faced by urban construction and management department. Through analyzing the capacities of different urban road levels, the calculation method of urban traffic supply is advanced. The characteristics of different traffic models that exist in the incity and interurban traffic systems respectively are researched and the calculation models of urban traffic demand are put forward.The equilibrium status about the traffic demand and supply could be discussed and it can help the decision makers to make some relative policies.