Study On The Model And Method Of Traffic Impact Area Based On Disaggregate Model

the property of urban land utilization being changed or Urban land development (be called planning item) will lead to the change of traffic of city, This variational traffic may bring traffic impact on the city's road which surround this development project ,The area which being affected obvious is called traffic impact area. The forecast of the traffic impact area is an important step in traffic impact analysis.First,paper summarizes the traffic impact area method which have existed. And paper point that the analysis on the mechanism which brings traffic impact on the road is the precondition for forecast planning project's traffic impact area.Second, three kinds land development project which have biggish traffic impact on city road were selected for the subject in paper, it is the shopping center land development,the residential sub-district land development and the Logistical Centre land development. Study on the mechanism which bring traffic impact on the road of the three kinds land use result in the conclusion that how to forecast traffic distribution on city road is one precondition for forecast traffic impact area of planning shopping center and Logistical Centre; how to forecast traffic is one precondition for forecast traffic impact area of planning shopping center and residential sub-district.Then, a new combinational Stochastic User Equilibrium model is founded to the shopping center land development project and Logistical Centre land development with Disaggregate Model. With those assign model, the method which forecast planning shopping center and Logistical Centre's traffic impact area is established. For the planning residential sub-district.Paper constructs a traffic model which from discrete, and a traffic impact model which base on instantaneous line fountain diffuse model. Then, a new method for forecast planning residential sub-district being established with those model. In the end, the paper forecast the Chongqing wealth center's traffic impact area with the impact area method of planning residential sub-district.