Method of Traffic Analysis Zone Partition for Traffic Impact Evaluation

In order to predict and analyze the attributes of macro traffic flow on road network and micro traffic flow at intersection accurately during the traffic impact analysis,a method of combining traffic volume distribution model with traffic simulation is developed.First,based on the Geography Information System(GIS),Voronoi diagrams are used for traffic analysis zone(TAZ) partition,and the attribute data is also partitioned correspondingly. Then,Multiplicative Competitive Interaction(MCI)model is adopted to estimate the new OD matrix.As a result,the output of traffic demand model can be input to micro traffic simulator directly to simulate and analyze the micro traffic flow.Finally,a numeric test is done to show the validity and accuracy of the presented method.