Study On Method Of Transit Network Planning In Dalian City

Transit network planning is the main part of passenger transport planning in a city, which is important to resolve the general problems of traffic congestion. Based on the analysis of national and international theory and experience of transit network planning, here, some usual models are discussed and a method of network optimization which integrates theoretical analysis and strong manipulation is developed.This paper consists of five parts: analysis of current transit, forecast of transit demand, assignment of transit volume, network planning and numerical example of Dalian transit network. First, from the survey data of Dalian city, problems existed in transit network are analyzed. Based on current transit OD, the linear regression model validated newly and gravity model of double constraints are used to forecast transit demand. In the part of transit assignment, transit exchange area is introduced and capacity restriction method is improved to accord with passenger travel behavior. Then, after analyzing Dalian current transit, an optimization model on transit network is proposed in which the objective function is to maximize the corrected utility of transit corporations. Furthermore, classification of transit lines and transit exchange hinge are taken as restriction conditions, and a reasonable algorithm is developed. Finally, above models and algorithms are used to improve Dalian transit network, and a satisfactory result is obtained.