Optimal Design Of Feeder-bus Network Related To Urban Rail Transit

To solve increasingly serious urban traffic problems, many large cities at home and abroad are actively building integrated public transport system, in which urban rail transit serves as backbone passenger transport network, coordinating with bus transport etc. travel modes. With different characteristics and complementary functions, rail transit and bus transport are two main modes in the public system, transfer service between which is a very important aspect to integrate the public system.Based on analysis and summary of existing research achievements, this paper systematically analyses connection and operation between urban rail transit and bus transport under the idea of public transport integration, points out that feeder-bus network-design problem is the determination of feeder-bus lines plan composed of feeder station, line route and operation frequency. On the above basis, this paper analyses passenger travel plan on the transfer network which is composed of feeder bus schedule and rail transit service, includes the transfer cost into passenger travel cost and establishes feeder-bus network optimization model based on transfer network (FBNDP-TN) to minimize passenger travel cost and feeder bus operation cost. In this model, the passenger demand do not be limited to a single destination (M-to-1), but extended to the distribution between every origin and every destination (M-to-M). Take classical network of FBNDP and network according with our county bus transport operation practice as test case, we design genetic algorithm strictly restricted by frequency constraint to make feeder-bus network under different passenger demand situation, and analyze network change law influenced by different passenger demand. The results show that the optimization method is effective and adapt to different city networks, passenger demand distribution has significant influence on feeder-bus network construction.