Study On The Optimization Of City Suburb Bus Operation In Shijiazhuang City

The service quality of urban public transport is directly related to residents trip and political life,economic life. So, the research about operation optimization of bus line is beneficial to facilitate the residents travel and push forward urbanization process.After extensive consult to related literature, the author made a review of operation optimization of bus line. Research results at home and abroad in departing time interval, the operation schedule for public transit lines and vehicle scheduling were introduced respectively. Also, the research results were summarized. Then, it briefly introduced the related theories of operation organization of public transportation such as rule of passenger traffic flow,operation plan, dispatching operation. Among them, specific business of urban public transport and terms were described in detail.Investigation and analysis on operational situation of bus line at the suburb of Shijiazhuang city was carried out with the method of questionnaire. First, investigation scheme was simply introduced such as the investigation content, investigation method choice, the decision of investigation way, sampling rate, and so on, then, Survey data such as passenger basic attribute, trip characteristics of residents, service effect were analyzed .According to the investigation results, the author has analyzed the main problems in operation and proposed some suggestions such as giving priority to the development of public traffic at the suburb of Shijiazhuang city, increasing transit network density, optimizing operation dispatcher. The paper made some innovations on optimal model and its solution. Optimal model of urban bus frequency was set up giving consideration to passenger demand and bus company benefits, and a solution method has been put forward for one-dimensional search. Taking 15 bus lines at the suburb of Shijiazhuang city as an example, optimization was carried out using the previous model. The results showed that it can improve service level but not affect the bus company benefits. Also, the scheduling method is proposed when the model is failure.