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Study On Vehicle Routing Choice In Urban Traffic Under Uncertainty

Posted on:2007-06-19Degree:DoctorType:Dissertation
Country:ChinaCandidate:Y ZhangFull Text:PDF
GTID:1102360212959962Subject:Management Science and Engineering
Abstract/Summary:PDF Full Text Request
With the increasing intensification of market competition at the information age, the value of time is also increased. Many enterprises realize that punctual serveice is an important measure to improve the ability of market competition, which indicates the level of serveice. On the contrary, the condition of transportation in urban is uncertainty, such as time-dependent traffic flow, occasionally happened incident, and unexpected traffic jam. All these facts decide travel time on route is radom. There only exists stochastic shortest route (SSR) from the origin to the destination in the urban taffic networks with many origins and many destinations. So, different travelers will have different behaviors in routing choice which, including route choice and departure time choice, will change with travel importance, time to be used for route, traveler's familiarity to the networks and the range of travel time. As an important approach to realize travel rationalization, research on vehicle routing choice under uncertainty will decrease traffic jam, protect urban envornment, reduce travel cost, improve operation efficiency and enhance customer satisfaction comprehensively. Since SSR problem tightly connect theory of Operations Research with practice of production, which was named as one of the most successful areas in Operations Research in the past decades. Up to the date, few researchs have been made on the connection between SSR choice and travelers' behaviors in urban traffic under uncertainty, and many dissatisfactory items await amelioration and modification. In this dissertation, a series of vehicle routing choice under uncertainty are analyzed thoroughly.The main contents of this dissertation are as follows:In chapter 1, based on summarizing relative references, we retrospecte domestic and foreign research on vehicle routing choice, point out shortcomings of research on this problem and find some potential areas of research.hi chapter 2, with assumption of travel cost minimized, the dynamic user optimal (DUO) assignment models based on the ideal and the instantaneous impedance is compared. According to the travelers' routing behavior, this paper formulates an ideal DUO assignment model using the variational inequality approach. The presented model complies with the DUO equilibrium condition, in which for each origin- destination...
Keywords/Search Tags:stochastic shortest vehicle route, dynamic user optimal assignment, route choice behavior, prospect theory, nested diagonalization algorithm, Empirical study, heuristic algorithm, Genetic algorithm, GERT algorithm
PDF Full Text Request
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