Multi-criterion Route Choice Behavior Analysis Considering Travelers' Bounded Rationality

Route choice is the core problem of network traffic flow research.The study of traveler's route choice behavior in networks is helpful to deepen people's understanding of travel features,and also plays an important role in transportation management and control.Considering that travelers' route choice behavior is affected by many factors.Moreover,travelers' decision-making process is not perfectly rational behavior.This thesis focuses on the multi-attribute route choice behavior considering travelers' bounded rationality.Based on regret theory,mental account theory and multi-objective equilibrium method,the behavior characteristics and decision-making process of travelers under the influence of multiple attributes are analyzed.The route choice models are constructed accordingly.On this basis,the equilibrium traffic characteristics and dynamic evolution process of the network are studied from the perspective of theoretical modeling and simulation analysis,respectively.More details of this thesis are summarized as follows:(1)Considering travelers' regret aversion psychology in travel decision-making,this thesis introduces the research framework of regret theory into travel analysis.Assuming that travelers simultaneously consider travel time and monetary cost(road toll)as decision criteria,each traveler chooses a path that minimizes his own perceived regret.On this basic,this thesis established the corresponding bi-attribute regret-minimization user equilibrium(BRmin UE)model.Compared with two traditional models that consider travel time and money cost,results show that VOT based generalized cost user equilibrium(GCUE)is a special case of BRmin UE under certain conditions,and the solutions of GCUE and BRmin UE all belong to Bi-objective user equilibrium(BUE).Through a specific example of tolled road network,the equilibrium traffic distribution under different models is calculated,and the behavior characteristics of travelers' route choice under different models are analyzed.(2)Considering the traveler's cognitive heterogeneity of travel time and monetary cost(road toll),this thesis studies the route choice behavior in tolled road networks with degradable road capacity.Among them,the cognitive heterogeneity of travel time is characterized by the risk attitude of travellers on travel time fluctuations.That is,travellers who have different travel time reliability requirements are willing to pay different extra buffer times.The cognitive heterogeneity of the perception of monetary cost is reflected in the individual's mental account set for the travel category.Since different individuals have different mental budgets for travelling,the same road pricing scheme may lead to different psychological experiences for travelers.On this basis,according to the perceived heterogeneity of the traveler's time and cost,travellers are divided into different categories,the generalized perceived travel cost of different categories of travellers is constructed,and the corresponding multiple user classes route choice model is established.A numerical example is given to analyze the influence of different factors on the route choice results and network performance.The research results have certain enlightenment significance for road toll management and other aspects.(3)Relax the assumption of travelers' preference for each attribute,this thesis considers the attributes that influence travel decision as separate goals,and consider the bounded rationality of travel decision under the framework of bi-objective user equilibrium.By introducing the concept of indifference band,a bi-objective user equilibrium model with bounded rationality of travel time is constructed(BRBUE).Compared with the traditional bi-objective equilibrium(BUE)under the framework of individual perfectly rationality,this study shows that all BUE solutions belong to BRBUE solutions.In view of the difficulty of obtaining BRBUE solutions,three heuristic traffic adjustment rules are proposed: time preference,cost preference and comprehensive preference.The behavioral significance of different adjustment rules is analyzed by a specific example.On this basis,a bi-objective version of PASP model considering bounded rationality is constructed.The flow adjustment process is analyzed through a specific example.