The Route Choice Simulation Problem Based On Travel Behavior

The traffic flow is the necessary factor to the traffic problem, which cannot be separated from the travelers. The travelers have the characteristics of subjective apiration, rational judgment, difference and so on. The analysis of psychological characteristics and judgment process and the establishment of the route choice models are conducive to research formation, characteristics and the influence factors of the traffic flow on road network. Based on the evolution process, we can analyze many factors in the travel process. Thus it can provide reference and basis for for traffic control and management. Research on the route choice evolution problems has important theoretic value and practical significance.Around related problems about the route choice evolution, this paper focused on the research as followed:1,In this paper the Logit weighted updated rules, the Logit weighted average updated rules and the Probit accumulative updated rules are designed based on the cumulative Logit update rules. The stability of the evolution results is analyzed when the OD quantity is fixed or variational, and the results are compared and analyzed with the flows of SUE and UE. When the OD demands are random variables or the function of the travel cost, the model is further improved. For the fixed variance of the OD demands, the changing mean can affect the speed of achieving stability and the flow. If it get big enough, the rational degree of the travelers will reduce. When the change of the OD demand change is related with the function of the travel cost, the travelers are more rational and the network flows are more stable.2,Considering the multiple travel modes in the ordinary life, the nested Logit model is introduced in order to avoid the characteristics of the IIA Logit model. The model that describes travelers' choice about travel mode and route by being studied the characteristics, behavior and the ATIS which influences the decision. With comparing the evolution characteristics of different travel modes and analyzing the various parameters it can be concluded that the flow of the bus is smaller when the the randomness of travel is more obvious. Considering the evolution characteristics of the multiple travel modes with the involvement of the government, the regularity and reason are analyzed. That shows that results become bad if the excessive of the policy efforts is excessive strengthened. 3,Research the influence of the congession pricing and establish modes based on the path and section. Analyze the evolution of the route choice by adjusting the extent of the congession pricing. If there exsit different travel modes, we can establish the mode with pricing on car. It is concluded that the travelers choose the route according to the level of the pricing not to the state of the network when the influence of the pricing is big enough;the flow of the car become small and the flow of the bus become big if the car was priced. Also, it can be concluded that there is a linear relationship between the pricing strength and the implementation result, etc.