Research On Traffic Dynamic Information Dissemination Strategies

With the rapid urbanization and the sharp increase in the number of cars, the urban traffic condition is deteriorating, and the problem of the congestion is getting worse. Traffic congestion leads to travel delays, traffic accidents, poor environment, resulting in enormous economic losses. It has become a restriction factor of the normal exertion of the urban functions and the sustainable development.In the case of the increasingly serious traffic congestion, motor vehicle travel are able to make effective use of the existing road system, it has become an important means of traffic management, which disseminate traffic information for the vehicle travelers. Therefore, ATIS has a growing concern. However, traffic information dissemination strategies have relations with between the compliance rate of the vehicle travelers obtaining information and the trust degree of ATIS. Therefore, the use of the effective, appropriate road traffic information dissemination strategies will help to improve the performance of ATIS, to improve the existing traffic operation conditions, to improve the road network efficiency.According to the related researches, the vehicle travelers'traffic information demand and travel behavior data are obtained by the stated preference survey for the analysis of travel behavior based on traffic information. On the basis of the influence of traffic information on travelers'behavior, dynamic information dissemination strategies were researched. The contents of the paper are as follows:1) the research on motor vehicle travelers'traffic information demandA SP survey questionnaire for the nationwide vehicle travelers was designed. Based on the actual survey data, the database of the vehicle travelers information demand was established, and a survey data was analyed in detail. Finally, the vehicle travelers information demand was obtained, which provided the data foundation for traffic dynamic dissemination strategies. It suppled the actual survey data of the traffic information demand which established database of the vehicle travelers information demand.2) The influence factors of vehicle travelers'departure time choice bahavior The influence factors data of departure time choice was obtained by SP for the nationwide vehicle travelers. The database of departure time choice behavior was established based on the actual survey data, which added the data gaps of the influence factors of vehicle travelers' departure time choice behavior. The overall object and the typical object of departure time choice behavior model had been estimated by mixed logit model, which compared with departure time choice behavior model established by binomial logit model and binomial probit model. The key influence factors of vehicle travelers'departure time choice behavior were obtained. The methods were proposed, which predicted and estimated vehicle travelers' departure time choice behavior by SP data. It provides a theoretical basis for traffic information dissemination strategies. 3) The influence factors of vehicle travelers'route choice bahavior The influence factors data of route choice was obtained by SP for the nationwide vehicle travelers. The database of route choice behavior was established based on the actual survey data, which added the data of the influence factors of vehicle travelers'route choice behavior. The overall object and the typical object of route choice behavior model had been estimated by mixed logit model, which compared with route choice behavior model established by binomial logit model and binomial probit model. The key influence factors of vehicle travelers'route choice behavior were obtained. The methods were proposed, which predicted and estimated vehicle travelers'route choice behavior by SP data. It provides a theoretical basis for traffic information dissemination strategies.4) the research on traffic dynamic information dissemination strategiesOn the basis of the traffic information demand of vehicle travelers and the impact of traffic information on trip behavior, the object and content, the time interval, the spatial location, dissemination methods and means of providing information were determined.The research contents, methods and conclusions are useful exploration for traffic dynamic information dissemination strategies. It can provide theoretical basis for ATIS, and provide important theory basis for traffic management.