Highway Network Intelligent Coordinated Information Dissemination Model Based on VMS

Oriented to address abnormal traffic condition, such as adverse weather and traffic incidents, the Highway Network Intelligent Coordinated Information Dissemination Model based on VMS is proposed. This model contains two sub-models. The first is the traffic spatial impact range forecast model under abnormal traffic condition, which is established based on the traffic flow assignment model and traffic wave theory so as to provide selection criterions for VMS in highway network. In this sub-model, the impacts of different traffic organization strategies on equilibrium assignment theory are considered. Another model is the regional coordinated information generating model, which provides the regional dissemination strategies according to VMS classification based on VMS's function, position, and impact range of abnormal traffic condition. In this model, the VMS intelligent selection and the VMS coordinated information auto-generation could be achieved by providing efficient decisions to support a highway's network regional operation and management.