Dynamicclassified Methodbased Realtime Risk Audit of Traffic Flow

Abstract:

Considering the characteristics of directeffect and statetransfer among vehicles,the dynamicclassified method is first put forward to discriminate anisotropic and diversity of traffic flows.Based on vehicle travelling characteristics and intervehicles force,matrixes of relatedstate and traffic risk are introduced to analyze dangerous condition.Realtime risk index is then set up after constituting traffic flow riskgrades.Experiments on some freeway sections of highfrequency accident validate the relation between traffic flow risk index and historical accidents.