Prediction Model of Freeway Network Traffic Incident Radiation Scope

Abstract:

Prediction model of freeway network incident radiation scope considered about on-off ramp was proposed based on traditional closed segment wave models. According to the different waves resulted from each phase of incident duration, six kind of situations of freeway network incident radition scope were analyzed and formulated, which could depict the interaction among traffic waves well. Then the traffic-wave class was created using object-oriented programming to simulate the whole processing of incident wave radiation in the freeway network, and GIS (Geographic Information System) map was played up to show the situation of radition scope. Finally the AIMSUN simulation test result indicates that this network radiation prediction model could represent actual incident influence range when the initial traffic volume is not extremely high, and its error analysis was carried out.