Abstract
The model system of individuals' reaction to unusual traffic network condition is developed in order to evaluate alternative means of providing public information of the condition. Under unusual traffic network condition the heterogeneity of recognition of traffic condition across individuals can not be ignored. The endogenous variables of the model system are indicators of recognition of and reaction to, the unusual traffic condition. The parameters contained in the model system are estimated using trip data during the Hanshin Expressway Ikeda Line closure. The model system provides better fit to the data than a model that does not consider an individual's recognition of traffic condition. The parameter estimates indicate that fliers and toll free telephone information service raise the level of recognition more than do the other media. The sensitivity analysis indicates that the model system can evaluate means of providing public information of the road condition from aggregate viewpoints, and that combining multiple media raises the level of recognition.
