PROJECT TITLE :
Why do drivers change route? effect of graphical route information panels
Studies that explore drivers' decision behaviour underneath the graphical route info panels (GRIPs) via the discrete selection models have rarely been reported. In this paper, drivers' route choice response to the GRIPs is quantitatively analysed by using the discrete alternative models through a case study of a real-life GRIP in Shanghai, China. A logit model for predicting the route selection probabilities is developed to capture the connection between the route choice likelihood, the motive force attributes and also the GRIP messages, respectively. The modelling results show that the drivers who have a bigger annual driving mileage, access the traffic information via the piece of email signs in way of life highly value the GRIPs and drive their automotive mainly for the commuting purpose are a lot of likely to divert from the initial route to the alternate route below the GRIP; a driver's perceived delay of the original route includes a positive impact on his diversion call under the GRIP; there exist variations within the GRIP response behaviour; the drivers are more doubtless to divert when the GRIP displays 'red' to point severe congestion on the initial route; the feminine drivers are more sensitive to 'red' and a lot of doubtless to divert.
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