Abstract
The purpose of this study is to show the effects and benefit of the travel time reliability information for travellers on urban expressway. This study investigates how the travel time information and its reliability information affect travellers' departure time choice behaviour and reduction of travel costs. In order to deal with effects of information on variability of travel time, this study describes travellers' departure time choice behaviour as the scheduling approach based on the expected utility model. SP survey using the Web based survey system is conducted to the Hanshin Expressway in Japan. Drivers' preferences of departure time choices are obtained when the travel time and its reliability information are provided. Characteristics of departure time choice when the information is provided to the travellers are analysed by using the proposed model. The results show that the reliability information is preferable for the travellers. The reliability information contributes to improve travel cost when the standard deviation of the variability of travel time is more than 10 minutes.
