Development and Evaluation of ITS Information Communication System for Electric Vehicle

Electric Vehicle (EV) has a restriction for the distance which it can drive by one battery charge, and under the present situation there are some problems such as there being few installation places for the battery charge equipment. To promote the introduction of EV, the ITS services corresponding to these problems and characteristics are required. "ITS information communication system for EV" we propose in this paper, provides functions for observing the amount of battery remainder and leading to surrounding battery charge stations while driving, and also efficient battery charge management. Concretely we develop the protocol that connects the wide area network and the road to vehicle communication with the in-vehicle network, and also the in-vehicle system and the roadside system whereby reading and writing vehicle data from center and roadside are achieved. As a result of the feasibility test, the sense of security in the EV and the convenience and the amenity in the battery charge stations will be improved. The effectiveness of the services and practical use of the system have been confirmed.