For the Advanced Safety Vehicle(ASV) project proposed by Ministry of Transport, following three themes were chosen according to the analyzed results of traffic accidents data and each theme was promoted with an individual ASV for efficiency of study. Accident prediction and prevention technology with an intelligent navigation system (Honda ASV 1). Collision avoidance by radar technology to compensate for driver errors in perception and judgment (Honda ASV 2). Pedestrian protection safety technology to prevent accidents and reduce injury (Honda ASV 3). The fundamental function of the technology that should be comfortable to human beings and some of them are being studied for practical use.