In May 2017, the Ministry of Land, Infrastructure, Transport and Tourism announced its "Public-Private ITS Concept and Road Map 2017," which describes the six levels of autonomous driving, in line with the definitions proposed by the SAE, from "Level 0 (manual driving)" to "Level 5 (full autonomy)." Currently, Level 2 (partial autonomy) technology, in which the system provides partial driver-assistance, such as vehicle-to-vehicle distance control and steering control systems is being implemented sequentially in commercially available vehicles.

  For the autonomous driving technologies exhibited by parts manufacturers at the Tokyo Motor Show 2017, many appeared to be products and technologies focused on Level 3 (conditional autonomous driving) and Level 4 (advanced autonomous driving). Level 3 conditional autonomous driving assumes that when the system is unable to continue driving in autonomous mode, the driver must be prepared to take back control of driving the vehicle. In Level 4, the system is in complete control of the vehicle, but this is limited to certain conditions, such as region, weather, and traffic.

  Devices such as cameras, sensors, and communications devices are essential to autonomous driving systems. In addition to conventional electronics manufacturers that supply vehicle equipment and suppliers that provide vehicle control system, various companies such as electronics and IT firms are now actively developing automotive technologies. Exhibitions such as sensing technology using 3D-LiDAR and millimeter wave radar, cockpits featuring HUD and driver monitoring systems, as well as services utilizing AI were exhibited, showcasing the development trends of various companies in anticipation of the realization of automated driving and future mobility.