| Section4 ITS deployment progress in Japan |
Establishment of comfortable and safe cruise environment |
- Incident Detection System
- User Services : 5) Danger warning
- Specific User Services :(12) Danger warning of vehicles ahead and others
Frontal collisions and collision with guard rails frequently occur in the Chigira District of Sagamiko-machi of Tsukui-gun, Kanagawa Prefecture, where the National Highway No. 20 runs through steep mountainous terrain, because of the narrow widths and continuous sharp bends.
In addition, since there are many blind curves along such sections, serious accidents could occur if incidents such as fallen objects or stranded vehicles are not detected quickly.
In October 2000, the Incident Detection System was introduced in the sections with blind curves on this highway, to help prevent head-on collisions by informing the driver that a vehicle is approaching from the opposite direction; help prevent secondary collisions by informing the following vehicles of accidents ahead of them; and help the road administrator quickly remove the obstacle on the road caused by such accidents.
(Sobu National Highway Work Office of the Kanto Regional Construction Bureau, Ministry of Construction)
Outline of the system
Provision of warning message at a blind curve
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