Section4 ITS deployment progress in Japan

Toward practical use of the Smart Cruise System

- The seven services to be provided
For the Smart Cruise Systems, following seven services were chosen based on their effectiveness to reduce accidents, to be launched sequentially starting from 2003:

  1. Support for prevention of collisions with forward obstacles;
  2. Support for prevention of overshooting on curve;
  3. Support for prevention of lane departure;
  4. Support for prevention of crossing collisions;
  5. Support for prevention of right turn collisions;
  6. Support for prevention of collisions with pedestrians crossing streets;
  7. Support for road surface condition information for maintaining headway etc.
These seven services effectively reduce the risk of driver-induced accidents by two-thirds (Note: this figure is only applicable for good drivers who are safety-conscious).


Name of Service Description
1.Support for prevention of collisions with forward obstacles Notification to vehicle: detects vehicles, headway objects, etc. in poor visibility. Vehicle gives driver information, warning and operational support.
2.Support for prevention of over shooting on curve Notification to vehicle: detects the distance and shape of curves ahead before approaching. Vehicle gives driver information, warning and operational support.
3.Support for prevention of lane departure Supplementation to vehicle: lateral direction information from lane markers which were installed in the road. Vehicle gives driver information, warning and operational support.
4.Support for prevention of crossing collisions Notification to vehicle: detects the approaching vehicle with a right of way at intersection. Vehicle gives driver information and warning.
5.Support for prevention of right turn collisions Notification to vehicle: informs vehicle of intersections where right turns are possible and detect on coming vehicles. Vehicle gives driver information.
6.Support for prevention of collisions with pedestrians crossing streets Notification to vehicle: detects pedestrian crossing. Information service from vehicle to driver. Vehicle gives driver information.
7.Support for road surface condition information for maintaining headway etc. Notification to vehicle: follows up on information such as road surface conditions. Vehicle utilizes this data on maintenance of headway and other services.


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