|
Principal User Services |
1. Prevention of collisions with obstacles |
2. Lane-keeping (straight road) |
3. Lane-keeping (curve) |
4. Prevention of crossing collisions |
5. Prevention of right turn collisions |
6. Prevention of collisions with pedestrians crossing streets |
7. Maintenance of safe headway |
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| Roads covered | |||||||||||||
| Type of road |
Ordinary roads & expressways |
Ordinary roads & expressways |
Ordinary roads & expressways |
Ordinary road |
Ordinary road |
Ordinary road |
Expressway |
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| Section of road |
Single-lane road & intersection |
Single-lane road & intersection |
Single-lane road & curve |
Intersection |
Intersection |
Single-lane road & intersection |
Single-lane road |
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| Cruise support level | |||||||||||||
| Support behavior |
Longitudinal behavior |
Lateral behavior |
Longitudinal behavior |
Lateral behavior |
Longitudinal behavior |
Crossing behavior |
Crossing behavior |
Crossing behavior |
Longitudinal behavior |
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|
Curve entry support |
Lane departure prevention support |
Support at approach |
Support at vehicle start |
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| i | Information |
Yes |
Yes (in inclement weather only) |
Yes |
Yes (in inclement weather only |
Yes |
Yes |
Yes |
Yes |
No |
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| Warning |
Yes |
Yes |
Yes |
Yes |
Yes |
No |
No |
No |
Yes |
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| c | Operational support |
Yes |
Yes |
Yes |
Yes |
Yes |
No |
No |
No |
Yes |
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| Requirements | |||||||||||||
| Maximum speed covered | |||||||||||||
|
Ordinary road: 70 km/h Expressway: 120 km/h |
Ordinary road: 100 km/h Expressway: 120 km/h |
Ordinary road: 100 km/h Expressway: 120 km/h |
Narrow road: 70km/h Main road: 70km/h |
Narrow road: 5 km/h Main road: 70 km/h |
Own-vehicle road: 30 km/h Opposing road: 80 km/h |
Ordinary road: 70 km/h |
Expressway: 120 km/h |
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| Necessary information | |||||||||||||
| Variable information | Own-vehicle information (position, cruising, speed, etc.) Obstacle information Road surface information | Own-vehicle information (position, cruising speed, etc.) Road surface information | Own-vehicle information (position, cruising speed, etc.) Road surface information | Own-vehicle information (position, cruising speed, etc.) Road surface information Crossing vehicle information (position, cruising speed, etc.) | Own-vehicle information (position, cruising speed, etc.) Road surface information Crossing vehicle ?j | Own-vehicle information (position, cruising speed, etc.) Road surface information Pedestrian information (position, etc.) | Information on vehicle ahead (position, cruising speed, etc.) Own-vehicle information (position, cruising speed, etc.) Road surface information | ||||||
| Information distinctive of area | Road shape information (longitudinal/lateral incline, curve rate, etc.) | Road shape information (longitudinal/lateral incline,etc.) | Road shape information (longitudinal/lateral incline, curve rate, etc.) | Road shape information (intersection shape, incline,etc.) | Road shape information (intersection shape, incline,etc.) | Road shape information (transverse incline, curve rate, etc.) Pedestrian crossing information (position, width, etc.) | Road shape information (incline, curve rate, etc.) | ||||||
| Information distinctive of vehicle | Acceleration performance (model, braking performance, etc.) | Steering performance (ceiling in yaw rate, etc.) | Acceleration performance (model, braking performance, etc.) Steering performance (yaw rate ceiling, etc.) | Acceleration performance (model, braking performance, etc.) | Acceleration performance (model, braking performance, etc.) | Acceleration performance (model, braking performance, etc.) | Acceleration performance (model, braking performance, etc.) | ||||||
| Information gathering covered | |||||||||||||
| Vehicle | Ordinary road: Parked, backing, or slow-speed vehicle with four wheels or larger Expressway: Parked vehicle with four wheels or larger |
No |
No |
Vehicle with two wheels or larger cruising through intersection | Vehicle with two wheels or larger coming in or making left turn |
No |
Vehicle with four wheels or larger ahead on own lane | ||||||
| Human | Ordinary road: People on road, excluding pedestrians (crossing road, working, etc.) Expressway: None |
No |
No |
No |
No |
Man or bicycle crossing street |
No |
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| Obstacle | Object comparable to vehicle with four wheels in size |
No |
No |
No |
No |
No |
No |
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| Road surface condition | Four stages: Dry, wet, snow-covered, and frozen | ||||||||||||
| Range of information gathering (excluding own-vehicle information) | Ahead of own vehicle 160m (ordinary road) 300m (expressway) |
No |
No |
Crossing vehicle information: Inside intersection & more than 130m before crossing lane | Incoming vehicle information: Inside intersection & more than 100m before incoming lane | Pedestrian crossings, near crossings, and locations with frequent accidents involving pedestrians | 100m head of own vehicle position (expressway) | ||||||
| Range of provide information | |||||||||||||
| Starting point of provide information | Limit in timing for driver to respond to information service and avert danger with normal deceleration or steering. However, timing in support at vehicle startup in prevention of crossing collisions to be stop before entering an intersection. | ||||||||||||
| Range of service | From start of providing information to passing target obstacle Ordinary road: 130m Expressway: 300m | From start to end of providing information; distance not specified | From start of providing information to exit from curve section Point of curve entry 170m before (ordinary road) 200m before (expressway) | From start of providing information to exit from intersection 130m before intersection | From start of providing information to exit from intersection 40m before intersection | From start of providing information to passage from pedestrian measurement range 130m before point of measurement | From start of providing information to end of service Distance not specified | ||||||