{
  "$type": "site.standard.document",
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  "description": "An obstacle collision prevention system which can effectively prevent a collision even when an AHS car (2) is running in the \"restricted field-of-vision zone\" or when a vehicle running ahead suddenly reduces a running speed or stops, said system comprising an on-road processing facility, a…",
  "path": "/patents/1113318",
  "publishedAt": "2001-05-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G08G1/164",
    "DIRECTOR GENERAL OF PUBLIC WOR [JP]"
  ],
  "textContent": "An obstacle collision prevention system which can effectively prevent a collision even when an AHS car (2) is running in the \"restricted field-of-vision zone\" or when a vehicle running ahead suddenly reduces a running speed or stops, said system comprising an on-road processing facility, a plurality of fixed point information detection support facility, and a road-to-vehicle communications unit (15) for delivering various information to each AHS car (2), said system also comprising a vehicle comprising a fixed point information detection sensor (17) for recognizing that the AHS car (2) has entered a service area, an on-vehicle unit (6) for computing a distance between the AHS car (2) and an obstacle and outputting an automatic control or an instruction, and a vehicle control unit (7) for providing controls for automatic speed reduction. The obstacle collision prevention system detects an obstacle by integrating various types of information from the facilities and units, automatically provides controls for speed reduction and prevention of a collision, performs discrete communications between the on-road facilities and each vehicle, estimates the possibility of a collision with an obstacle or a vehicle running ahead based on information concerning obstacles ahead and any of the vehicles running in between, and selectively delivers the information to other vehicles to provide controls and instructions for speed reduction and prevention of a collision from the on-road facilities.",
  "title": "Obstacle collision prevention system"
}