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Vehicle collision preventing apparatus

  • US 6,114,951 A
  • Filed: 12/17/1997
  • Issued: 09/05/2000
  • Est. Priority Date: 12/27/1996
  • Status: Expired due to Term
First Claim
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1. A collision preventing apparatus of a subject vehicle for preventing collision with a preceding vehicle which is traveling in front of said subject vehicle, comprising:

  • actual inter-vehicle distance detecting means for detecting a first actual inter-vehicle distance between said subject vehicle and said preceding vehicle and a second actual inter-vehicle distance between said subject vehicle and an object existing ahead of said preceding vehicle;

    safe inter-vehicle distance calculating means for calculating a first safe inter-vehicle distance between said subject vehicle and said preceding vehicle and a second safe inter-vehicle distance between said subject vehicle and said object, in accordance with a braking distance and a dead time before braking of said subject vehicle; and

    hazard judging means for judging a hazard of collision of said subject vehicle with said preceding vehicle in the case that said second actual inter-vehicle distance becomes smaller than said second safe inter-vehicle distance even when said first actual inter-vehicle distance is larger than said safe inter-vehicle distance.

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