Vehicle guidance system

  • US 5,297,049 A
  • Filed: 06/16/1993
  • Issued: 03/22/1994
  • Est. Priority Date: 11/08/1982
  • Status: Expired due to Term
First Claim
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1. A vehicle guidance system for guiding a motor vehicle in a municipality wherein locations within said municipality are designated by respective horizontal and vertical coordinate means, said system comprising:

  • a central traffic control system including;

    means for transmitting dynamically alterable coordinate information representative of the whereabouts of congested route segments for use as route guidance information in accordance with detected traffic conditions,at least one roadside equipment including;

    horizontal and vertical coordinate memory means for storing coordinate information representative of said whereabouts of said congested route segments,roadside transmitter means for transmitting roadside identification information indicative of the location of the transmitting roadside equipment and for transmitting to said vehicle said route guidance information received from the central traffic control system,an on-board guidance unit including;

    on-board receiver means for receiving said identification information and said route guidance information transmitted by said roadside equipment,on-board vertical and horizontal coordinate memory means for storing said vertical and horizontal coordinate information transmitted from said roadside transmitter,an on-board system control unit for controlling the reception and storage of said identification information and said route guidance information,means for altering said coordinate information in said on-board memory means in accordance with said route guidance information transmitted by said roadside equipment, andsaid on-board system control unit including means for generating vehicle guidance information in accordance with data contents of said on-board memory means and for transferring said vehicle guidance information to a display means for assisting a driver in guiding said vehicle.

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