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Vehicle speed control based on GPS/MAP matching of posted speeds

  • US 5,485,161 A
  • Filed: 11/21/1994
  • Issued: 01/16/1996
  • Est. Priority Date: 11/21/1994
  • Status: Expired due to Term
First Claim
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1. An apparatus for controlling the maximum speed of a vehicle based on the speed limits posted on the street on which the vehicle is travelling, said apparatus comprising:

  • a position-, bearing- and speed-determining navigation receiver-computer with an earth navigation format data output;

    a vehicle engine computer connected to said navigation receiver; and

    a location-speed relational map database, wherein said location-speed relational map database is stored in said navigation receiver-computer;

    wherein said navigation receiver-computer determines the location and the speed of the vehicle, inputs the maximum speed from said location-speed map database, and forwards the speed limit to said engine computer, and wherein said engine computer uses the speed limit information contained in said location-speed map database to limit the maximum ground speed of the vehicle.

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