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Process for transmitting route information which defines a proposed route for a vehicle in a road network and serves as a navigation aid from a traffic information center to a terminal in a vehicle, traffic information center and terminal

  • US 6,256,580 B1
  • Filed: 06/16/1999
  • Issued: 07/03/2001
  • Est. Priority Date: 12/16/1996
  • Status: Expired due to Term
First Claim
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1. A process for transmitting route information completely defining a route of a vehicle in a public traffic network, which route is suggested as a navigation aid, from a central traffic station to a terminal unit in the vehicle, wherein the route information concerns path points located on the suggested route, the process comprising:

  • defining a first path point wherever instructed by the central traffic station that the vehicle turn off from a road on which the vehicle is located; and

    transmitting additional information defining a next path point following in a driving direction of the suggested route in addition to route information at a path point to the terminal unit, the additional information defining the next path point after the first path point by indicating turn possibilities between the two path points, the transmitting step including a turning direction required for the route at a path point.

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