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System and method for automated updating of map information

  • US 9,043,138 B2
  • Filed: 09/07/2007
  • Issued: 05/26/2015
  • Est. Priority Date: 09/07/2007
  • Status: Active Grant
First Claim
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1. A system for automatically updating a map database, comprising:

  • an input subsystem configured to provide vehicle readings, each vehicle reading corresponding to a vehicle and comprising a location of the vehicle;

    a map database comprising information associated with roads; and

    an information inference module configured to determine that a type of traffic control at an approach to an intersection is either a stop sign or a traffic light, the stop sign being indicated by substantially all the vehicle readings corresponding to the approach indicating substantially all vehicles stopping, and the traffic light being indicated by a first portion of the vehicle readings corresponding to the approach indicating vehicles stopping at the intersection at some times and a second portion of the vehicle readings corresponding to the approach indicating vehicles not stopping at other times, the information inference module further configured to update the map database to reflect the type of traffic control.

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