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Providing driving condition alerts using road attribute data

  • US 9,552,726 B2
  • Filed: 08/24/2009
  • Issued: 01/24/2017
  • Est. Priority Date: 08/24/2009
  • Status: Active Grant
First Claim
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1. A method for providing driving condition alerts using road attribute data stored in a geographic database, the method comprising:

  • obtaining road location data, road attribute data, real-time traffic data and forecast traffic data, wherein the road attribute data, the real-time traffic data, and the forecast traffic data are associated with the road location data;

    wherein road attribute data include information regarding a shape of the road including curvature, slope, bank, or width;

    accessing, from a memory, a data baseline associated with the road location data, wherein the data baseline depends on road attributes that represent features of a road that can impact driving conditions and at least one of historic traffic data or historic weather data, wherein the data baseline initially includes expected conditions and changes over time as new road attribute data becomes available;

    calculating, using a processor of a server, a score based on the road attribute data, real-time traffic data, and the forecast traffic data with respect to the data baseline;

    performing a comparison of the score to a predetermined value to determine whether an alertable condition exists when the score is greater than the predetermined value; and

    transmitting, from the server to a navigation device, a driving condition alert if the alertable condition exists based on the comparison.

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