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Methods, systems, and devices for condition specific alerts

  • US 8,775,069 B1
  • Filed: 05/10/2007
  • Issued: 07/08/2014
  • Est. Priority Date: 09/18/2003
  • Status: Active Grant
First Claim
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1. A method comprising the steps of:

  • determining, using a processor associated with a navigation device, a present location based on a signal from a global positioning system (GPS);

    receiving, using the processor, an input corresponding to a user identified criteria to be avoided, the user identified criteria being a hazard category;

    analyzing, using the processor, off-road cartographic data between the present location and a destination waypoint to determine if a geographic condition associated with the hazard category to avoid is present;

    calculating, using the processor, an off-road route to the destination waypoint based on the off-road cartographic data with a preference for avoiding all areas between the present location and the destination waypoint associated with the hazard category; and

    if the calculated off-road route avoids the hazard category, alerting a user regarding the avoidance of the hazard category using the processor;

    wherein the off-road cartographic data includes terrain information and information associated with bodies of water;

    wherein the terrain information includes various grades associated with a geographic area; and

    wherein the input corresponding to a hazard category to avoid is a maximum grade for a route to the destination waypoint.

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