Patent ID: 8855925

Claim:
A method for providing navigation guidance warnings in a vehicle having a computerized system including a satellite-based navigation aid device, the method comprising: receiving input designating a destination for the vehicle; determining a route comprising a plurality of segments between a starting point to the destination; receiving, from an external source, current conditions information relating to a current segment of the plurality of segments; receiving, from either the external source or a further external source, additional information relating to a known hazard located on a segment of the plurality of segments, wherein the known hazard corresponds to a roadway feature associated with a vehicle accident risk; determining a guidance alert to be provided to the user relating to the current segment; determining, based on the current conditions information and the additional information, an adjustment parameter representing modifying a magnitude for advanced notification of a driver action on the current segment; recalculating a point on the current segment at which the guidance alert issues based upon a default value and the adjustment parameter; and presenting turn-by-turn (TBT) directions to a user based on the determined route; wherein the method further comprises, during the presenting the TBT directions, presenting the guidance alert at the point on the current segment and presenting a hazard alert notifying the user of the known hazard.