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Route guidance at intersections

  • US 10,295,357 B2
  • Filed: 03/04/2014
  • Issued: 05/21/2019
  • Est. Priority Date: 03/04/2013
  • Status: Active Grant
First Claim
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1. A method of providing route guidance along a planned route by means of a navigation system, the method comprising:

  • upon determining that the planned route along a plurality of road segments of a road network graph comprises at least two adjacent intersections, retrieving from a database predetermined attributes for a transition between an incoming road segment of the plurality of road segments and leading towards a first one of the at least two adjacent intersections and an outgoing road segment of the plurality of road segments and leading away from a last one of the at least two adjacent intersections, wherein;

    the predetermined attributes specify at least a curved path modelling a geometrical form of the transition,the curved path is defined from the incoming road segment leading toward the first one of the at least two adjacent intersections and the outgoing road segment leading away from the last one of the at least two adjacent intersections,the curved path is defined with respect to a first point on the incoming road segment, a second point on the outgoing road segment, and at least one further point in-between the incoming road segment and the outgoing road segment,the respective points are at given geolocations and have associated tangents to the curved path thereby defining a curvature of the curved path, andthe curved path is distinct from the plurality of road segments and at least partially deviates from the plurality of road segments; and

    controlling a display to display the curved path in a map view for route guidance along the planned route.

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