×

Precision traffic indication

  • US 10,068,469 B2
  • Filed: 05/22/2017
  • Issued: 09/04/2018
  • Est. Priority Date: 01/20/2014
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • receiving probe data for a traffic message channel (TMC) designated length of road comprising a plurality of road segments;

    receiving an indication, based on the probe data, that a jam factor along the TMC designated length of road satisfies a variance threshold, wherein the jam factor is a ratio of an observed speed on the TMC designated length of road relative to a free flow speed on the TMC designated length of road;

    identifying a first subsection of the TMC designated length of road and a second subsection of the TMC designated length of road from the TMC designated length of road, wherein the first subsection and the second subsection each comprise one or more road segments, wherein the first subsection and the second subsection are identified, based at least in part, on a jam factor along the road segments of the respective subsection being within a predefined degree of similarity, wherein the first subsection of the TMC designated length of road or the second subsection of the TMC designated length of road comprises a composite subsection of more than one road segment in response to at least one road segment of the composite subsection having a length failing to satisfy a length threshold;

    calculating, using a processor, a first jam factor for the first subsection and a second jam factor for the second subsection;

    calculating, using the processor, a traffic flow difference based on the first jam factor for the first subsection and the second jam factor for the second subsection;

    modifying, using the processor, the TMC designated length of road in response to the traffic flow difference; and

    storing a composite road segment having the modified TMC designated length in a geographic database.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×