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Construction zone detection using a plurality of information sources

  • US 9,221,461 B2
  • Filed: 09/05/2012
  • Issued: 12/29/2015
  • Est. Priority Date: 09/05/2012
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving map information related to a prior map of a road of travel of a vehicle, wherein the map information includes road traffic sign information that indicates locations and types of traffic signs that existed on the road;

    detecting, by a computing device using one or more sensors coupled to the vehicle, a traffic sign, and determining that the traffic sign is missing from the map information;

    in response to at least determining that the detected traffic sign is missing from the map information determining, using the computing device, a likelihood of existence of a construction zone on the road;

    in response to the likelihood exceeding a threshold likelihood, detecting one or more construction zone objects;

    determining a severity of road changes based on a number and locations of the one or more construction zone objects; and

    providing, by the computing device, instructions to control the vehicle based on the likelihood and the severity of road changes.

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