Electric toll management

  • US 8,775,235 B2
  • Filed: 03/08/2010
  • Issued: 07/08/2014
  • Est. Priority Date: 06/10/2005
  • Status: Active Grant
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First Claim
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1. A method of identifying a vehicle in a toll system, the method comprising:

  • detecting, using a first sensor that is coupled to a lane transaction system of a toll system, a toll transaction between a first vehicle and the toll system;

    generating, by a processor of the lane transaction system, a first toll transaction entry in response to detection by the first sensor of the toll transaction between the first vehicle and the toll system, the first toll transaction entry including a first transaction time stamp generated by a first clock;

    detecting, using a second sensor that is separate from the first sensor and that is coupled to an imaging system of the toll system, the toll transaction between the first vehicle and the toll system;

    capturing, using an image capture device of the imaging system, a picture deemed to depict the toll transaction between the first vehicle and the toll system in response to detection by the second sensor of the toll transaction between the first vehicle and the toll system;

    accessing the first toll transaction entry;

    accessing a first picture time stamp associated with the picture, the first picture time stamp being generated by a second clock that is independent from the first clock;

    accessing a second toll transaction entry, the second toll transaction entry designating a toll transaction between a second vehicle and the toll system and the second toll transaction entry including a second transaction time stamp generated by the first clock;

    accessing a second picture time stamp associated with a picture deemed to depict the toll transaction between the second vehicle and the toll system, the second picture time stamp being generated by the second clock;

    calculating, using at least one computer processor, a transaction time difference between the first transaction time stamp and the second transaction time stamp;

    calculating a picture time difference between the first picture time stamp and the second picture time stamp; and

    enabling the calculated transaction time difference and the calculated picture time difference to be concurrently displayed in a graphical user interface for perception by a user.

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