Patent ID: 7734500

Claim:
A system for conducting a tolling transaction with a vehicle traveling on a toll road, comprising: a first RF source configured to create a first RF read zone proximate to the toll road and in a pathway of the vehicle, the first RF source configured to communicate with a transponder associated with the vehicle when the vehicle is located within the first RF read zone; a second RF source configured to create a second RF read zone proximate to the toll road and in the pathway of the vehicle, the second RF source disposed from the first RF source down the pathway of the vehicle such that the vehicle passes through the second RF source and the second RF read zone after passing through the first RF source and the first RF read zone, the second RF source configured to communicate with the transponder associated with the vehicle when the vehicle is located within the second RF read zone; and a processor operatively coupled to the first RF source and the second RF source and configured to: attempt to complete the tolling transaction with the transponder associated with the vehicle via the first RF source when the vehicle is located within the first RF read zone, and when at least a portion of the tolling transaction that was to be completed via the first RF source is interrupted such that the at least a portion of the tolling transaction is not completed via the first RF source, conduct the at least a portion of the tolling transaction with the transponder associated with the vehicle via the second RF source when the vehicle is located within the second RF read zone, wherein the tolling transaction is completed with respect to the vehicle before the vehicle leaves the second RF read zone.