Procedure for identifying a vehicle in a toll system, including the procedure: accessing a set of toll transaction entries, designating each entry in the toll transaction set between a vehicle and the toll system and including a transaction descriptor and a transaction time mark generated by a first clock; access a series of toll transaction images, the series including a plurality of images, each of which is associated with an image time stamp generated by a second clock. is independent of the first clock; identify a toll transaction entry from the series as a deviolation transaction entry based on the transaction descriptor; select a toll transaction image from the series; compare, using a processing device, the time stamp of the violation transaction with the image time stamp of the transaction image toll ction selected; Identify the selected toll transaction image as a violation image corresponding to the violation transaction entry based on a comparison result.
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