Electronic vehicle toll collection system and method

  • US 5,144,553 A
  • Filed: 05/17/1990
  • Issued: 09/01/1992
  • Est. Priority Date: 05/17/1990
  • Status: Expired due to Term
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First Claim
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1. A method for automatically collecting tolls from a vehicle moving along a roadway, the method comprising the steps ofproviding at least a first toll facility through which the vehicle can pass for toll collection,providing an in-vehicle toll processor having storage for storing a toll-money-available signal representative of a monetary quantity available for debiting in a toll transaction at an upcoming toll facility,loading the toll processor with an electronic gross-toll-amount signal representative of an initial toll-money-available value,transmitting, from a first toll-facility-identification site corresponding to and remote from a first toll facility, a first toll-facility-identifier signal uniquely representative of the location of the first toll facility,said in-vehicle toll processor being receptive to receive said first toll-facility-identifier signal,said in-vehicle toll processor being arranged to calculate, in response to the first toll-facility-identifier signal, a toll amount to be debited at the first toll facility,transmitting, from a first toll collection facility to the in-vehicle toll processor, as the vehicle passes through the first toll collection facility, a toll-collect signal instructing the in-vehicle toll processor to debit the calculated toll amount from storage,debiting the calculated toll amount from storage, andtransmitting, from the in-vehicle toll processor to the first toll facility, an acknowledgement signal to indicate that the calculated toll amount has been debited from storage.

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