05086389 is referenced by 176 patents and cites 10 patents.

A system for automatic collection of tolls includes a toll facility, an in-vehicle toll processor having memory for storing a toll-money-available quantity purchased by the user, and a toll-facility-identification site that transmits a toll-facility-identifier signal indicating the identity of the upcoming toll facility and the toll to be collected. As the vehicle approaches the identification site, the in-vehicle processor receives the identifier signal and calculates the toll be be debited. When the vehicle passes through the toll facility, the facility transmits a toll-collect signal instructing the in-vehicle toll processor to debit the calculated toll from memory. The in-vehicle processor debits the calculated amount and transmits an acknowledgement signal to the toll facility.

Title
Automatic toll processing apparatus
Application Number
7/524654
Publication Number
5086389
Application Date
May 17, 1990
Publication Date
February 4, 1992
Inventor
John M Harrison
17 Dartmouth St., Concord, 03301
NH, US
John J Hassett
32 Pond St., Marblehead, 01945
MA, US
Agent
Lahive & Cockfield
IPC
G08G 1/00
G07B 15/00
G06F 15/21
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