Abstract: 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 to 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.This application is related to the subject matter of application Ser. No. 525,103 filed May 17, 1990 now U.S. Pat. No. 5,144,553, issued Sep. 1, 1992, and application Ser. No. 524,654 filed May 17, 1990 now U.S. Pat. No.