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5.0 Toll Collection Equipment Technology

5.3 Patron Toll Display Design

The patron toll or fare display is traffic control equipment consisting of a changeable alphanumeric sign mounted to a stanchion that is used to show the assessed toll based on the classification of the vehicle. Vehicle classification is entered by the attendant based on counted axles for each vehicle and the associated toll is established by an agency board and displayed on a rate schedule sign normally located off the side of the conventional toll plaza. Other vehicle characteristics used to establish vehicle classification are weight, vertical profile (i.e., height) and horizontal profile (i.e., width and length), either sepa-rately or combined. A PTD in an automatic lane is commonly used to show the user the remaining toll balance that is decremented after each valid coin is deposited into the ACM. The PTD is also used to convey completion of the transaction by displaying a “fare paid” message, which should display simultaneously with the state of an island traf-fic signal (ITS) changing from red to green. The PTD can also be used to display ETC account status messages such as “Acct Low”, “E-ZPass Go”, and “Call CSC”. The pa-tron toll or fare display can pose a safety hazard if mounted to close to the travelway. Conversely, the PTD can have a beneficial affect on operational performance (e.g., im-proved plaza throughput) if accurate and timely information is displayed to the user dur-ing a transaction.


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