1


IDENTIFY THE VEHICLE CLASS USING THE TOLL ROAD TO CHARGE THE APPROPRIATE TOLLS.


Toll by plate requires loops embedded in the pavement or overhead readers, which detect the presence of a vehicle and measure the number of axles as it traverses the area. Most toll roads assess charges by the number of axles. Some toll facilities add factors for length or height of trailers in truck combinations, measuring those elements with roadside readers.


Though several toll agencies still capture the number of axles using embedded loops, with toll by transponder, the device holds many of those vehicle class details. A radio frequency identification device (RFID) mounted on the windshield communicates to an antenna in the gantry above the toll road. Not all cars and trucks carry a transponder, so the loop-and-reader method of identifying the class of vehicle is always present.


2


IDENTIFY THE PERSON OR COMPANY RESPONSIBLE FOR PAYMENT.


Toll by plate uses cameras mounted above the road to capture the vehicle license plate, often referred to as “license plate readers,” or LPRs. Toll authorities would prefer to photograph the front vehicle license plate, but not all states require them. For that reason, toll by plate typically relies on cameras that capture the rear license plate.


Toll by plate systems attempt to match the license plate photo or video to the vehicle’s registered owner. While toll authorities may have authorized access to in-state vehicle registration records to make that match, they may need a third-party vendor to handle out-of-state license plates. Toll agencies pass on the expense to users who trigger a toll by plate “video tolling,” or “plate read” charge.


STEP


STEP


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8