FasTrak is the electronic toll collection (ETC) system used in the state of California in the United States. The system is used statewide on all of the toll roads, toll bridges, and high-occupancy toll lanes along the California Freeway and Expressway System.
Mounted FasTrak transponder
Diagram of FasTrak toll collections system. As the vehicle enters the toll lane, sensors (1) detect the vehicle. The two-antenna configuration (2) reads a transponder (3) mounted on the vehicle's windshield. As the vehicle passes through the exit light curtain (4), it is electronically classified by the treadle (5) based on the number of axles, and the ETC account is charged the proper amount. Feedback is provided to the driver on an electronic sign (6). If the vehicle does not have a transponder, or if a transponder is not detected at the toll plaza, the system classifies it as a violator and cameras (7) take photos of the vehicle and its license plate for processing. If the license plate is registered as belonging to a FasTrak user, the account is debited only the toll charge (which, however, does not include any HOV discounts that would have been received with a detected FasTrak Flex tag), and no penalty is charged.
A switchable FasTrak device used by the Metro ExpressLanes in Los Angeles County
FasTrak antennae that pull data used to generate 5-1-1 traffic information
A toll road, also known as a turnpike or tollway, is a public or private road for which a fee is assessed for passage. It is a form of road pricing typically implemented to help recoup the costs of road construction and maintenance.
Collecting tolls on SR 417 near Orlando, Florida, United States. This shows the two common methods of collection of tolls: tollbooth (on right) and electronic toll collection (on left).
A table of tolls in pre-decimal currency for the College Road, Dulwich, London SE21 tollgate
Toll bar in Romania, 1877
Entrance fees collection in a local community road checkpoint near Bagan (Myanmar)