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Radio communications are made using an onboard IC card and between the antenna installed on the onboard unit and an antenna installed on the roadside. This allows non-stop automatic payment of road traffic charges. Information conveyed by radio communications is encrypted by security technology. Entrance information is loaded onto the IC card at the entrance toll gate. The charges are determined and automatically paid at the exit, thus making charge payments efficient. Other new payment systems include environmental road pricing that allows for differential charge and parking lots, along with other services.
ETC : Electronic Toll Collection