In this system, a tiny card-size radio taped to the car windshield transmits signals to the toll gate which deducts the toll from your account at the gate (not from the card).

• 系统中，贴在汽车挡风玻璃上的卡片大小的无线电装置发射信号给缴费闸门，然后闸门就会从你在这个闸门（而不是卡片）的帐户上扣钱。