Different from the traditional manual toll collection system, ETC technology takes IC card as the data carrier, and realizes the remote data access function between the toll collection computer and IC card through wireless data exchange.

The computer can read the inherent information of the vehicle (such as vehicle category, owner, license plate number, etc.). ), road operation information and charging status information stored in IC card.

According to the established charging standard, the road use fee is deducted from the IC card by calculation. ETC also needs to automatically detect and classify vehicles.