Why is the balance not displayed when passing through ETC?

[DiVincent]

The reason why the balance is not displayed when passing through ETC is that the backend system will automatically deduct fees based on the card number and toll records uploaded from transaction data. Since the fee deduction is not processed in real-time, the balance cannot be displayed immediately. Below is relevant information about ETC: Types of ETC cards: ETC cards are generally divided into three types: debit cards, prepaid cards (debit cards), and credit card co-branded toll cards. Credit card co-branded toll cards are currently the mainstream in the market, serving as functional credit cards issued by banks for specific purposes and fields. How ETC works: The ETC non-stop toll collection system is currently the most advanced bridge and road toll method in the world. It uses dedicated short-range microwave communication between the onboard electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane at toll stations. Through computer networking technology, it processes backend settlements with banks, enabling vehicles to pay tolls without stopping at toll stations.