A credit card can be bound to a maximum of 5 ETCs as a debit account, but a car can only be installed with one bank's ETC card, but the ETC card can be bound to pay for multiple cars, but it is used for debits. Each bank has different limits on the number of ETC units bound to the bank card for fees.

When applying for an etc card, fill out the "etc business debit authorization form". When filling in the designated vehicles for binding payment, you can fill in 5 vehicles (more than 5 vehicles need to be filled in on an additional page). In other words, there is no limit on the number of designated vehicles bound to an etc card for payment.

Extended information:

Notes on the use of ETC:

1. The ETC trading area is 8 meters. When encountering a vehicle stopping in front, you should stop with the vehicle in front. Keep a distance of more than 10 meters to prevent the automatic sensor from paying the toll for the vehicle in front.

2. The ETC lane traffic recognition speed should be lower than 20km/h. If the vehicle speed is too fast, the vehicle equipment information cannot be read.

3. Unauthorized disassembly of mobile OBU equipment, OBU out of power, ETC electronic label falling off or loosening, etc. may cause the ETC electronic label to become invalid. You can take the ETC equipment to a bank or highway that issues ETC cards. Go to the office for testing and reactivate it if it fails due to loose adhesive. When you get the ETC electronic tag again, be careful to prevent it from moisture, water, and strong magnetism.

4. The ETC card and OBU must be bound to the vehicle. The ETC electronic tag has the only corresponding relationship with the registered vehicle. One card, one tag for each vehicle, and it is dedicated to special vehicles. The same applies to using someone else's ETC card bound to the vehicle. Invalid.

Baidu Encyclopedia-ETC Credit Card