What to do if the ETC exit does not deduct the fee?

[LeJulia]

If you have already passed the exit but the ETC did not deduct the fee, the unpaid fee can be deducted together the next time you pass a toll station. If the toll station cannot resolve this issue, you need to bring your ID card, vehicle license, and OBU device to the local ETC service center for fault inspection. How ETC works: Through the dedicated short-range communication between the onboard electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane at the toll station, the computer network technology is used to conduct background settlement processing with the bank, thereby achieving the purpose of vehicles passing through highway or bridge toll stations without stopping while still paying the highway or bridge fees. Where can ETC be installed: For small vehicles such as cars and minivans, the OBU device is installed on the upper middle part of the front windshield, while for large vehicles such as trucks and buses, it is installed on the lower middle part. ETC installation position requirements: The height should not be less than 1.2 meters or more than 2.5 meters; the installation angle N should be between 30º and 90º (the angle between the surface of the electronic tag and the horizontal plane).