How to Determine if the ETC Device is Usable?
2 Answers
Methods to check if ETC is functioning properly: Manually insert and remove the card. If there is a sound, it indicates that the ETC is in normal working condition. How ETC works: Through the on-board electronic tag installed on the vehicle's windshield, specialized short-range communication is established with the microwave antenna on the ETC lane at the toll station. This utilizes computer networking technology to perform backend settlement processing with the bank, enabling vehicles to pass through highway or bridge toll stations without stopping while still paying the required fees. Where ETC can be installed: For small vehicles such as cars and minivans, the OBU device is installed on the upper middle part of the front windshield. For large vehicles like trucks and buses, the installation position is on the lower middle part. ETC installation position requirements: The height should be no less than 1.2 meters and no 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).
I always use ETC for long-distance trips. First, check that the device is securely attached to the middle of the windshield without any looseness. While driving, observe the small box—a green light indicates normal operation, while no light flashing may mean it's out of battery or broken. It's best to test it practically by specifically going through an ETC toll station. If the barrier automatically lifts and the fee is successfully deducted, it means it's working. If not, check the linked account by logging into your bank or ETC app on your phone to ensure sufficient balance. If there's a fee arrears or unbinding, handle it promptly. Also, remember to clean the windshield regularly to avoid blocking the signal, especially for older cars—pay attention to whether the battery voltage is stable to prevent malfunctions. My experience is to test it every two months. On the highway, it's safer to switch to a spare card or change lanes.
