What are the reasons for not scanning the ETC when entering the highway?
3 Answers
The reasons for not scanning the ETC when entering the highway are: 1. The ETC card is not properly inserted; 2. The following vehicle is too close and fails to scan the ETC of the vehicle. The solutions for not scanning the ETC when entering the highway are: 1. Observe whether the exit road conditions allow parking, and manually swipe the ETC card with the toll collector for payment; 2. If parking is not possible or you have already exited the highway, call 96122 to clear the record. The ETC card is a dedicated short-range communication device between the on-board electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane at the toll station. It uses computer networking technology to perform backend settlement processing with the bank, achieving the purpose of vehicles passing through highway or bridge toll stations without stopping to pay the fees.
I've been driving for many years and have encountered several instances where the ETC wasn't scanned on the highway. The most common issues are device malfunctions, such as the battery running out after prolonged use or incorrect placement leading to weak signals. The metal content or excessive thickness of the windshield film can also block signal transmission. Last time, I drove too fast, exceeding 20 km/h, and the system couldn't capture it, making it seem like no scan occurred. Another issue is insufficient account balance, so it's essential to regularly check the app to avoid arrears. Occasionally, the highway toll system malfunctions due to aging sensors, requiring patience to queue and pass through the manual lane. It's advisable to perform a simple self-check before entering the highway to see if the device's light is on—green indicates normal operation. Maintaining it well ensures a convenient trip.
From a technical perspective, ETC scanning failures are mainly caused by equipment issues and signal interference. The primary reason is the depletion of the onboard tag's battery, which typically lasts two years and requires replacement. Misaligned antenna installation or reflective films can reduce microwave sensitivity, lowering the scanning efficiency. Maintaining a speed within 15 km/h is the safest approach, as exceeding this limit can easily lead to malfunctions. System-side sensor calibration errors or hardware failures can also result in scanning failures. Metal coatings on the windshield are particularly problematic. It is recommended to use ETC-specific films, ensure proper installation alignment, avoid metal frames, and regularly test the equipment. A simple method is to check the light display: red indicates a fault, while green signifies normal operation. Proper maintenance ensures smooth driving convenience.
