What are the reasons for not scanning the ETC when entering the highway?

[AlexFitz]

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.

[Vieira]

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.

[Ryder]

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.

[Lane]

After years of driving, I've seen many ETC issues—80% are due to misaligned tags, signal loss, or low battery. Speeding through tolls too fast can prevent detection, while deep metallic windshield tints may interfere with signal transmission. Insufficient account balance temporarily halts deductions. A red light on the device signals maintenance needs. Replace the battery every 2-3 years as routine upkeep. If malfunctions occur, slow down and retry—never rush the barrier. Simple maintenance ensures safety first.

[DiMaddox]

Modern car ETC management via APP often faces issues like insufficient balance due to failed recharges or system update errors. Thick tint films containing metal can block signals, while speeds exceeding 20km/h hinder detection. Mobile phones left in cars may cause signal interference. Opt for metal-free films, regularly check APP alerts for low balance, approach toll gates below 15km/h, and note red light for device malfunction vs. green for normal operation—easy maintenance.