What are the reasons for ETC not being detected?

[MacColin]

The reasons for ETC not being detected are as follows: 1. Excessive speed leading to unsuccessful information reading: When ETC vehicles pass through ETC lanes, the speed should be below 20 km/h. Excessive speed may cause the lane to fail in reading the vehicle's device information. 2. The inserted card LED screen shows no OBU: In this case, first remove and reinsert the card, then try entering the ETC lane again; if it still doesn't work, go to a manual lane first, then proceed to an ETC service point for handling. 3. OBU device issues: Problems such as a dead battery or loose connection in the OBU can prevent the vehicle from passing smoothly through the ETC lane. In such cases, go to a manual lane first, then visit an ETC service point for resolution. Vehicle owners should properly store the ETC electronic tag, protecting it from moisture, water, and strong magnets. 4. Using someone else's ETC: The ETC electronic tag is uniquely associated with the registered vehicle—one card, one vehicle, one tag, dedicated use. If someone else's ETC does not match the vehicle information, it cannot pass through the ETC lane smoothly.