There are two scenarios where highway ETC fees aren't deducted: one is when the barrier is damaged, and driving through the ETC lane too fast causes the deduction to fail; the other is when the ETC deduction is on an account basis, meaning it won't be deducted immediately but will be processed within a certain period. ETC Usage Precautions: The ETC transaction sensing range is 8 meters. When the vehicle in front stops, to prevent the vehicle ahead from having a faulty ETC device or no ETC device at all, maintain a distance of more than 10 meters to avoid automatic sensing and paying for the vehicle ahead. The ETC lane recognition speed is 20km/h. Driving too fast will prevent the vehicle device information from being read, leading to deduction failure. Unauthorized removal or movement of the OBU device, or if the ETC electronic tag falls off or becomes loose, will cause the electronic tag to malfunction. It can be taken to the bank where the ETC card was issued or the highway service office for inspection. If the loosening or detachment is not due to human intervention, reactivation is sufficient. When using a debit card linked to ETC, insufficient balance will also cause deduction failure. Follow the guidance of on-site staff to use the manual MTC lane, passing through with cash or card payment. Excessive thickness of the car's windshield can lead to poor sensing. This is particularly important for vehicles that have had their windshields replaced after an accident or those with modified front windshields.
