In-car ETC carries the risk of being illegally charged, as ETC credit cards can be exploited through the quick payment feature. Methods to prevent ETC cards from being illegally charged include disabling the small-amount no-password no-signature function; removing the card when leaving the car; activating SMS alerts; and promptly collecting evidence and reporting to the police upon discovering illegal charges. Precautions for using ETC: The ETC transaction sensing range is 8 meters. When the vehicle ahead is stationary, to prevent issues such as a malfunctioning ETC device or the absence of an ETC device in the vehicle ahead, maintain a distance of more than 10 meters to avoid automatic sensing and payment for the vehicle ahead. The recognized speed for ETC lane passage is 20km/h. Speeds exceeding this limit may result in failure to read the vehicle's device information and unsuccessful charges. Unauthorized removal or movement of the OBU device, detachment, or loosening of the ETC electronic tag can render the electronic tag ineffective. In such cases, the device can be taken to the bank where the ETC card was issued or to a highway service office for inspection. For non-deliberate loosening or detachment, reactivation is usually sufficient. When using a debit card bound to ETC, insufficient balance may lead to charge failure. Follow the guidance of on-site staff to use the manual MTC lane, paying via cash or card. Excessively thick car windshields can cause poor sensing. This is particularly noteworthy for vehicles that have undergone windshield replacement after accidents or those with modified front windshields.
