How do free ETC users pass on highways?

[McMiguel]

Free ETC users on highways should choose ETC lanes for both entry and exit to avoid charges; manual lanes for both entry and exit also incur no charges; entering via manual lane and exiting via ETC lane will not work as there's no entry information, and the exit barrier won't lift; entering via ETC lane and exiting via manual lane is allowed without charges. ETC usage precautions: The ETC transaction sensing range is 8 meters. When the vehicle ahead is stationary, maintain a distance of over 10 meters to prevent automatic sensing and payment for the vehicle ahead, in case its ETC device is faulty or absent. The recognized speed for ETC lane passage is 20km/h. Excessive speed may prevent reading of vehicle device information, leading to failed charges. Unauthorized removal or movement of the OBU device, or detachment/loosening of the ETC electronic tag, will render the tag ineffective. It can be taken to the bank where the ETC card was issued or to a highway service office for inspection. Non-deliberate loosening or detachment only requires reactivation.