How to Use ETC on Free Highways?

[MacCarmen]

For free highway ETC users: Enter via ETC lane and exit via ETC lane - no charge; Enter via manual lane and exit via manual lane - no charge; Enter via manual lane and exit via ETC lane - no entry information, barrier won't lift at exit; Enter via ETC lane and exit via manual lane - passable without charge. ETC usage precautions: The ETC transaction sensing range is 8 meters. When following another vehicle, maintain at least 10 meters distance to prevent accidental payment for the vehicle ahead in case its ETC device malfunctions or is absent. The ETC lane recognition speed limit is 20km/h. Excessive speed will prevent vehicle device information from being read, resulting in failed payment. Unauthorized OBU device movement, detached or loose ETC electronic tags will cause deactivation. These can be inspected at the bank where the ETC card was issued or at highway service centers. Non-deliberate detachment only requires reactivation.