What does it mean when the ETC tag shows as invalid?
1 Answers
When 'Tag Invalid' appears on the ETC, it indicates that the ETC electronic tag is not activated. You need to take the ETC device to an ETC service center or ETC service outlet for inspection. If the invalidation is not caused by human factors, a simple ETC reactivation will allow it to be used again. How ETC works: ETC operates through dedicated short-range communication between the onboard electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane at toll stations. It uses computer networking technology to process background settlements with banks, enabling vehicles to pass through highway or bridge toll stations without stopping to pay fees. Where ETC can be installed: For small vehicles like cars and minivans, the ETC card and OBU device are installed in the upper middle part of the front windshield. For large vehicles like trucks and buses, the installation position is in the lower middle part.