What does ETC tag removal mean?

[StZoe]

ETC showing 'tag invalid' means the ETC electronic tag is not activated. You need to bring the ETC device to an ETC service center or ETC service outlet for inspection. If the invalidation is not caused by human factors, simply performing a secondary activation of ETC will make it usable again. How ETC works: Through dedicated short-range communication between the vehicle-mounted electronic tag installed on the windshield and the microwave antenna in the ETC lane of the toll station, computer networking technology is used for backend settlement processing with banks. This achieves the purpose of vehicles passing through highway or bridge toll stations without stopping while paying the fees. Where ETC can be installed: For small vehicles like cars and vans, 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.