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Does ETC have to be attached to the windshield?

1 Answers

VonCarlos

07/30/25 1:19am

ETC can be used without being attached to the windshield. Installing ETC on the upper part of the windshield is to minimize obstruction of the driver's view and to ensure better recognition by highway toll station equipment. If you don't want to install it on the windshield, place it in an open area where it can be seen through the windshield. For small cars, the ETC installation position is generally in the upper middle part of the front windshield, while for large vehicles like trucks and buses, it is installed in the lower middle part. The appropriate installation position is at a height not lower than 1.2 meters and not higher than 2.5 meters, with an installation angle between 30 to 90 degrees. For vehicles with anti-explosion film or those that have it installed later, which may affect microwave communication signal transmission, ETC should be installed in the microwave window zone. Here are some precautions for installing ETC: Do not block the view; it's best to install it behind the rearview mirror: Many car models have windshields with a large rear tilt angle, which reduces the driver's field of vision. If ETC is installed without considering this, it may increase the driver's blind spots. Installing it behind the rearview mirror on the right side can help avoid obstructing the view. Do not interfere with charging: The ETC electronic tag consumes power but generally does not require charging or battery replacement because it has a solar panel on the back for self-charging. Therefore, during installation, avoid the black areas on the windshield and positions that may block the solar panel. Do not remove it casually once installed: The button in the middle of the adhesive is an anti-removal rod connected to a switch. After installation, the windshield will press the anti-removal rod in. If removed casually, the rod will pop out and trigger the switch, locking the electronic tag and rendering it unusable. You will then need to visit an ETC service point to unlock it. This mechanism is designed to prevent multiple vehicles from sharing one device. Notes for using ETC: The ETC transaction sensing range is 8 meters. To prevent issues with the ETC device of the vehicle in front, maintain a distance of more than 10 meters from the vehicle ahead to avoid automatic payment for the front vehicle. The speed limit for ETC lane recognition is 20 kilometers per hour. Driving too fast may result in failure to read vehicle information and unsuccessful fee deduction. When using a debit card linked to ETC, insufficient balance may also cause payment failure.

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