What is the best location to install an ETC device?
3 Answers
For small cars, the ETC device is generally installed in the upper middle part of the front windshield, while for large vehicles such as trucks and buses, the installation position is in the lower middle part. The appropriate installation height should be no less than 1.2 meters and no higher than 2.5 meters, with an installation angle between 30 and 90 degrees. For vehicles with factory-installed or aftermarket explosion-proof film, which may affect microwave communication signal transmission, the device should be installed in the microwave sunroof strip. ETC stands for Electronic Toll Collection. To apply for an ETC device, you need to provide the original and photocopies of the vehicle owner's valid ID and vehicle registration certificate. If the application is handled by a proxy, the proxy's valid ID is also required. The photocopy of the vehicle registration certificate should include the page with the most recent annual inspection stamp. Additionally, a bank card for deducting highway toll fees is required, and the vehicle must be registered under the name of an individual aged between 18 and 60. Here are some important considerations for installing an ETC device: Avoid obstructing the driver's view; the best location is behind the rearview mirror: Many car models have windshields with a steep incline, which can reduce the driver's field of vision. Installing the ETC device without considering this may increase blind spots. Placing it behind the rearview mirror on the right side helps avoid obstructing the view. Ensure it does not interfere with charging: The ETC electronic tag consumes power but generally does not require charging or battery replacement, as it has a built-in solar panel for self-charging. Therefore, avoid installing it on the blackened areas of the windshield or any position that might block the solar panel. Do not remove the device once installed: The adhesive backing includes an anti-tamper lever connected to a switch. Once installed, the windshield presses the lever in. If the device is removed, the lever will pop out, triggering the switch and locking the electronic tag, rendering it unusable. Unlocking it will require a visit to an ETC service center. This feature prevents multiple vehicles from sharing a single device. When using ETC, note the following: The ETC transaction sensing range is 8 meters. To avoid paying for the vehicle ahead due to its faulty ETC device, maintain a distance of at least 10 meters from the preceding vehicle. The ETC lane recognizes vehicles at speeds of up to 20 km/h; exceeding this speed may result in failed transactions. If using a debit card linked to ETC, insufficient balance will also cause transaction failures.
I've been using ETC for five years, and the best position is right in the center of the dotted black area at the top of the windshield. It doesn't obstruct the view and ensures stable signal reception. Remember to clean the glass with alcohol first, peel off the adhesive backing, align the device, and press firmly for 30 seconds. The solar panel should face outward, avoiding the sunshade band. My neighbor installed it too far to the right, and the sunshade often blocked it, causing frequent charging issues. Never apply metal film to this area, as it can interfere with the signal, forcing you to reverse dangerously at toll booths. After installation, avoid getting it wet or driving on highways for a week to let the adhesive dry completely for a secure hold.
It is recommended to install the ETC device about 5 cm to the right behind the interior rearview mirror. This position neither obstructs the driving view nor compromises efficient microwave signal reception. The windshield's black dotted area is a non-metallic zone reserved by manufacturers, perfectly avoiding radio interference. Important note: Don't cut corners by sticking it on metallic window tint – last year I misplaced mine and spent half an hour struggling at the toll gate. Finally, use original double-sided tape, as cheap substitutes lose adhesion under sunlight.
