Where to Place the ETC Device?
3 Answers
The installation position for ETC devices in small cars 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 should be no lower than 1.2 meters and no 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 the signal transmission of the microwave communication link, the device should be installed in the microwave skylight strip. ETC stands for Electronic-Toll-Collection, meaning electronic toll collection system. To apply for ETC, the vehicle owner needs to provide original and photocopies of their valid ID card and vehicle registration certificate. If the application is handled by a non-owner, the agent's valid ID card is also required. The photocopy of the vehicle registration certificate should include the page stamped with the most recent annual inspection. Additionally, a bank card for deducting highway tolls is required, and the vehicle must be registered under the name of an individual aged between 18 and 60. 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 a large inclination angle for the windshield, which can reduce the driver's field of vision. If this is not considered during ETC installation, 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 that can charge itself. Therefore, during installation, avoid the blackened areas on the windshield and positions that may block the solar panel. Once installed, do not remove it arbitrarily: The button in the middle of the adhesive is an anti-removal rod connected to a switch. After the electronic tag is installed, the windshield will press the anti-removal rod in. If the tag is removed arbitrarily, 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. When using ETC, note the following: The ETC transaction sensing range is 8 meters. To prevent the ETC device of the vehicle in front from malfunctioning, maintain a distance of more than 10 meters from the vehicle ahead to avoid automatic toll deduction for the wrong vehicle. The ETC lane recognition speed is 20 kilometers per hour; driving too fast may result in failure to read the vehicle device information and thus failed toll deduction. When using a debit card linked to ETC, insufficient balance may also cause toll deduction failure.
Last time I installed my ETC, I tried placing it in different spots on the windshield and found the most reliable position is right at the top center, just below the rearview mirror. That location has the best signal reception since there's no obstruction, allowing instant recognition at highway toll booths—unlike the sides where scanning often fails. Use the dedicated adhesive to secure it firmly and avoid moving it afterward, as that can affect the device's stability. The high position doesn't block your view while driving at all. I once made the mistake of placing it too low, which felt distracting and unsafe, but after moving it higher, it's been hassle-free. Remember to choose a clean area without metal coating, and wipe off dust regularly to maintain cleanliness. This method is simple, effective, and durable. Now passing through toll stations feels as quick as pressing a button—super convenient.
As someone who frequently tinkers with cars, I'm quite particular about the ETC placement. Always choose the central area at the very top of the windshield, close to the rearview mirror base—that spot has the strongest signal and minimal interference. For cars with extensive metal film, be sure to avoid those areas. When installing, secure it firmly with strong adhesive to prevent wobbling, which could affect communication efficiency. Placing it high won't obstruct the view, but positioning it too low can be troublesome. I've tested it several times at toll booths after installation, and everything went smoothly. Signal issues can sometimes stem from placement misalignment, so centering is crucial. For maintenance, occasionally clean off dust, and reapply adhesive if it comes loose. Once the position is fixed, it can be used worry-free for a long time. Paying attention to these small details can save a lot of hassle.
