
The installation position of a car ETC is generally in the upper middle part of the front windshield, while for large vehicles such as trucks and buses, it is installed in the middle to lower part. The suitable installation position should be no lower than 1.2 meters and no higher than 2.5 meters, with an installation angle between 30 and 90 degrees. For vehicles with anti-explosion film or those that have been retrofitted with anti-explosion film, it may affect the signal transmission of the microwave communication link, and thus should be installed in the microwave sunroof strip. ETC is the abbreviation of Electronic-Toll-Collection, meaning electronic toll collection system. To apply for ETC, you need to provide the original and photocopies of the vehicle owner's valid ID card and vehicle license. If the application is not made by the owner, the agent's valid ID card is also required. The photocopy of the vehicle license should include the page with the most recent annual inspection stamp. A bank card for deducting highway tolls is also needed, and the vehicle must be registered under an individual's name aged between 18 and 60. Here are some precautions for installing ETC: Do not block the view; it is best to install it behind the rearview mirror: Many car models have a large inclination angle of the windshield, which can reduce the driver's field of vision. If this is not considered when installing ETC, it will increase the driver's blind spot. Installing it behind the rearview mirror on the right side can avoid blocking the view. Do not affect 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 black areas on the windshield and do not install it in a position 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 lever, connected to a switch below. After the electronic tag is installed, the windshield will press the anti-removal lever in. If it is removed arbitrarily, the anti-removal lever will pop out and trigger the switch, locking the electronic tag and rendering it unusable. You will then need to go to an ETC service point to unlock it. This is designed to prevent multiple vehicles from sharing one device. When using ETC, note that: the ETC transaction sensing area 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 in front to avoid automatic sensing and paying for the vehicle in front. The ETC lane recognition speed is 20 kilometers per hour. If the speed is too fast, the vehicle device information cannot be read, leading to payment failure. When using a debit card to bind ETC, insufficient balance will also cause payment failure.

I previously installed an ETC device, choosing to place it at the very top center of the front windshield, right next to the rearview mirror inside the car. This installation method has many advantages: it doesn’t obstruct the driver’s view at all while driving, and the toll station scanning equipment can easily capture the signal, making every pass through the toll booth quick and seamless. Remember to clean the windshield thoroughly before installation; otherwise, the adhesive tape won’t stick firmly and the device may fall off. If the placement is too off-center, it might fail to read the card, causing delays in the queue. I recommend having a 4S shop or a professional technician handle the installation—they have the expertise to ensure it’s done right the first time. Also, avoid installing it in areas with dark tinted film, as this could block the signal. Overall, this placement is thoughtfully designed, making daily commutes much more hassle-free by eliminating the need for loose change.

As a beginner car owner, I carefully researched the optimal ETC placement, which is typically at the top center of the windshield interior. This area ensures strong signal reception without metal or roof obstructions, allowing toll station scanners to easily read it for swift passage. During installation, I had a professional help me secure it firmly to the glass with specialized adhesive. New drivers should avoid positioning it too low or near edges to prevent vision obstruction or misreads. Regular adhesive checks are also crucial to prevent device loosening on bumpy roads. If you have window tint, opt for light tints or install outside tinted areas for best performance. Correct positioning saves daily commute time and boosts travel efficiency.

As a car enthusiast, I know there's scientific reasoning behind installing the ETC at the very top center of the windshield. Positioned near the inner side of the rearview mirror, the signal can penetrate the glass unobstructed and be recognized by the toll station's electromagnetic waves. When installed high, it won't block the driver's view, ensuring driving safety isn't compromised. During installation, use high-strength double-sided tape, clean the glass thoroughly, and then firmly affix it. Some people install it crookedly for convenience, resulting in the signal being blocked by the metal frame and frequent card reading failures. Therefore, it's essential to place it in the central position and avoid dark films that could interfere with transmission. Regular maintenance checks for stability are all that's needed.


