Where is the best position to install ETC in a car?
3 Answers
The ETC installation position is generally on the upper middle part of the front windshield for regular vehicles, while for large vehicles like trucks and buses, it is installed on 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 explosion-proof film or those that have it installed later, it may affect the signal transmission of the microwave communication link, so it should be installed in the microwave sunroof strip. ETC is the abbreviation for Electronic-Toll-Collection, meaning electronic toll collection system. To apply, 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. Documents required for company vehicles: Introduction letter from the vehicle owner (with official seal); Photocopy of the organization code certificate or business license (with official seal); Original ID card of the agent; Original vehicle license; The vehicle that needs to apply for ETC. 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 reduces the driver's field of vision. If this is not considered when installing ETC, it will increase the driver's blind spot. Install it behind the right side of the rearview mirror to avoid blocking the view. Do not affect charging: The ETC electronic tag consumes power, but generally does not need to be charged or have its battery replaced because it has a solar panel on the back for self-charging. Therefore, when installing, avoid the black areas on the windshield and do not install it in a position that easily blocks the solar panel. Do not remove it casually once installed: 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 casually, the anti-removal lever will pop out and trigger the switch, locking the electronic tag and making 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.
I've been using ETC for years while driving, and choosing the right location makes it worry-free and hassle-free. It's generally recommended to place it in the upper middle part of the front windshield, right near the rearview mirror. This position doesn't obstruct your driving view, ensures the device sticks firmly to the glass, and works exceptionally well when receiving signals from toll stations. If it's too close to metal edges or placed on tinted glass, it might interfere with signal transmission, causing delays when passing through toll booths. After using it for several years, I’ve found that cleaning the glass surface before installation is crucial—too much dust or grease can make the adhesive tape less secure, leading to the device falling off, which is a big hassle. A well-chosen location also makes it convenient when getting in and out of the car, especially during peak hours—the smooth experience of non-stop toll payment is far better than manually waiting in long queues. Regularly check if the device is loose, as prolonged exposure to wind and rain can cause the adhesive tape to degrade. Overall, installing it there has rarely caused any issues.
From a practical standpoint, the optimal position for ETC installation is the upper center area of the windshield. Based on my experience, this location near the glass centerline ensures stable device adhesion while avoiding critical driving sightlines. Think about it – you don't want any obstructions in your forward view while driving, so this spot guarantees peace of mind. On a related note, ETC operates via electromagnetic wave induction. Metal surfaces or dark tint films may interfere with its signal, and improper positioning could lead to reception failure. This location also minimizes damage from summer sun exposure or winter ice formation on the adhesive tape. Personal recommendation: clean the glass with alcohol wipes before installation for maximum adhesion. Correct installation not only ensures fast lane passage but also extends battery life. Vehicle types may require slight adjustments – SUVs typically need higher placement, while sedans usually work best with central positioning.
