Where is the best position to install ETC in a vehicle?
3 Answers
For small cars, the ETC device is generally installed on the upper-middle part of the front windshield, while for large vehicles like trucks and buses, it is installed on the lower-middle part. The suitable installation position should be at a height 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 ETC 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 processed by a non-owner, the agent's valid ID card is also required. The photocopy of the vehicle registration certificate should include the page with the most recent annual inspection seal. Additionally, a bank card for deducting highway toll fees is needed, and the vehicle must be registered under the name of an individual aged between 18 and 60. Here are some considerations for installing ETC: Do not obstruct the view; it's best to install it behind the rearview mirror: Many car models have windshields with a large backward tilt angle, which can reduce the driver's field of vision. Installing the ETC without considering this 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 arbitrarily once installed: The button in the middle of the adhesive is an anti-removal lever connected to a switch. Once the electronic tag is installed on the windshield, the anti-removal lever is pressed in. If the tag is removed arbitrarily, the lever will pop out and trigger the switch, locking the electronic tag and rendering it unusable. In such cases, you need to visit an ETC service point to unlock it. This mechanism is designed to prevent multiple vehicles from sharing one device. Precautions for using ETC: The ETC transaction sensing range is 8 meters. To avoid issues caused by the ETC device failure of the vehicle in front, maintain a distance of more than 10 meters from the vehicle ahead to prevent automatic toll deduction for the wrong vehicle. The ETC lane recognizes vehicles at a speed of 20 kilometers per hour; driving too fast may result in failure to read the vehicle's device information and unsuccessful toll deduction. When using a debit card linked to ETC, insufficient balance may also cause toll deduction failure.
As a car enthusiast, I recommend placing the ETC device on the upper center of the inner windshield, near the rearview mirror, typically where there's a black dotted area along the glass edge. Why? Because the ETC needs to communicate with toll stations via signals, and this spot on the windshield offers the best signal penetration with minimal metal interference. If placed on the dashboard or inside the glove box, metal components inside the car may block the signal, leading to failed detection at toll booths—forcing you to stop and pay manually, which wastes time and is embarrassing. During installation, first clean the glass surface with alcohol to remove grease, then secure the device firmly using the provided double-sided tape. Regularly check the adhesive to prevent loosening or detachment. Some drivers place it in front of the steering wheel for convenience, but this obstructs visibility and distracts while driving, posing safety risks. Overall, the central position ensures both functionality and safety—simple and hassle-free. This is my experience for your reference.
I used to wonder where to place the ETC device. The first time I installed it, I casually stuck it on the dashboard, but it didn’t respond at the toll gate, and the attendant had to stop me, almost causing a delay. Later, I checked some information and consulted a technician, then moved it to the dotted area on the windshield near the rearview mirror. Since then, it has smoothly detected all passes. After over two years of use, the signal has remained stable without any issues. I advise new car owners not to repeat my mistake—the windshield is the most reliable spot, as the device’s built-in battery and antenna are designed to work optimally there. Never take shortcuts by placing it near the door or under the seat, as the metal frame can block the signal, causing misreads or failures. While driving, make sure the device doesn’t fall, as it could affect safety. This placement is hassle-free and ensures smooth journeys. Just remember to clean the glass with a damp cloth before firmly attaching it.
