The optimal installation position for ETC in small cars is generally in the upper middle section of the front windshield, while for large vehicles like trucks and buses, it is recommended to install it in the lower middle section. The suitable installation height should be no less than 1.2 meters and no higher than 2.5 meters, with an installation angle between 30 to 90 degrees. For vehicles with factory-installed or aftermarket explosion-proof film, which may affect microwave communication signal transmission, the ETC should be installed in the microwave sunroof strip. ETC stands for 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 and vehicle registration certificate. If the application is not made by the owner, the agent's valid ID 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 under the owner's name for deducting highway tolls is required, and the owner must be between 18 and 60 years old. Here are some considerations for installing ETC: Do not obstruct the driver's view; it's best to install it behind the rearview mirror: Many car models have a steeply angled windshield, which can reduce the driver's field of vision. Installing ETC without considering this can increase 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 built-in solar panel on the back for self-charging. 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-tamper lever connected to a switch. After installation, the windshield will press the anti-tamper lever in. If the tag is removed arbitrarily, the lever 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 avoid issues caused by the ETC device malfunctioning in the vehicle ahead, maintain a distance of at least 10 meters to prevent automatic toll deduction for the preceding vehicle. The ETC lane recognition speed is 20 km/h; driving too fast may result in failure to read the vehicle's device information and cause toll deduction failure. If using a debit card linked to ETC, insufficient balance will also lead to toll deduction failure.
