The ETC device can be installed on the black dots of the windshield, as long as it does not obstruct the driver's view and can sense the detection equipment of the toll station. However, installing it on the black dots of the windshield also has drawbacks, such as reduced solar charging capability of the ETC device, which may lead to power depletion over time. For small cars, the general installation position for ETC is in the upper middle part of the front windshield, while for large vehicles like trucks and buses, the installation position is in the lower middle 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 built-in or aftermarket explosion-proof film, which may affect the signal transmission of the microwave communication link, it should be installed in the microwave window area. Below are the precautions for installing ETC: Do not obstruct the view; it is best to install it behind the rearview mirror: Many car models have a large rearward tilt angle of the windshield, which reduces the driver's field of vision. If this is not considered during ETC installation, it can increase the driver's blind spots. Installing it behind the rearview mirror on the right side can help avoid obstructing 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 for self-charging. Therefore, during installation, avoid the black areas of 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 guide rod connected to a switch. After the electronic tag is installed, the windshield will press the anti-removal guide rod in. If it is removed arbitrarily, the guide rod will pop out and trigger the switch, locking the electronic tag and rendering it unusable. In such cases, you will 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 payment for the front vehicle. The ETC lane recognition speed is 20 kilometers per hour; driving too fast may result in failure to read the vehicle device information, leading to payment failure. When using a debit card linked to ETC, insufficient balance can also cause payment failure.
