Where is the ETC installed?
2 Answers
The ETC is generally installed in the upper middle part of the front windshield for passenger cars, while for large vehicles such as trucks and buses, it is installed in 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 factory-installed or aftermarket explosion-proof film, which may affect the signal transmission of the microwave communication link, the ETC should be installed in the microwave skylight zone. ETC stands for Electronic-Toll-Collection, meaning electronic toll collection system. To apply for ETC, the vehicle owner needs to provide their valid ID card and the original and photocopy of the vehicle registration certificate. If the application is made by someone other than the 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 tolls is needed, and the vehicle must be registered under the name of an individual aged between 18 and 60. For company vehicles, the required documents include: An introduction letter from the vehicle owner (with company seal); photocopy of the organization code certificate or business license (with company seal); original ID card of the agent; original vehicle registration certificate; and the vehicle that needs to have ETC installed. Here are some precautions for installing ETC: Do not obstruct the driver's view. It is best to install it behind the rearview mirror: Many car models have a steeply inclined windshield, which can reduce the driver's field of vision. If the ETC is installed without considering this, it 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 that can charge itself. 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 rod connected to a switch. After the electronic tag is installed on the windshield, the anti-tamper rod is pressed in. If the tag is removed arbitrarily, the rod will pop out and trigger the switch, locking the electronic tag and rendering it unusable. In this case, you will need to visit an ETC service point to unlock it. This mechanism is designed to prevent multiple vehicles from sharing a single device.
The installation position is usually on the upper central area of the inner side of the front windshield, near the rearview mirror. After years of driving, I've always preferred that spot for several reasons: it provides the best signal reception, allows for quick scanning by toll station antennas to avoid manual queues, and ensures stable power supply via solar panels or the cigarette lighter. Once, I placed it too close to the edge, resulting in poor signal reception and causing a frustrating backup at an intersection with honking cars behind me. Safety-wise, it doesn’t obstruct the driver’s view—choosing a spot that doesn’t block the transparent glass area is ideal. Use strong double-sided adhesive for installation to prevent detachment, especially in hot weather when the glue can soften. Periodically check the adhesive to ensure it hasn’t loosened. In short, positioning is key—correct installation ensures smooth and efficient toll passage. Adjust based on the vehicle type: SUVs may require a higher placement, while sedans should be centered, but avoid careless positioning that could affect driving.
