Can ETC be installed without attaching it to the windshield?

[LoganFitz]

ETC does not have to be attached to the windshield. Installing the ETC on the upper part of the windshield is to minimize obstruction of the driver's view and to ensure better recognition by highway toll station equipment. If you prefer not to install it on the windshield, place it in an open area where it can still be seen through the windshield. For small cars, the ETC 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 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. If the vehicle has or will have an anti-explosion film, which may affect microwave signal transmission, the ETC should be installed on the microwave window strip. Here are some considerations for ETC installation: 1. Do not obstruct the view; it's best to install it behind the rearview mirror: Many car models have windshields with a steep incline, which can reduce the driver's field of vision. Installing the ETC without considering this may increase blind spots. Installing it behind the rearview mirror on the right side can help avoid blocking the view. 2. Do not interfere with charging: The ETC electronic tag consumes power but generally does not require charging or battery replacement, as it has a solar panel on the back for self-charging. Therefore, avoid installing it on the blackened areas of the windshield or where the solar panel might be blocked. 3. Do not remove it arbitrarily once installed: The adhesive in the middle has an anti-removal lever connected to a switch. Once installed, the windshield presses the lever in. If removed arbitrarily, the lever will pop out, triggering the switch and locking the electronic tag, rendering it unusable until unlocked at an ETC service point. This is designed to prevent multiple vehicles from sharing one device. ETC usage tips: - The ETC transaction sensing range is 8 meters. To avoid paying for the vehicle in front due to its faulty ETC device, maintain a distance of at least 10 meters from the vehicle ahead. - The ETC lane recognizes speeds up to 20 km/h. Driving too fast may result in failure to read the vehicle's device information, leading to payment failure. - When using a debit card linked to ETC, insufficient balance may also cause payment failure.

[McElias]

As a driver with twenty years of experience, I've found that ETC doesn't necessarily have to be installed on the windshield, but signal issues must be considered. The standard installation is against the inner side of the glass because there's no metal obstruction there, ensuring the toll station antenna can read the signal smoothly. However, if you want to avoid adhesive marks or prefer more flexibility, I often recommend using static cling stickers or purchasing a dedicated mount for the dashboard. Just make sure to choose the right spot—it must be close to the center of the front window without dark tint films blocking the light. I once helped a friend test placing it near the air vent, but it occasionally failed to recognize because the metal parts interfered. It's best to test it several times after installation to ensure smooth passage through toll gates at high speed. Remember, safety comes first—don't block your view, or it could cause trouble while driving. If you're really unsure, consult a professional shop for adjustment; they use tools to quickly locate the optimal spot.

[VonJaxon]

When I installed my own ETC, I struggled with the windshield issue and ultimately chose a method that doesn't directly stick to the glass. In principle, ETC is a radio communication device, and attaching it to the windshield ensures signal stability. But if you're like me and prefer cleanliness, you can use a small bracket to fix it on the dashboard or above the center console, as long as it's within about 10 cm of the windshield. The key is to avoid areas with anti-explosion film, especially metal film, which can block signals and cause failure at toll booths. I tested placing it in the lower right corner of the front window and succeeded a few times, but the signal weakened slightly on rainy days. Fortunately, there are alternatives like magnetic brackets or removable stickers that reduce adhesive residue. Don't forget to check the user manual first—many brands allow non-glass installation as long as you perform a signal test in the car to confirm it works.

[Jasmine]

The core goal of installing ETC is to ensure unobstructed signal transmission, and the windshield is not the only option. In practice, I've found that many people use dashboard mounts, placing them near the driver's side. For example, fixing it on a flat area at the front of the car, but avoiding metal accessories like air vents or the edges of the navigation screen. Signal testing is straightforward: drive to an ETC test point, and if the barrier lifts smoothly, it works. If it fails, check the mount position or add a signal amplifier spacer. This method suits owners who want to avoid adhesive marks and makes maintenance easier.