Where is the best location for ETC?

[VonGeorge]

The ETC installation position is generally in the upper middle part of the front windshield horizontally, while for large vehicles such as trucks and buses, it is installed 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 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, it should be installed in the microwave sunroof strip. ETC stands for Electronic-Toll-Collection, meaning electronic toll collection system. To apply, the vehicle owner needs to provide original and photocopies of their valid ID card and vehicle license. If the application is not made by the owner themselves, a valid ID card of the agent is also required. The photocopy of the vehicle license should include the page stamped with the most recent annual inspection seal. A bank card for deducting highway tolls is also needed, and the vehicle must be registered under an individual aged between 18 and 60. Documents required for company vehicles: Introduction letter from the vehicle owner (with official seal); Copy of the organization code certificate or business license (with official seal); Original ID card of the agent; Original vehicle license; The vehicle for which ETC is to be applied. Here are some 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 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 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 that can charge itself. Therefore, during installation, avoid the black areas on the windshield and positions that may block the solar panel. Once installed, do not remove it casually: The button in the middle of the adhesive is an anti-removal lever connected to a switch. After the electronic tag is installed on the windshield, the anti-removal lever will be pressed in. If removed casually, the lever will pop out and trigger the switch, locking the electronic tag and rendering it unusable. You will then need to go to an ETC service point to unlock it. This is designed to prevent multiple vehicles from sharing one device. Things to note when using ETC: The ETC transaction sensing area 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 in front to avoid automatic sensing and paying for the vehicle in front. The recognition speed for ETC lanes is 20 kilometers per hour. Driving too fast may result in failure to read the vehicle device information and cause payment failure. When using a debit card linked to ETC, insufficient balance may also lead to payment failure.

[FelixLee]

I've been commuting by car for over a decade and have extensive experience installing ETC devices. The optimal position is dead center at the top of the windshield, right behind the rearview mirror. Through my own trial and error during installation, I found this spot provides the strongest signal reception with almost no toll collection failures, while maintaining clear driving visibility. Previous attempts placing it too low caused interference from wiper movement, while higher positions made it prone to wind-induced shaking and detachment. Using high-quality double-sided tape for fixation is crucial – don't cut corners with cheap alternatives, or you risk windshield cracks in cold winters. Regular position checks for looseness are essential, as toll system failures on highways can be particularly frustrating. For different vehicle types like SUVs or sedans, the position remains similar, but avoid the black rearview mirror bracket area as it interferes with signals. Always conduct multiple toll payment tests after installation for peace of mind.

[DiTravis]

From a professional perspective, the placement of the ETC installation is indeed crucial. The upper-middle section of the windshield is the golden zone because it is close to the front sensors, ensuring stable signal transmission. Having used various tools, I can confirm that this is important—placing it incorrectly, such as too close to the edges, may block or interfere with toll signals. During installation, thoroughly clean the glass with a cleaner to ensure no dust remains, or the adhesive won’t hold. I recommend using strong double-sided tape, avoiding corrosive types to prevent damage to the glass coating. Windshield thickness varies by vehicle, so custom adjustments are advised—for example, lower placement works better for sedans, while SUVs require slightly higher placement to avoid shaking. Don’t forget to check the device orientation; the antenna must face the toll booth direction. For maintenance, avoid direct sunlight to prevent aging.

[ODante]

Safety first, I always emphasize not to place the ETC device randomly. The most suitable spot is at the top center of the windshield, near the rearview mirror, where it won't obstruct your view and poses no risk when airbags deploy. I've seen cases where people placed it on the side, leading to toll collection failures and even causing scratches. Just find a stable position and you'll be fine.