What is the best location to install an in-car ETC?

[PaigeMarie]

For small cars, the ETC is generally installed in the upper middle part of the front windshield, while for large vehicles such as 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. If the vehicle has an anti-explosion film or if one is installed later, it may affect the signal transmission of the microwave communication link, and the ETC should be installed in the microwave skylight zone. ETC stands for Electronic-Toll-Collection, meaning electronic toll collection system. To apply for it, you need to provide the original and photocopies of the vehicle owner's valid ID card and vehicle registration certificate. If someone other than the owner is handling the application, they also need to bring their own valid ID card. The photocopy of the vehicle registration certificate should include the page with the most recent annual inspection stamp. Additionally, a bank card for deducting highway tolls is required, and the vehicle must be registered under the name of an individual aged between 18 and 60. 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 can reduce the driver's field of vision. If this is not considered during ETC installation, 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 black 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-removal lever connected to a switch. After the electronic tag is installed, the windshield will press the anti-removal 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. 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 toll payment for the front vehicle. The recognition speed for ETC lanes is 20 kilometers per hour. Driving too fast may result in failure to read the vehicle's device information, leading to failed toll deductions. When using a debit card linked to ETC, insufficient balance may also cause toll deduction failures.

[LaRowan]

I've installed ETC devices multiple times myself, and found the most reliable spot is near the rearview mirror on the windshield. Think about it - this gadget relies on solar charging, and its antenna must directly face the toll station equipment for proper signal reception. If stuck too far to the side where it blocks visibility, checking mirrors becomes distracting and dangerous, especially on highways. The ideal position is slightly center-left on the passenger side. Clean the glass thoroughly first, then secure it firmly without repositioning, as movement might affect battery or signal. Some windshields have sunshade strips or metallic layers - avoid those spots as they weaken signals. From experience, this location won't interfere with airbag deployment or bump your head. Overall, choosing the right position saves hassle and prevents repeated adjustments.

[DallasMarie]

I always remind my friends that ETC installation should prioritize safety and not be done haphazardly. I think the most suitable position is the center top of the front windshield, like near the rearview mirror. This way, the antenna faces forward with excellent signal reception, doesn't obstruct the view, and won't distract the driver's focus on the road. Some people install it on the passenger side for convenience, but in case of an accident where the airbag deploys, it could fly off and cause injury—definitely not worth it. Before installation, remember to clean the glass thoroughly to remove dust and ensure it's firmly attached to prevent falling off. Personally, I often use mobile navigation, and if the ETC is placed too far to the side, it might interfere with radar signals, affecting accuracy. In short, balancing safety and signal reception is key.