Can a car only use one ETC?

[DiOscar]

A car can only apply for one ETC. According to the "Implementation Plan for Accelerating the Application Service of Electronic Non-stop Toll Collection on Expressways" issued by the Ministry of Transport, the ETC application is related to the vehicle's license. If you own multiple vehicles, you can use different licenses to apply for ETC. Documents required for ETC application: The original valid ID card of the vehicle owner, the original and photocopy of the vehicle license (the page with the latest annual inspection stamp). If applying on behalf of others, the original valid ID card of the agent is also required. If applying through major bank branches, a debit or credit card from the corresponding bank is needed. Some banks only support ETC binding with credit cards, while others may require freezing a certain amount as a deposit when binding with debit cards. ETC deduction principles: There will be one or more ETC lanes on highways. Through dedicated short-range microwave communication between the onboard electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane, and using computer networking technology for backend settlement with banks, the purpose of paying tolls without stopping at toll stations is achieved. All this is based on the principle of passing first and deducting fees later. Benefits of installing ETC: Time-saving: Eliminates the hassle of waiting in queues; Green and eco-friendly: Low-carbon, as vehicles pass through toll stations without stopping, reducing noise and exhaust emissions; Reduced wear: Saves costs by decreasing the frequency of vehicle starts and brakes, lowering wear and fuel consumption; Improved efficiency: The theoretical efficiency of ETC lanes can be increased by 2-3 times, making traditional ETC faster and more high-tech. Compared to license plate payment, ETC technology is more mature and advantageous. More policy support: The State Council explicitly stated in the "13th Five-Year Plan for the Development of Modern Comprehensive Transportation Systems" that "by 2020, the interoperability of transportation cards in key city clusters will be basically achieved, and the proportion of vehicles equipped with ETC will be significantly increased." It also set a target in the main indicators of the "13th Five-Year" comprehensive transportation development: "by 2020, the ETC usage rate for road passenger vehicles will reach 50%." More future possibilities: In addition to continuously improving the convenience of ETC installation and usage and increasing the ETC usage rate for passenger vehicles, the future will also promote the use of ETC for trucks and explore the deep integration of ETC systems with smart transportation directions such as vehicle-to-vehicle communication and vehicle-road coordination, providing comprehensive travel services for vehicle owners. This means more application scenarios will support ETC applications. ETC usage precautions: The ETC transaction sensing area is 8 meters. When encountering a vehicle in front staying, to prevent the ETC device failure or absence of the vehicle in front, maintain a distance of more than 10 meters to avoid automatic sensing and paying for the vehicle in front. The recognition speed for ETC lanes is 20km/h. If the speed is too fast, the vehicle device information cannot be read, leading to deduction failure. Unauthorized removal or movement of the OBU device, or detachment or loosening of the ETC electronic tag, will cause the electronic tag to fail. It can be sent to the bank where the ETC card was applied for or the highway service office for inspection. Non-human-caused loosening or detachment only requires reactivation. When using a debit card bound to ETC, insufficient balance will also cause deduction failure. Follow the guidance of on-site staff to use the manual MTC lane and pass by cash or card. Poor sensing due to overly thick car windshields. Especially for vehicles that have had accidents and replaced windshields, or those with modified front windshields, extra attention is needed.

[LaLilah]

I've been driving for over a decade and am quite familiar with the ETC system. Generally, it's best to use only one ETC device per vehicle, and avoid installing multiple units. The reason is simple: ETC is linked to the vehicle's license plate number. Installing multiple devices can confuse the system, leading to issues like duplicate charges or missed tolls, which can be a real headache. Once, while helping a friend with car repairs, I discovered he had two ETC devices installed, resulting in a mess of incorrect toll records when entering and exiting highway toll stations. ETC installation is very convenient—just apply at a bank or ETC service point, and it's done in minutes, mounted on the windshield without obstructing the view. In daily use, it saves time by reducing queues, improving fuel efficiency, and enhancing overall convenience. However, remember not to move or remove the device casually to avoid signal disruptions. When changing cars, make sure to deregister the old device promptly to prevent misuse. In short, one ETC per vehicle is the most reasonable approach—don't complicate things by installing extra units, as it can create unnecessary trouble and even affect driving safety.

[MacLaila]

As a new driver who just got my license, I've researched ETC devices. The conclusion is that one vehicle can only be equipped with one ETC unit. Each ETC card is bound to your license plate number, and using multiple systems can easily cause conflicts, such as incorrect toll deductions or recognition failures at toll stations. I previously checked online, and many cases prove that installing two ETC devices may lead to misunderstandings. ETC installation is simple—I got my card from the bank, stuck it on the front windshield, and it's very convenient to use. The benefit is faster highway access without fumbling for change. However, be careful not to damage the device—if it breaks, just replace it instead of repairing it. In daily driving, ETC can also help save some toll fees through points. In short, stick to one ETC per car—don't try to save small money and end up with big problems. For beginners, it's best to have a friend accompany you to the installation point to get it done.

[DeLucia]

Our family car has been using an ETC device, and it works quite smoothly. Indeed, only one ETC device can be used per vehicle because it is linked to the license plate number. Using multiple devices may confuse the system and lead to incorrect toll charges, causing unnecessary trouble. ETC installation is quick and saves a lot of time queuing when taking the kids out for trips. However, avoid installing additional devices to prevent data errors that could result in overcharging. Just stick the device on the windshield and avoid removing it frequently. Daily maintenance is simple—just keep the windshield clean to ensure the signal isn’t blocked. In short, one ETC per car is the most reliable setup—don’t make unnecessary changes.

[OGeorge]

To save money on driving and car maintenance, I insist on using only one ETC device per car. Why? Multiple devices can lead to chaotic billing, such as duplicate charges that waste money. ETC installation is quick—just apply at the bank and stick it in the right spot, saving fuel and time on highways. If the device breaks, replace it promptly without hesitation to avoid trouble. In the long run, sticking to one device is hassle-free and offers rewards like points for gifts.

[RyleeMarie]

From a technical perspective, a vehicle can only use one ETC device. ETC relies on RFID technology to bind to the license plate, and using multiple devices may cause signal conflicts and charging errors. I observe that the system is designed for single-device, single-vehicle use to ensure safety and accuracy. Install it in a proper position to avoid interference and enjoy smooth passage. Don’t waste money on additional devices—once damaged, you can only replace it, so don’t try any tricks.