Why does the ETC beep when passing on the highway?
1 Answers
On the highway, the ETC beeps because it uses microwave communication technology. It is normal for it to make a sound when approaching products that use microwave communication, such as cameras, probes, access control systems, and surveillance devices. This does not affect normal usage. How ETC works: Through the onboard electronic tag installed on the vehicle's windshield, it engages in dedicated short-range communication with the microwave antenna in the ETC lane at toll stations. By leveraging computer networking technology for backend settlement processing with banks, it enables vehicles to pass through highway or bridge toll stations without stopping while still paying the required fees. ETC usage precautions: The ETC transaction sensing range is 8 meters. If the vehicle in front stops, maintain a distance of at least 10 meters to prevent automatic sensing and payment for the vehicle ahead, in case its ETC device is faulty or nonexistent. The ETC lane recognizes vehicle speeds of up to 20 km/h. Driving too fast may prevent the system from reading the vehicle's device information, leading to failed deductions. Unauthorized removal or movement of the OBU device, or if the ETC electronic tag falls off or becomes loose, may render the electronic tag ineffective. It can be taken to the bank where the ETC card was issued or to a highway service office for inspection. If the loosening or detachment was not caused by human intervention, reactivation may suffice. When using a debit card linked to ETC, insufficient balance may cause deduction failures. Follow the guidance of on-site staff to use the manual MTC lane, paying with cash or card. Excessively thick windshields may cause poor signal reception. This is particularly relevant for vehicles that have had their windshields replaced after accidents or those with modified front windshields.
