What does ETC beeping mean?

[LePaislee]

If it keeps beeping, it may be a device issue. Here are the relevant explanations: 1. ETC (Electronic Toll Collection): Also known as an automatic road charging system, it is a specialized road tolling method used for toll roads, commonly seen on highways, toll bridges, or tunnels to alleviate urban traffic congestion. 2. Purpose of ETC: 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 at toll stations, it uses computer networking technology to process backend settlements with banks, allowing vehicles to pay tolls without stopping at road or bridge toll stations.