Etc: abbreviation of electronic toll collection, namely electronic toll collection system. It refers to the vehicle identification, information writing (in) and automatic deduction of the corresponding funds (out) of the pre-bound ic card or bank account through the vehicle-mounted equipment when the vehicle passes through the toll station. It is an electronic toll collection system for roads, bridges and tunnels that is being developed and popularized internationally. With this system, as long as the owner installs the sensor card on the window and pre-stores the fee, there is no need to pay or park manually when passing through the toll booth, and the high-speed fee will be automatically deducted from the card. Although non-stop charging can be realized, generally speaking, vehicles still need to pass at a lower speed. This charging system charges less than two seconds for each car, and the capacity of the charging channel is 5 to 10 times that of the manual charging channel.