Yes ETC is to realize electronic payment in the non-stop passage of expressway. It is necessary to install OBU (Vehicle Electronic Tag) equipment on the vehicle, insert ETC credit card, and automatically deduct the toll from ETC credit card through ETC crossing to realize automatic payment without stopping. I operate CCB ETC credit card. It's really convenient to take the ETC highway now, so you don't have to wait in line for parking, and then order once a month. Usually, when you don't cross the highway, take out your card and use it as a credit card. One card is multi-purpose, which is good!