Integration of etc driving recorder in China Construction Bank. At present, the number of ETC users has exceeded 72 million, and the proportion of vehicles using ETC at the entrance of expressway has reached over 90%. Moreover, the expressway has realized the nationwide ETC networking operation, and the hardware support has a good foundation. This undoubtedly shows that ETC has become one of the standard vehicles after the driving recorder. With the popularity of ETC equipment, major banks have lowered the installation threshold, all of which are free to apply for and install, but the premise is to apply for the corresponding bank's credit card (partially supporting debit card) and freeze a part of the amount, ranging from 300-2000 yuan. The freezing amount of major banks varies, and the toll discount ranges from 9.5% to 7%.