When you apply for ETC credit card, you can enjoy 10% discount on national expressway and other preferential activities. The following is related information about ETC: 1, ETC: Electronic toll collection system is the most advanced intelligent road and bridge toll collection method at present. When the vehicle passes through the toll station, it can realize vehicle identification, information writing and automatically deduct the corresponding funds from the ETC card through OBU. 2.OBU: The vehicle-mounted electronic tag is installed on the front windshield. 3. Advantages of handling ETC: After handling ETC on the expressway, customers can use ETC lanes to achieve rapid traffic without parking fees. The purpose of promoting ETC in expressway is to reduce the waiting time of cash payment, improve traffic efficiency, reduce exhaust emissions and be more conducive to environmental protection travel.