The toll is 15% off. With this public security convenience dragon card, you can buy the ETC equipment of the high-speed citizen pass card, that is, the OBU equipment is 15% off. The original price is 320 yuan/set. If you give a 15% discount, it will be 175 yuan/set. Put it in the car, insert the card and you can use it through ETC. In addition, there are special features of the car, such as preferential annual inspection, fines for traffic violations, annual fees for roads and bridges, preferential car washing and free drunk driving.