When the driver with a perfect score of 12 appears, his driver's license will be temporarily suspended, and he needs to attend the 7-day road traffic safety laws and regulations and related studies, that is, the study of subject 1. After completing all the studies, dmv will take the test within 20 working days, that is, the exam of subject 1, and can only return the driver's license after passing it. According to the regulations, the cumulative number of days for motor vehicle drivers to participate in on-site learning and online learning shall not be less than five days, and the number of days for on-site learning shall not be less than two days. Therefore, perfect score education is mainly to help drivers improve their awareness of traffic safety and avoid the situation of withholding their driver's license for violating traffic rules.