Motor vehicle driver's license training and examination have clear class requirements. This class is to ensure that students can fully grasp the basic knowledge and skills of traffic safety laws and regulations and motor vehicle driving, and drive motor vehicles safely and legally.

Class time is required to ensure the safety of students and the public, and also to maintain road traffic order. Therefore, when the prompt "Subject 1 did not participate in driver training", it means that students have not reached the required class hours and need to continue to complete the class hours before they can take the exam of Subject 1.