The second class hour refers to the training time for learning driving skills, including theoretical study and boarding operation training. According to the relevant regulations, the training time of subject 2 is as follows:

Theoretical study: theoretical study of subject 2 *** 16, including traffic regulations, common sense of safe and civilized driving, knowledge of first aid, first aid for the wounded and related knowledge of dangerous goods, etc.

Train-boarding operation training: 40-hour train-boarding operation training in subject 2, including six major items, such as reversing into the warehouse, side parking, right-angle turning, curve driving, fixed-point parking and ramp start.

According to the regulation of training time, the training time of each class is 45 minutes, so the theoretical study of subject 2 takes 8 hours and the operation training on the train takes 20 hours. However, it should be noted that these class hours are guidance suggestions, and the specific training time needs to be adjusted according to the individual's learning ability and actual situation.

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In the actual learning process, everyone's learning progress and effect are also different, and the specific training time needs to be determined according to personal circumstances. Generally speaking, the training time of subject 2 needs to be comprehensively considered in combination with the actual situation of the individual, such as the mastery of driving skills, the arrangement of learning time, the guidance and suggestions of the coach and other factors.

Generally speaking, the study of subject two needs some time and patience. Only through constant practice and hard work can we master driving skills and successfully pass the exam of subject 2.