Yes, you can't study the theory of subject three for more than 4 hours every day. "Motor vehicle driving training teaching and examination outline" middle school time schedule chapter clearly stipulates:

The theoretical training time of each student shall not exceed 4 hours per day, and the practical training time shall not exceed 4 hours per day.

1, description of subject 3: abbreviation of road driving skills and safe and civilized driving common sense examination subjects in motor vehicle driver examination. Different types of roads have different driving skills tests, which generally include: getting on the bus, starting, driving in a straight line, adding and subtracting gears, changing lanes, pulling over, going straight through intersections, turning left at intersections, turning right at intersections, crossing crosswalks, passing through school areas, passing bus stops, overtaking, turning around and driving at night. The general knowledge test of safe and civilized driving includes: the operating requirements of safe and civilized driving, the knowledge of safe driving in bad weather and complex road conditions, the handling methods of emergencies such as flat tires, and the handling knowledge after traffic accidents.

2. The examination contents of subject 3 include: preparing for the examination of large buses, tractors, city buses, medium buses, large trucks, small cars, small automatic buses, low-speed trucks and small automatic buses for the disabled, starting, driving in a straight line, adding and subtracting gears, changing lanes, pulling over, going straight through intersections, turning left at intersections, turning right at intersections, passing through crosswalks, passing through school areas, and passing. The examination contents of other quasi-driving models shall be determined by the traffic management department of the provincial public security organ.