The theoretical training of subject four can be seen in the driving test book, which introduces the theoretical knowledge of subject four in great detail. He has a question bank. You can do all the questions in the library before taking subject four. If you choose the wrong one, it will give you a detailed explanation, and then you can do it again. A total of 1000 questions, and you can also simulate the exam. The driving test collection integrates the test banks in various provinces, cities and regions, and is the first to explain the driving test knowledge intuitively and in detail by means of picture display+text explanation+video demonstration. Students can prepare class A, B and C driver's licenses and study the theoretical exams of subjects 1 and 4 by setting up vehicle models.