Can I switch to C2 after failing the C1 subject 2 test once?

[SanRosalie]

C1 subject 2 test cannot be changed to C2 test after failing, and the test content cannot be changed arbitrarily during the test period; but after passing the test, the C1 test can be changed to C2 test. The C1 test subjects include four items: traffic regulations and related knowledge, field driving, road driving, and safe and civilized driving knowledge. C1 driver's license test passing standards: Traffic regulations and related knowledge (Subject 1) - written test, full score is 100, 90 or above is passing. Field driving (Subject 2) - on-site, actual vehicle. The minimum requirement is 80 points, below 80 is failing. Road driving (Subject 3) - highway or simulated site, actual vehicle. Full score is 100, must reach 90 or above to pass. Safe and civilized driving knowledge - written test, questions are mainly in the form of cases, pictures, animations, etc., question types include judgment questions, single-choice and multiple-choice questions, a total of 50 questions, full score is 100, 90 is passing. C1 application age: The minimum age limit for a C1 driver's license is 18 years old, and there is no upper age limit. However, applicants over 70 years old must pass tests on memory, judgment ability, reaction ability, etc.