A valid driver license or learner's permit is a must for anybody operating a motor vehicle or motor-driven cycle on Missouri's public roads. As part of the driver examination, you must take a written test, a vision test, a road sign test, and a driving test. The written knowledge test's questions will be based on information from the Missouri Driver's Manual. The written test is intended to assess your understanding of Missouri traffic laws, as well as safe driving rules and road signs. The MO DOR test includes 25 questions, with a passing score of 20 correct answers (80%). Let's start with our Missouri permit test now.