In Hawaii, you must have a driver's license or learner's permit to operate a motor vehicle on public roads. When you apply for a driver's license or an instruction permit, you will need to take the following tests: Rules of the road, Vision, and Recognition of traffic control devices. Before taking the road test, you must first pass these tests. The HI DMV written test is based on information from the Hawaii Driver's Manual and is meant to assess your knowledge of road signs, traffic laws, road rules, and safe driving practices. There are 30 questions in the knowledge test, and you must get at least 24 accurate answers to pass (80%). Let's start with our Hawaii permit test now.