A valid driver license is mandatory for anybody operating a motor vehicle or motor-driven cycle on Wisconsin's public roads. If you have never had a driver's license before, you must first obtain a learner's permit at a WI DMV Service Center. You must be at least 15 years and six months old and pass the knowledge and highway signs tests, as well as a vision screening, to obtain an instruction permit. The Wisconsin DMV written test is based on the contents of the Wisconsin Driver's Manual and includes questions on road rules, road signs, and safe driving practices. There are 50 questions on the WI DMV written test, and you must get at least 40 accurate answers to pass (80%). Prepare for the official Wisconsin DMV driver's license test by practicing with our practice temps test Wisconsin.