Although each state sets its own number of questions for the written part of the driving permit test, CarsDirect notes that test takers can expect to answer between 25 and 40 questions. People can find out the exact number of questions on their state's permit test by calling or visiting a local department of motor vehicles.
The written permit test usually is based on information included in the state's driver's manual, and this manual and practice questions are often available online. Some common topics covered include parallel parking, defensive driving, intersections, turns, traffic control, passing, road signs and special driving conditions. Although the passing score depends on the state, CarsDirect reports that 80 percent is common.