Idaho's permit process depends on your age and on the license class you apply for, so it pays to read the rules for your own situation. As of 2026 this guide is a starting point only. Confirm every detail with the Idaho Transportation Department (itd.idaho.gov) and the official Idaho Driver's Manual before you book a visit.
Age and the knowledge test
The Idaho Driver's Manual confirms that the knowledge test has 40 questions and that you may miss up to 6 of them, which means 34 correct answers is the cutoff. That leaves less room than it sounds like, because sign questions and number questions tend to sit side by side. Minimum ages and permit types vary by license class, so check the official handbook for the exact age that applies to you.
Supervised practice and who can supervise
Idaho's graduated driver license (GDL) program requires a period of supervised instruction before a teen can test for a license. For the GDL route, the supervisor must be age 21 or older. The Class D instruction permit is handled differently, so do not assume the same supervisor rule applies there. Check the official handbook before you plan your practice drives.
- Keep a written log of every supervised drive, with date, length and conditions.
- Mix in night driving, rain, and busy roads once you are comfortable in quiet areas.
- Ask your supervisor to quiz you on signs while you ride as a passenger.
Rules and numbers Idaho tests like to ask about
- Headlights: dim your high beams within 500 feet of an oncoming vehicle.
- Following: dim your high beams within 200 feet of a vehicle you are following.
- Under 17: the handbook describes license penalties for younger drivers, including 30-day and 60-day periods. Read exactly which violations trigger each one.
500 feet and 200 feet are easy to swap on a quick read. Write them on a card as 'oncoming = 500, following = 200' and review it before each practice test.
Graduated license restrictions
Teens in the GDL program face extra limits after the supervised stage, such as passenger and nighttime rules. These details are changed from time to time, so rely on the current handbook and ITD instead of memory or a friend's experience. If a rule has a number attached, it is a good candidate for a test question.
How to prepare
- Download the current Idaho Driver's Manual and read one chapter a day.
- Learn signs by shape and color first, then by meaning.
- Take timed practice tests of 40 questions so the real length feels familiar.
- Count your misses. If you are over 6 in practice, review those topics before booking.
- Re-read every wrong answer and say out loud why the right one is right.
What to bring
Document lists change, and minors usually need extra paperwork such as parent or guardian involvement. Look up the current list on itd.idaho.gov before your visit, and ask the office about fees and accepted payment instead of guessing. Arriving with the wrong document is the most common reason people are sent home.
DMVZone practice questions are for study only. They are not the real test questions, but they help you practice the kinds of topics the Idaho test covers.