Iowa DOT Exam Simulator
A full-length mock exam: Iowa does not publish a question count; we use 30 questions at its 80% pass mark. New questions every attempt.
How this simulator works
- Knowledge test: 30 questions, 24 correct to pass.
- No time limit, like the real test. Take your time.
- You won’t see whether you were right until the end, just like at the Iowa test. Then you can review every answer with its explanation.
- Questions are drawn fresh from the full Iowa bank each time.
How the real Iowa knowledge test works
Iowa does not publish a question count; we use 30 questions at its 80% pass mark. This simulator follows the same structure, gives no feedback until you finish, and draws a new set of questions from the full Iowa bank every time.
Aim to pass the simulator two or three times in a row, on different days, before you book your test.
Sample questions from this test
What is the youngest age at which you can get an Iowa instruction permit?
- A 15 years old
- B 15 and a half years old
- C 16 years old
- D 14 years old
Show answer
D. 14 years old
Iowa issues an instruction permit at age 14 once you pass the knowledge and vision tests. The permit is the first of three steps in Iowa's graduated driver's license system for drivers under 18.
Source: Iowa Department of Transportation, Motor Vehicle Division website
If no speed limit is posted, what is the limit in an Iowa business district?
- A 25 mph
- B 20 mph
- C 30 mph
- D 35 mph
Show answer
B. 20 mph
Iowa sets a 20 mph limit in business districts when no other limit is posted. Business areas have the most pedestrians, parked cars and turning traffic.
You are in the middle of an intersection when an ambulance with its siren on approaches. What should you do?
- A Stop right where you are
- B Drive through the intersection, then pull to the right
- C Back up out of the intersection
- D Speed up and stay ahead of the ambulance
Show answer
B. Drive through the intersection, then pull to the right
Pull to the right edge of the road when an emergency vehicle approaches from any direction. If you are already in an intersection or roundabout, drive through it first, then pull over.
Under Iowa law, how must a child under one year old who weighs less than 20 pounds ride?
- A In a rear-facing child restraint
- B In a forward-facing booster seat
- C In a seat belt in the back seat
- D On an adult's lap in the back seat
Show answer
A. In a rear-facing child restraint
Iowa requires a child under one year old and under 20 pounds to ride in a rear-facing child restraint system. From then until age six, a child safety seat or booster seat is required.
View diagram
At an all-way stop, two vehicles arrive at the same time. Which one goes first?
- A The vehicle on the left
- B The larger vehicle
- C The vehicle going straight
- D The vehicle on the right
Show answer
D. The vehicle on the right
At an all-way stop, the first vehicle to arrive and stop goes first. When two vehicles arrive together, the vehicle on the right goes first. Remember 'yield to the right'.