Iowa doesn't publish its knowledge-test length and pass score on an official page we could confirm, so we don't state numbers here. The questions in this quiz are written in the style of Iowa's knowledge test, and Iowa's official driver handbook (linked below) is the source to study from.
Pick an answer on each question to see whether you got it right, with an explanation.
This is a short sample — DriveDrill has 200+ Iowa questions
and full-length mock exams in the app.
Q1. Driving far below the speed limit when conditions are good:
A Is always safestB Can be dangerous and may be a violationC Is required of new driversD Is allowed in any lane
Traffic that moves at very different speeds causes crashes. If you must go slow, stay right and let others pass.
Q2. In Iowa, a driver under 21 found operating while intoxicated with a BAC of at least .02 but under .08 will have driving privileges revoked for a minimum of:
A 10 daysB 60 daysC 180 daysD One year
An underage Iowa driver counts as operating while intoxicated at a BAC of .02 or more; the minimum revocation is 60 days, rising to a minimum of 180 days if the BAC is .08 or higher.
Q3. A flashing red traffic light means:
A Stop, then go when it is safeB The signal is out of order — do not enterC Stop and wait for the light to turn greenD Slow down and proceed with caution
Treat a flashing red exactly like a stop sign: full stop, yield to traffic and pedestrians, then proceed when the way is clear.
Q4. When following a motorcycle you should:
A Follow closer so you are visibleB Leave extra following distanceC Use your high beams to light the wayD Drive beside it in the same lane
Motorcycles are easy to lose behind your own windshield pillar, and even slight contact can spill a rider. Give a motorcycle a full lane and more space than you would a car.
Q5. In Iowa, the Steer It-Clear It law requires that after a crash with no injuries, you:
A Leave your vehicle in the lane and stand behind itB Push the vehicle onto the shoulder only if a tow truck is presentC Leave the vehicle exactly where it stopped until police arriveD Move your vehicle out of the driving lanes if it is operable and can be safely moved
Iowa's Steer It-Clear It law requires drivers involved in a crash with no injuries to move an operable vehicle out of the driving lanes if it can be done safely, reducing the risk of a secondary crash.
Q6. In Iowa, a newly licensed driver under 18 generally may not drive between:
A midnight to 5 a.m.B 10 p.m. to 5 a.m.C 11 p.m. to 5 a.m.D 12:30 a.m. to 5 a.m.
Documented exceptions usually cover work, school activities, emergencies and driving with a licensed adult. Carry the paperwork if you rely on one.
Q7. A conviction for driving under the influence usually results in:
A Points onlyB A warning for the first offense everywhereC A fine that can be paid to avoid a recordD License suspension, fines and possible jail, plus much higher insurance costs
The license consequence is administrative and starts before any court date in most states, and the record follows you for years.
Q8. You are driving through a residential street where children are playing. You should:
A Drive in the center of the roadB Maintain the speed limitC Slow down and be ready for a child to run into the roadD Sound your horn continuously
Children act on impulse and are hidden by parked cars. Cover the brake and cut your speed well below the limit.
Q9. The only thing that reduces blood alcohol concentration is:
A CoffeeB ExerciseC A cold showerD Time
The liver processes alcohol at a fixed rate. Nothing speeds it up, so the only plan that works is not driving.
Q10. In Iowa's manual, staying awake for 18 hours straight is said to impair you as much as a blood alcohol concentration of:
A 0.05 percentB 0.08 percentC 0.15 percentD 0.02 percent
Iowa's manual states that being awake for 18 hours straight impairs a driver about as much as a BAC of 0.08 percent, which is legally drunk.
DriveDrill is an independent study app. It is not affiliated with, endorsed by, or
connected to any state motor vehicle agency. These practice questions are written in
the style of Iowa's knowledge test and are not official test questions.