Iowa DMV Permit Practice Test 2026

This page covers what you need to know for the Iowa driver's license knowledge exam: how the test works, the Iowa-specific rules that often show up on it, and sample questions with explained answers. Everything here is based on the official Iowa driver's manual and state traffic code (sources are listed at the bottom). The real Iowa test has 35 questions and you need 28 correct (80%) to pass.

When you're ready, take a free 25-question practice test that mixes Iowa-specific questions with general driving questions, with an explanation after every answer. Each attempt draws a new set. No signup needed.

Iowa Permit Test and Licensing Facts

Knowledge Test	35 questions, must score 28/35 (80%) to pass
Minimum Permit Age	14
Minimum License Age	16
Speed Limits	Highway: up to 70 mph \| Residential: 25 mph \| School Zone: 25 mph
OWI Law	BAC limit: 0.08% (Under 21: 0.02%)
Point System	No point system. Iowa tracks violations and may impose sanctions based on severity.

Rules Specific to Iowa

Iowa uses the term OWI (Operating While Intoxicated) and has some of the strictest repeat offender laws
Iowa allows learner's permits at age 14, among the youngest in the nation
Iowa does not use a point system — the DOT reviews each driver's record individually

Sample Iowa Permit Test Questions

These questions cover rules that are specific to Iowa. They're the ones people most often miss, because the answer differs from state to state.

What is the per se BAC limit for most adult drivers?
- A. 0.05%
- B. 0.08%
- C. 0.10%
- D. 0.16%
Answer: 0.08%. A BAC at or above this level can support an OWI charge based on alcohol concentration. You can still be charged at lower levels if impaired.
For drivers under 21, Iowa’s underage OWI threshold begins at what BAC level?
- A. 0.00%
- B. 0.02%
- C. 0.05%
- D. 0.08%
Answer: 0.02%. Underage drivers face alcohol-driving consequences at very low BAC levels. If you’ve consumed alcohol, do not drive.
Under Iowa law, until what age must a child be secured in an approved child restraint system rather than relying only on a seat belt?
- A. Up to age 4 (through age 3)
- B. Up to age 6 (through age 5)
- C. Up to age 8 (through age 7)
- D. Up to age 10 (through age 9)
Answer: Up to age 6 (through age 5). Young children must be protected with a properly used car seat or booster appropriate for their size. Follow the restraint manufacturer’s instructions.
Unless a different limit is posted, what is the speed limit on Iowa primary roads?
- A. 45 mph
- B. 55 mph
- C. 60 mph
- D. 70 mph
Answer: 60 mph. Primary roads, urban interstates, and secondary roads (in daylight) default to 60 mph. Rural interstates default to 70 mph.
Under Iowa law, parking is prohibited within what distance of a fire hydrant?
- A. Within 3 feet
- B. Within 5 feet
- C. Within 10 feet
- D. Within 15 feet
Answer: Within 5 feet. Keeping hydrants clear helps emergency crews connect quickly. Obey any local signs that require a greater distance.
Unless posted otherwise, what is the speed limit in an Iowa business district?
- A. 15 mph
- B. 20 mph
- C. 25 mph
- D. 30 mph
Answer: 20 mph. Iowa defaults: 20 mph in business districts, 25 mph in residential or school districts, and 45 mph in suburban districts.
What is Iowa's default speed limit in a residential or school district?
- A. 15 mph
- B. 20 mph
- C. 25 mph
- D. 30 mph
Answer: 25 mph. Residential and school districts default to 25 mph unless posted otherwise.
What is the default speed limit on Iowa rural interstate highways?
- A. 60 mph
- B. 65 mph
- C. 70 mph
- D. 75 mph
Answer: 70 mph. Rural interstates default to 70 mph. Primary roads and urban interstates default to 60 mph.
What is Iowa's default speed limit for a vehicle pulling another vehicle?
- A. 35 mph
- B. 45 mph
- C. 55 mph
- D. 65 mph
Answer: 45 mph. Any vehicle pulling another vehicle is limited to 45 mph unless posted otherwise.
When approaching a stopped Iowa school bus from behind with its stop arm out, how close may you stop?
- A. No closer than 5 feet
- B. No closer than 10 feet
- C. No closer than 15 feet
- D. No closer than 50 feet
Answer: No closer than 15 feet. Stop no closer than 15 feet from the rear of the bus and stay stopped until the arm retracts and the bus moves.
In Iowa, you may not park closer than how many feet to a stop sign?
- A. 5 feet
- B. 10 feet
- C. 20 feet
- D. 30 feet
Answer: 10 feet. Iowa rules: no parking within 5 feet of a hydrant, 10 feet of a stop sign, 20 feet of a fire station entrance, or 50 feet of a railroad crossing.
In Iowa, you may not park closer than how many feet to a railroad crossing?
- A. 15 feet
- B. 25 feet
- C. 50 feet
- D. 100 feet
Answer: 50 feet. Parking closer than 50 feet to a railroad crossing is prohibited.
Which vehicles must always stop within 15 to 50 feet of railroad tracks in Iowa?
- A. All passenger cars
- B. School buses, charter buses, passenger-for-hire drivers, and placarded hazmat vehicles
- C. Only trucks over 10,000 pounds
- D. Motorcycles
Answer: School buses, charter buses, passenger-for-hire drivers, and placarded hazmat vehicles. School buses, charter buses, rideshare and other passenger-for-hire drivers, and placarded hazmat vehicles must stop within 15 to 50 feet.
In Iowa, you may not pass within how many feet of a railroad crossing or intersection?
- A. 50 feet
- B. 100 feet
- C. 200 feet
- D. 500 feet
Answer: 100 feet. Don't pass within 100 feet of a railroad crossing, an intersection, or a signed narrow bridge, viaduct, or tunnel.
What does Iowa's distracted driving law prohibit?
- A. Only texting at night
- B. Using a handheld device to write, send, or view messages, or to call or dial unless hands-free
- C. Only watching video
- D. Nothing for drivers over 18
Answer: Using a handheld device to write, send, or view messages, or to call or dial unless hands-free. You can't use a handheld device to text, view messages, watch video or social media, or call or dial unless you're using hands-free or voice activation.
Can an Iowa driver under 18 with an instruction permit or intermediate license talk on the phone while driving?
- A. Yes, hands-free
- B. No, unless stopped off the traveled roadway
- C. Yes, at red lights
- D. Yes, for short calls
Answer: No, unless stopped off the traveled roadway. Drivers under 18 with a permit or intermediate license can't make or take calls unless the vehicle is stopped off the roadway.
What are the consequences in Iowa for refusing a breath test?
- A. A warning
- B. Automatic one-year revocation and a minimum $1,250 fine
- C. 90-day suspension
- D. Fine only
Answer: Automatic one-year revocation and a minimum $1,250 fine. Refusal brings an automatic one-year revocation and a minimum $1,250 fine, which is harsher than failing the test.
When must an Iowa crash be reported to police?
- A. Only if a car is towed
- B. If anyone is injured or killed, or property damage is more than $1,500
- C. Only if damage is over $5,000
- D. Never, if both drivers agree
Answer: If anyone is injured or killed, or property damage is more than $1,500. Report crashes with injury, death, or property damage over $1,500 within 72 hours, or lose your driving privileges.
What is the fine for a seat belt violation for a passenger under 18 in Iowa?
- A. $25
- B. $50
- C. $100
- D. $250
Answer: $100. The penalty is up to $50 per passenger, and $100 per passenger under 18.

Iowa Permit Test FAQ

How many questions are on the Iowa permit test?

The Iowa knowledge test has 35 multiple-choice questions. You need at least 28 correct answers (80%) to pass.

How old do you have to be to get a learner's permit in Iowa?

The minimum age for a learner's permit in Iowa is 14. The minimum age for a driver's license is 16.

What is the legal blood alcohol limit in Iowa?

Iowa calls impaired driving OWI. The limit is 0.08% BAC for drivers 21 and over, and 0.02% for drivers under 21.

How does the Iowa driver point system work?

No point system. Iowa tracks violations and may impose sanctions based on severity.

What are the default speed limits in Iowa?

Typical limits in Iowa are up to 70 mph on highways, 25 mph in residential areas and 25 mph in school zones. Posted signs always take priority.

Sources

The facts and questions on this page are based on the following official Iowa government sources:

Facts and questions last checked against the Iowa Driver's Manual on September 26, 2026.

Laws change. Always check the current Iowa driver's manual before your test. This site is unofficial and not affiliated with any Iowa government agency.