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Iowa practice test: 12 questions from Iowa Code Ch. 321
Every Iowa question cites the Iowa Code Ch. 321 section or federal standard it tests. Pick a test and start.
- Exam Simulator25 questions, pass with 20, scored the way Iowa DOT scores it
- Practice Test 120 questions, a broad first pass across signs, right of way, rules and safety
- Road Signs Full197 questions, every sign, signal and pavement marking question
- Laws and Limits12 questions drawn from the Iowa Code Ch. 321
14 tests, all free, all scored the IA way.
The essentials
Signs, signals and right of way
The rules that get you fined
The exam simulator
254 questions, 12 of them written for Iowa.
The Iowa bank runs to 254 questions. 12 are written for Iowa specifically from the Iowa Code Chapter 321, Motor Vehicles and Law of the Road, 60 make up the shared national core of right of way, rules of the road and safety that every state tests, and 182 are sign recognition cards with official MUTCD sign artwork (public domain, via Wikimedia Commons). 8 of the 254 are rated hard, 2 of those from Iowa's own set.
Iowa DOT does not publish the exam format where we could confirm it, so the numbers above are our best information rather than a verified fact. Check with Iowa Department of Transportation, Motor Vehicle Division before your appointment.
The 12 questions written for Iowa.
These 12 split into 7 on rules of the road, 3 on safety and impairment and 2 on right of way, and each one names the rule it tests, so you learn the Iowa Code Ch. 321 section rather than just the answer. The rest of the bank is the shared national core and the sign artwork every state uses. Here is what Iowa asks from its own code, and where each question comes from.
- Iowa's minor school license lets an eligible teen drive alone between home and school activities. How far from home does that license reach? Iowa Code Chapter 321 - special minor's school license, rated hard
- Iowa's zero tolerance law costs a driver under 21 their driving privileges at what blood alcohol concentration? Iowa Code Chapter 321J - operating while intoxicated, drivers under age 21
- Iowa's move over law requires drivers to change lanes or slow down for stopped emergency vehicles. Which of these has Iowa also added to that same protection? Iowa Code 321.323A (move over law)
- Iowa's hands free law took effect in 2025. What does it prohibit a driver from doing while the vehicle is in motion? Iowa Code Chapter 321 - hands free use of electronic devices while driving
- Iowa enforces its seat belt law as a primary offense. What does that mean for an Iowa driver? Iowa Code 321.445 - safety belt and safety harness use
- Compared with the age 8 cutoff many states use, at what age does Iowa law generally allow a child to move out of a required child restraint system and into a regular seat belt alone? Iowa Code 321.446 (child restraint devices)
- At what age can a teenager in Iowa first obtain an instruction permit, one of the youngest starting ages in the country? Iowa Code Ch. 321 (graduated license provisions)
- How much supervised driving must an Iowa permit holder log before moving up to an intermediate license? Iowa Code Chapter 321 - graduated driver licensing requirements
- On an Iowa road outside a city with no posted speed limit sign, what speed does state law generally set as the default maximum? Iowa Code 321.285 (speed restrictions)
- Apart from the sunset to sunrise rule, Iowa law requires headlights whenever people and vehicles ahead cannot be seen at what distance? Iowa Code Chapter 321 - when lighted lamps are required
- An Iowa teen holding an intermediate license may not drive unsupervised during which hours? Iowa Code Chapter 321 - intermediate license restrictions, rated hard
- A school bus ahead of you on a two lane Iowa road stops and extends its stop arm to load children. What must you do under Iowa law? Iowa Code 321.372 (school bus stop requirements)
20 of 25 correct, 5 misses allowed.
The Iowa Department of Transportation, Motor Vehicle Division knowledge test is 25 questions and you pass at 20, which is 80% or higher (the figure Iowa DOT publishes for its own practice test), so 5 wrong answers is the margin before it ends. The exam simulator draws that exact count and pass mark and scores it the way Iowa DOT does.