Iowa DMV Practice Test 2026

Practice Questions

12 free Iowa DMV practice questions

Real Iowa-specific questions sourced from the official Iowa Driver Handbook. Read each one, pick your answer, then check the explanation.

1. Question 1 · Right of Way

   At a four-way stop, who has the right-of-way?

   • AThe driver who arrived at the intersection first✓ Correct
   • BThe driver approaching from the left side
   • CThe driver on the busier road

   Why: At a four-way stop, the first vehicle to arrive proceeds first. If two vehicles arrive at the same time, the driver on the left yields to the driver on the right.

   Source: Iowa Driver Handbook, page 19 · Controlled Intersections

2. Question 2 · Speed Limits

   What is a major consequence of driving at excessive speed?

   • AIt helps you navigate around obstacles
   • BIt saves significant travel time
   • CIt greatly increases the risk of serious injury or death✓ Correct

   Why: Excessive speed is a leading factor in crashes and significantly increases the likelihood of serious injury and death. Always adjust your speed to road and traffic conditions.

   Source: Iowa Driver Handbook, page 42 · Speed Control

3. Question 3 · Highway Driving

   When is it especially important to reduce your speed?

   • AOn narrow roads, at intersections, and on wet surfaces✓ Correct
   • BOnly when driving in school zones
   • COnly when passing other vehicles

   Why: Slow down on narrow or winding roads, near intersections and railroad crossings, in curves, and any time the road is wet or slippery.

   Source: Iowa Driver Handbook, page 48 · Adjusting to Conditions

4. Question 4 · Lane Changes & Passing

   What should you do before attempting to pass another vehicle?

   • AOnly check your rearview mirror
   • BCheck your mirrors and blind spots, then signal your intention✓ Correct
   • CAccelerate quickly without signaling

   Why: Before changing lanes or passing, always check your mirrors, look over your shoulder for blind spots, and signal your intentions so other drivers know what you plan to do.

   Source: Iowa Driver Handbook, page 44 · Passing

5. Question 5 · Turns & Intersections

   What should you do before making a turn at an intersection?

   • AActivate your turn signal three to four seconds in advance✓ Correct
   • BSpeed up to complete the turn quickly
   • CChange lanes at the last moment

   Why: Activate your turn signal three to four seconds before your turn to alert other drivers of your intention before you slow down or change position.

   Source: Iowa Driver Handbook, page 43 · Turn Signals

6. Question 6 · Traffic Signs & Signals

   What does a steady green traffic light permit you to do?

   • AAccelerate through without checking the intersection
   • BProceed through the intersection if it is clear✓ Correct
   • CAdjust your mirrors before moving forward

   Why: A steady green light means you may continue through the intersection at a safe speed, yielding to any traffic and pedestrians already in the intersection.

   Source: Iowa Driver Handbook, page 11 · Traffic Signals

7. Question 7 · Pedestrian Laws

   What must you do for a pedestrian using a guide dog or a white cane?

   • AYield only at marked crosswalks
   • BAlways yield the right-of-way to them✓ Correct
   • CHonk to alert them of your presence

   Why: You must always yield the right-of-way to a pedestrian who is using a guide dog or carrying a white cane, regardless of where they are crossing.

   Source: Iowa Driver Handbook, page 18 · When to Yield the Right-of-Way

8. Question 8 · Sharing the Road

   What must you do when a crossing guard directs traffic in a school zone?

   • AFollow the crossing guard's directions✓ Correct
   • BIgnore the guard if traffic seems clear
   • CProceed as if no guard were present

   Why: You must follow the directions given by crossing guards in school zones. Always drive with extra caution and reduced speed near schools.

   Source: Iowa Driver Handbook, page 21 · School Zones

9. Question 9 · Weather & Visibility

   Which headlights should you use in rain, snow, or fog?

   • AHigh beam headlights for maximum visibility
   • BParking lights only
   • CLow beam headlights✓ Correct

   Why: Use low beam headlights in rain, snow, or fog. High beams reflect off precipitation and glare back at you, reducing your visibility even further.

   Source: Iowa Driver Handbook, page 60 · Driving in Bad Weather

10. Question 10 · Accidents & Emergencies

    What should you do when you hear a siren from an emergency vehicle behind you?

    • ASpeed up to clear the path ahead
    • BPull over to the right side of the road and stop✓ Correct
    • CSlow down but continue driving forward

    Why: When you hear a siren behind you, safely pull to the right side of the road and stop to create a clear path for the emergency vehicle. Clear any intersection first.

    Source: Iowa Driver Handbook, page 19 · Emergency Vehicles

11. Question 11 · Parking Rules

    Who may park in spaces reserved for persons with disabilities?

    • AAnyone during off-peak hours
    • BOnly vehicles displaying proper disability plates or placards✓ Correct
    • CAny driver over the age of 65

    Why: Only vehicles displaying Persons with Disabilities plates, Disabled Veteran plates, or a disabled parking placard may use these reserved spaces.

    Source: Iowa Driver Handbook, page 22 · Parking

12. Question 12 · DUI Laws

    How does alcohol consumption affect a person's driving ability?

    • AIt improves reaction time and focus
    • BIt impairs judgment, vision, and vehicle control✓ Correct
    • CIt has no effect on experienced drivers

    Why: Alcohol is a depressant that negatively affects judgment, vision, concentration, and reaction time, making it unsafe to drive. Only time can remove alcohol from your system.

    Source: Iowa Driver Handbook, page 37 · Operating While Intoxicated

How to get your Iowa driver's license

The knowledge test is one step in Iowa's licensing process. Here's how the path typically works for a new driver.

1. 1

   Check the age and eligibility requirements

   Eligibility in Iowa: 14 for an instruction permit; 16 for an intermediate license after completing driver education and supervised driving. Have your proof of identity, residency, and any required parental consent ready.

2. 2

   Study the official handbook

   Read the Official Iowa Driver's Manual (iowadot.gov) and practice with DMV Ace until you're consistently scoring above 80%.

3. 3

   Pass the knowledge test

   The Iowa written test has 35 questions, and you need 28 correct (80%) to pass. Permit/licensing fee: $6 for the instruction permit (valid four years).

4. 4

   Build supervised driving experience

   Hold your permit for the period Iowa requires and log supervised driving hours with a licensed adult before you schedule the road test.

5. 5

   Pass the road test and get licensed

   After you pass the behind-the-wheel road test, Iowa issues your driver's license — often an intermediate/provisional license first for younger drivers.

Steps are a general guide — always confirm the current process with your local Iowa DMV office.

How DMV Ace prepares you for the Iowa test

• 1,000+ Iowa-specific questions

  Every question is sourced from the official Iowa Driver Handbook — same wording style, same topic mix as the real test.

• Explanations on every answer

  Right or wrong, you see exactly why — with a handbook page citation so you can dig deeper.

• Hard Questions module

  A curated bank of the trickiest Iowa questions — the ones most testers fail. Master these and you're ready.

• Smart progress tracking

  See exactly which topics you've mastered and which need work. A pass-readiness score tells you when you're truly ready for the Iowa DMV.