Iowa DOT Permit Practice Test 3: 50 Questions
Practice Test 3 has 50 multiple-choice questions on Iowa driving rules, including red X lane control signal, traffic officer authority, hydroplaning response and wheels off roadway. Each answer is explained as soon as you pick it, and every question is listed with its answer in the study guide below.
More Iowa Practice Tests
What Practice Test 3 Covers
The questions in this test ask about:
- Red X Lane Control Signal
- Traffic Officer Authority
- Hydroplaning Response
- Wheels Off Roadway
- Stopped Emergency Vehicle
- Yellow Pennant Sign
- Double Solid Yellow Lines
- Blocked Intersection
- Solid White Edge Line
- Sticking Accelerator
- Tire Blowout Response
- Blue Sign
- Flooded Roadway
- Orange Sign
- Bicycle Warning Sign
- Rumble Strips Purpose
- Animal on Roadway
- Passing Large Truck
- Work Zone Fines
- Shared Center Turn Lane
Try 5 Questions from This Test
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What does a lane control signal with a red X over your lane mean?
Show answer
B. Do not use this lane
A red X means the lane is closed to traffic.
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What is the correct action when your right wheels drop off the roadway?
Show answer
B. Slow down and gently return to pavement
Gradually slowing and easing back prevents loss of control.
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What does a yellow sign with a bicycle symbol mean?
Show answer
B. Bicycle crossing
Bicycle symbols warn of possible crossings.
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What is the purpose of rumble strips?
Show answer
C. Alert inattentive drivers
Rumble strips warn drivers through vibration and sound.
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When driving through a work zone, fines may be:
Show answer
A. Doubled
Penalties are increased in work zones.
Complete Study Guide: All 50 Questions with Answers
Every question in Practice Test 3, with the correct answer and an explanation for each.
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Q1. What does a lane control signal with a red X over your lane mean?
Correct answer: Do not use this lane
Why: A red X means the lane is closed to traffic.
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Q2. When a traffic officer directs traffic at an intersection, you must obey:
Correct answer: The officer’s directions
Why: Directions from a traffic officer override signs and signals.
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Q3. It is raining in Iowa. You see reflections on the pavement and the car ahead leaves no tracks in the water. What does the manual tell you?
Correct answer: Your car could hydroplane, so slow down
Why: If you can see deep water, reflections on the pavement, or the car ahead leaves no tracks in the water, your car could hydroplane. Slow down.
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Q4. What does a white sign with black lettering generally indicate?
Correct answer: Regulation
Why: White rectangular signs usually give regulatory information.
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Q5. When approaching a stopped emergency vehicle on a multi-lane road, you must:
Correct answer: Move over or slow down
Why: Drivers must move over or slow down when approaching stopped emergency vehicles.
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Q6. What is the correct action when your right wheels drop off the roadway?
Correct answer: Slow down and gently return to pavement
Why: Gradually slowing and easing back prevents loss of control.
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Q7. What does a yellow pennant-shaped sign indicate?
Correct answer: No passing zone
Why: Pennant-shaped signs mark the start of a no-passing zone.
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Q8. When may you legally cross double solid yellow lines?
Correct answer: To turn left into a driveway
Why: Crossing double solid yellow lines is allowed for left turns.
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Q9. What should you do if you approach an intersection with a green light but traffic blocks it?
Correct answer: Stop and wait until clear
Why: You must not enter an intersection unless you can clear it.
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Q10. What does a solid white line at the right edge of the roadway indicate?
Correct answer: Edge of the roadway
Why: A solid white edge line marks the roadway boundary.
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Q11. When driving behind a motorcycle, you should:
Correct answer: Allow a full lane width
Why: Motorcycles are entitled to a full lane.
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Q12. What does a yellow diamond sign with a black arrow mean?
Correct answer: Curve or change in roadway
Why: Arrow warning signs alert drivers to curves or changes ahead.
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Q13. What should you do if your accelerator sticks?
Correct answer: Shift to neutral and brake
Why: Shifting to neutral allows you to slow safely.
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Q14. What does a white arrow painted on a lane pointing straight and right mean?
Correct answer: You may go straight or turn right
Why: Lane arrows show permitted movements from that lane.
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Q15. When approaching a railroad crossing with flashing lights, you must:
Correct answer: Stop and wait
Why: Flashing lights require a complete stop.
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Q16. What is the safest action if your brakes fail?
Correct answer: Pump the brakes and use parking brake
Why: Pumping brakes and using the parking brake can slow the vehicle.
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Q17. What does a blue rectangular sign usually indicate?
Correct answer: Motorist services
Why: Blue signs provide information about services.
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Q18. When turning left at an intersection, you should yield to:
Correct answer: Oncoming traffic
Why: Oncoming traffic has the right-of-way when turning left.
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Q19. What should you do if you encounter a flooded roadway?
Correct answer: Turn around
Why: Flooded roads may be deeper than they appear.
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Q20. What does a downward-sloping yellow sign warn of?
Correct answer: Hill ahead
Why: Slope symbols warn of steep grades ahead.
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Q21. When parking on a downhill grade without a curb, your front wheels should be turned:
Correct answer: Toward the edge of the road
Why: Turning wheels toward the edge helps prevent rolling.
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Q22. What does a flashing yellow arrow signal indicate?
Correct answer: Yield while turning
Why: Flashing yellow arrows allow turns after yielding.
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Q23. When approaching a pedestrian at an unmarked crosswalk, you must:
Correct answer: Yield
Why: Pedestrians have the right-of-way in crosswalks.
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Q24. What is the correct response to a tire blowout?
Correct answer: Grip the wheel and slow gradually
Why: Maintaining control and slowing gradually is safest.
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Q25. What does a solid yellow line on your side of the centerline mean?
Correct answer: Passing not allowed
Why: A solid yellow line prohibits passing.
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Q26. When must headlights be used during daylight hours?
Correct answer: During rain or low visibility
Why: Headlights are required when visibility is reduced.
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Q27. What should you do if an oncoming driver fails to dim headlights?
Correct answer: Look toward the right edge of the road
Why: Looking right reduces glare from bright headlights.
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Q28. What does an orange road sign indicate?
Correct answer: Construction or maintenance
Why: Orange signs warn of construction and work zones.
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Q29. When approaching a bicyclist, you should:
Correct answer: Leave safe space
Why: Drivers must give bicyclists adequate space.
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Q30. What does a round yellow sign with a black X usually warn of?
Correct answer: Railroad crossing
Why: Circular signs are used for railroad crossing warnings.
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Q31. What is the safest action if you feel drowsy while driving?
Correct answer: Stop and rest
Why: Stopping to rest is the safest option.
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Q32. What does a lane reduction sign warn drivers of?
Correct answer: Lane ending ahead
Why: Lane reduction signs warn that lanes merge or end.
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Q33. When approaching a curve, you should:
Correct answer: Slow before entering
Why: Slowing before the curve improves control.
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Q34. What does a broken white line indicate?
Correct answer: Lane change allowed
Why: Broken white lines allow lane changes when safe.
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Q35. What should you do if you miss a turn in a city?
Correct answer: Go around the block
Why: Going around the block is safer than backing up.
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Q36. What does a yellow sign with a bicycle symbol mean?
Correct answer: Bicycle crossing
Why: Bicycle symbols warn of possible crossings.
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Q37. When driving in snow, you should:
Correct answer: Reduce speed
Why: Reduced speed improves traction and control.
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Q38. What does a regulatory sign with a red circle and slash mean?
Correct answer: Prohibited action
Why: Red circles with slashes indicate prohibited actions.
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Q39. What must you do when approaching a yield sign at a roundabout?
Correct answer: Yield to circulating traffic
Why: Traffic already in the roundabout has the right-of-way.
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Q40. What is the purpose of rumble strips?
Correct answer: Alert inattentive drivers
Why: Rumble strips warn drivers through vibration and sound.
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Q41. When parking at night on a roadway, you should:
Correct answer: Use parking lights
Why: Parking lights make the vehicle visible without glare.
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Q42. What does a yellow sign with a truck on a slope warn of?
Correct answer: Steep downgrade
Why: Truck symbols on slopes warn of steep grades.
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Q43. When passing a large truck, you should:
Correct answer: Pass quickly and safely
Why: Passing efficiently reduces time in blind spots.
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Q44. What does a white sign with a red border indicate?
Correct answer: Regulation
Why: Red-bordered white signs are regulatory.
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Q45. When approaching an animal on the roadway, you should:
Correct answer: Brake firmly and stay in lane
Why: Braking and staying in lane reduces crash risk.
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Q46. What does a sign reading ‘Do Not Enter’ mean?
Correct answer: No entry permitted
Why: Do Not Enter signs prohibit entry.
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Q47. When driving through a work zone, fines may be:
Correct answer: Doubled
Why: Penalties are increased in work zones.
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Q48. What should you do when approaching a flashing yellow beacon over a sign?
Correct answer: Slow and be alert
Why: Flashing yellow beacons warn drivers to slow.
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Q49. What does a center lane with arrows pointing left in both directions mean?
Correct answer: Two-way left turn lane
Why: This lane is for left turns from either direction.
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Q50. What must you do before entering a roadway from an alley?
Correct answer: Yield to traffic
Why: Traffic already on the roadway has the right-of-way.