Iowa DOT Permit Practice Test 4: 50 Questions
Practice Test 4 has 50 multiple-choice questions on Iowa driving rules, including steady yellow arrow, hydroplaning response, solid white edge line and railroad gates lowered. 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 4 Covers
The questions in this test ask about:
- Steady Yellow Arrow
- Hydroplaning Response
- Solid White Edge Line
- Railroad Gates Lowered
- Sticking Accelerator
- Green Arrow with Red Light
- Blocked Intersection
- White Rectangular Sign
- Orange Signs
- Motorcycle Following Distance
- Parking Downhill with Curb
- Flooded Roadway
- Steep Grade Truck Warning Sign
- Passing Large Trucks
- Regulatory Sign Red Circle/Slash
- Flashing Yellow Arrow
- Drowsy Driving
- Wet Roads
- Shared Center Turn Lane
Try 5 Questions from This Test
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When a traffic signal shows a steady yellow arrow, it means:
Show answer
A. The protected turn is ending
A steady yellow arrow warns the protected turn is ending.
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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?
Show answer
B. Your car could hydroplane, so slow down
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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What does a solid white line along the right edge of the road indicate?
Show answer
A. Edge of the roadway
A solid white edge line marks the roadway boundary.
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When approaching a railroad crossing with gates lowered, you must:
Show answer
C. Stop and remain stopped
Lowered gates require drivers to stop and wait.
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What does a green arrow displayed with a red traffic light allow?
Show answer
A. Turn in the arrow’s direction
A green arrow allows movement in the arrow’s direction.
Complete Study Guide: All 50 Questions with Answers
Every question in Practice Test 4, with the correct answer and an explanation for each.
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Q1. What does a lane marked with a red X signal mean?
Correct answer: Lane is closed
Why: A red X over a lane means you must not use that lane.
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Q2. When a traffic signal shows a steady yellow arrow, it means:
Correct answer: The protected turn is ending
Why: A steady yellow arrow warns the protected turn is ending.
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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 solid white line along the right edge of the road indicate?
Correct answer: Edge of the roadway
Why: A solid white edge line marks the roadway boundary.
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Q5. When approaching a railroad crossing with gates lowered, you must:
Correct answer: Stop and remain stopped
Why: Lowered gates require drivers to stop and wait.
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Q6. What should you do if your vehicle’s accelerator sticks?
Correct answer: Shift to neutral and brake
Why: Shifting to neutral allows the vehicle to slow safely.
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Q7. What does a yellow pennant-shaped sign on the left side of the road indicate?
Correct answer: No passing zone
Why: Pennant-shaped signs mark the start of a no-passing zone.
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Q8. When driving on ice or snow, you should:
Correct answer: Reduce speed and increase following distance
Why: Lower speeds and more distance improve control.
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Q9. What does a green arrow displayed with a red traffic light allow?
Correct answer: Turn in the arrow’s direction
Why: A green arrow allows movement in the arrow’s direction.
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Q10. When approaching an intersection where traffic is backed up, you should:
Correct answer: Stop until the intersection is clear
Why: You must not block an intersection.
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Q11. What does a white rectangular sign with black lettering usually indicate?
Correct answer: Regulation
Why: White rectangular signs display traffic laws and rules.
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Q12. What is the correct response if your right wheels drop off the pavement?
Correct answer: Slow down and ease back onto the road
Why: Gradually returning helps prevent loss of control.
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Q13. What does an orange sign warn drivers about?
Correct answer: Construction or maintenance
Why: Orange signs are used in work zones.
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Q14. When approaching a pedestrian at an unmarked crosswalk, you must:
Correct answer: Yield the right-of-way
Why: Pedestrians have the right-of-way at crosswalks.
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Q15. What does a broken white line between lanes mean?
Correct answer: Lane changes allowed
Why: Broken white lines allow lane changes when safe.
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Q16. When parking downhill with a curb, your front wheels should be turned:
Correct answer: Toward the curb
Why: Turning toward the curb helps prevent rolling.
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Q17. What should you do if you encounter a flooded roadway?
Correct answer: Turn around
Why: Flooded roads can be deeper and dangerous.
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Q18. What does a yellow diamond sign with a truck symbol on a slope warn of?
Correct answer: Steep downgrade
Why: This sign warns of steep grades ahead.
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Q19. 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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Q20. What does a flashing yellow arrow indicate?
Correct answer: Yield while turning
Why: A flashing yellow arrow allows turning after yielding.
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Q21. What is the safest action if your brakes begin to fail?
Correct answer: Shift to neutral and use parking brake
Why: Using neutral and the parking brake helps slow the vehicle.
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Q22. What does a green rectangular sign typically provide?
Correct answer: Guidance and directions
Why: Green signs give destination and direction information.
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Q23. 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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Q24. What does a regulatory sign with a red circle and slash mean?
Correct answer: Prohibited action
Why: A red circle with a slash shows an action is not allowed.
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Q25. When approaching a curve, the safest action is to:
Correct answer: Slow before entering the curve
Why: Slowing before the curve improves vehicle control.
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Q26. What does a center lane with arrows pointing left in both directions indicate?
Correct answer: Two-way left-turn lane
Why: This lane is used only for left turns.
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Q27. When should high-beam headlights be dimmed for oncoming traffic?
Correct answer: Within 500 feet
Why: High beams must be dimmed within 500 feet.
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Q28. What does a yellow sign with a bicycle symbol indicate?
Correct answer: Bicycle crossing
Why: This sign warns of bicycle crossings.
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Q29. What should you do if you feel drowsy while driving?
Correct answer: Stop and rest
Why: Stopping to rest is the safest option.
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Q30. What does a white arrow painted on a lane mean?
Correct answer: Permitted lane movement
Why: Lane arrows show allowed movements.
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Q31. When approaching a work zone, drivers should:
Correct answer: Slow down and be alert
Why: Work zones require extra caution.
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Q32. What does a round yellow sign with an X and letters warn of?
Correct answer: Railroad crossing
Why: This sign warns of a railroad crossing.
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Q33. When entering traffic from an alley or driveway, you must:
Correct answer: Yield to roadway traffic
Why: Traffic on the roadway has the right-of-way.
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Q34. What should you do when an animal enters your lane?
Correct answer: Brake firmly and stay in lane
Why: Staying in your lane reduces crash risk.
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Q35. 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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Q36. 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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Q37. When approaching a school zone, drivers should:
Correct answer: Slow down and watch for children
Why: School zones require caution for children.
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Q38. What does a white sign with red lettering usually indicate?
Correct answer: Regulation
Why: Red lettering on white signs shows regulations.
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Q39. When making a left turn, you must yield to:
Correct answer: Oncoming traffic
Why: Oncoming traffic has the right-of-way.
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Q40. What does a sign reading 'Do Not Enter' indicate?
Correct answer: Entry prohibited
Why: This sign means vehicles must not enter.
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Q41. When visibility is reduced by fog or rain, you should:
Correct answer: Use headlights
Why: Headlights help others see your vehicle.
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Q42. 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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Q43. What should you do when approaching a flashing yellow beacon over a warning sign?
Correct answer: Slow and be alert
Why: Flashing yellow beacons warn drivers to use caution.
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Q44. What does a blue sign usually indicate?
Correct answer: Motorist services
Why: Blue signs provide service information.
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Q45. When driving on wet roads, you should:
Correct answer: Increase following distance
Why: Extra distance allows more stopping time.
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Q46. What does a no U-turn sign mean?
Correct answer: U-turns prohibited
Why: This sign prohibits U-turns.
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Q47. When approaching a stop sign without a stop line, you must:
Correct answer: Stop before the intersection
Why: Drivers must stop before entering the intersection.
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Q48. What does a yellow warning sign with a curved arrow indicate?
Correct answer: Curve ahead
Why: Curved arrows warn of roadway curves ahead.
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Q49. When driving near large trucks, you should avoid:
Correct answer: Their blind spots
Why: Large trucks have large blind spots.
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Q50. What should you do when approaching a yield sign at a roundabout?
Correct answer: Yield to traffic in the roundabout
Why: Traffic already in the roundabout has the right-of-way.