Iowa DOT Permit Practice Test 42
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. Where is a U-turn generally the most reasonable choice?
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Answer B: At an intersection where it is permitted and you can see well both ways
A U-turn needs a legal place and a long clear view in both directions, which is why a permitted intersection with open sight lines is the usual choice.
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2. How long does Iowa revoke the license of a driver who refuses chemical testing and has no previous revocation?
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Answer C: One year
Iowa Code section 321J.9 sets the revocation for refusal at one year where the person has no previous revocation under the chapter, and two years where a previous revocation exists.
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3. An Iowa permit holder applying for an intermediate license must have been accident and violation free for how long immediately before applying?
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Answer C: Six months
Iowa Code section 321.180B requires the applicant for an intermediate license to have been accident and violation free continuously for the six-month period immediately preceding the application.
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4. Your car has side curtain airbags. What should you avoid doing?
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Answer B: Resting your head against the window or the door pillar
A side airbag deploys from the pillar or roof rail, so a head leaning against that area is directly in its path.
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5. How should a lap and shoulder belt be positioned?
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Answer A: Lap belt low across the hips and shoulder belt across the chest and collarbone
The lap belt must bear against the strong pelvic bones rather than soft organs, and the shoulder belt must cross the rib cage and collarbone so crash forces spread over the skeleton.
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6. After an Iowa officer removes the plates for lack of proof of coverage, how long may the vehicle still be driven, and for what purpose?
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Answer B: Up to forty-eight hours, solely to remove it from the highways of the state
Iowa Code section 321.20B allows the vehicle to be driven for up to forty-eight hours after the citation solely to remove it from the highways, with the citation kept in the vehicle as proof.
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7. Which trailer lights must work before you drive away?
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Answer B: The tail lights, brake lights and turn signals
The trailer hides the vehicle lights from anyone behind, so its own tail, brake and turn signals have to work before you move.
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8. Where should you be looking as you back into a parallel parking space?
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Answer B: Over your shoulder through the rear window, glancing all around
Mirrors and cameras leave blind areas, so turn and look through the rear window while checking the front of your car and both sides as it swings.
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9. Your vehicle stalls on railroad tracks and you see a train approaching. What should you do?
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Answer D: Get everyone out and run toward the train at an angle away from the tracks
Leave the vehicle at once. Running toward the oncoming train and away from the tracks keeps you clear of the wreckage, which is thrown forward in the direction the train is moving.
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10. How does heavy cargo on a roof rack change the way a vehicle handles?
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Answer D: It raises the center of gravity, so the vehicle tips more in turns and needs gentler steering
Weight carried high makes the vehicle lean more and roll over more easily, and extra weight lengthens stopping distance. Drive slower and steer smoothly with a loaded roof.
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11. The stability control warning light flashes while you are driving through a curve. What does it mean?
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Answer A: The system is actively working to keep the vehicle under control, so slow down
A flashing stability control light means the system is braking individual wheels because you are near the limit of grip. Ease off and drive more gently.
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12. Why are motorcycles so often missed by other drivers?
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Answer C: Their narrow shape is easily hidden in traffic
A motorcycle presents a narrow outline that disappears behind pillars, mirrors and other vehicles, and it is harder to judge its speed and distance.
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13. You are approaching a yield sign on a ramp that joins a busy street. What does the sign require?
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Answer A: Slow down, be ready to stop, and let the other traffic go first
A yield sign means you must slow, be prepared to stop and give way to traffic on the road you are entering; a full stop is required only when traffic makes it necessary.
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14. You are stopped in traffic at a red light when an ambulance comes up behind you with its siren on. What is the correct action?
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Answer D: Stay put until you can move aside legally and safely
You must not run a red light or make an unsafe move to yield; wait, then pull to the side once the way ahead lets you do it safely.
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15. Must an Iowa driver stop for a stopped school bus traveling the opposite way on a highway with two or more lanes in each direction?
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Answer C: No, a driver meeting the bus on such a highway need not stop
Iowa Code section 321.372 provides that a driver on a highway with two or more lanes in each direction need not stop upon meeting a school bus traveling in the opposite direction, even when the bus is stopped.
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16. Your wiper blades smear the windshield instead of clearing it. What should you do?
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Answer C: Replace the blades, because smearing means that the rubber is worn
Worn or hardened rubber cannot wipe cleanly, and blades are cheap compared with driving without a clear view.
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17. A white diamond symbol is painted in a highway lane. What does it identify?
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Answer C: A lane reserved for high-occupancy vehicles
The diamond symbol marks a preferential lane, most often one reserved for vehicles carrying a minimum number of occupants.
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18. How does Iowa classify a first offense of operating while intoxicated?
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Answer A: A serious misdemeanor
Iowa Code section 321J.2 makes a first violation a serious misdemeanor, a second an aggravated misdemeanor, and a third or subsequent a class D felony.
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19. How should a head restraint be adjusted?
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Answer D: So the top is at least as high as the back of your head and close behind it
A restraint set at head height and close behind limits how far the head snaps backward in a rear impact, which is what reduces neck injury.
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20. What does Iowa require of a fourteen-year-old applying for a driver's license valid only for a motorized bicycle?
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Answer A: A vision test, a written examination on the rules of the road, and a moped education course
Iowa Code section 321.189 allows this license from age fourteen after a vision test or vision report and a written examination on the rules of the road, and adds an approved motorized bicycle education course for applicants under sixteen.
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21. On a two-lane road, a solid yellow line runs on your side of the center while a broken yellow line runs on the other side. What does this mean?
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Answer D: You may not pass, although oncoming drivers may
Passing restrictions are read from the line closest to your own lane, so a solid yellow line on your side creates a no-passing zone for you alone.
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22. You are parking facing downhill on a street with a curb. Which way should the front wheels point?
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Answer A: Toward the curb, so the vehicle would roll into it if it moved
Turning the wheels toward the curb when facing downhill means a vehicle that starts to roll is stopped by the curb instead of entering the traffic lane.
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23. How may a two-way left-turn lane never be used?
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Answer B: As a through travel lane or a passing lane
The lane exists only for turning movements, so traveling or passing along it puts you head-on with vehicles turning from the opposite direction.
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24. You are driving through a long curve on a road with two lanes in your direction. What is correct?
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Answer A: Stay within your own lane all the way through, adjusting speed before you enter
Wandering out of your lane in a curve puts you into the path of a vehicle you cannot see, and the slowing belongs before the curve rather than in it.
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25. How does braking distance change if you double your speed?
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Answer D: It grows much more than twice as long
Braking distance increases with the square of speed, so doubling speed roughly quadruples the distance needed to stop.