Iowa DOT Permit Practice Test 51
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. What is a microsleep?
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Answer D: A few seconds of sleep, sometimes with the eyes open
A microsleep is an involuntary lapse of a few seconds during which the driver is asleep and the vehicle travels blind, often without the driver knowing.
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2. On a two-way street, where and how should you park at the curb?
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Answer C: On the right side, facing the way traffic moves
On a two-way street you must park on the right, headed in the direction of travel; parking facing traffic is prohibited.
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3. How much should you normally reduce your speed on a road covered with packed snow compared with dry conditions?
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Answer C: By about half
Packed snow roughly doubles the distance needed to stop, so a common guideline is to cut speed by about half. On ice, slow to a crawl.
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4. What should you check on the hitch before towing a trailer?
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Answer B: That the coupler is locked and the safety chains are crossed underneath
The coupler must be latched and pinned, and the chains crossed under the tongue so they cradle it if the coupling lets go.
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5. You are towing a loaded trailer for the first time. How should you drive?
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Answer A: Slow earlier and keep a longer following gap
A trailer adds weight and length, so stopping takes longer and every maneuver needs more room and more warning.
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6. The low sun is directly ahead and glare makes it hard to see. What should you do?
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Answer C: Slow down, use the sun visor or sunglasses, and increase following distance
Sun glare can hide pedestrians, brake lights and signals. Reducing speed and adding space gives you time to react to what you cannot yet see.
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7. A lane is marked with a large white bicycle symbol and chevrons, but there is no separate bicycle lane. What does it mean?
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Answer A: Bicyclists may use the whole lane, so follow or pass with care
A shared lane marking shows that bicyclists and drivers use the same lane and positions riders away from parked car doors, so passing means changing lanes.
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8. How do worn tires and worn brakes affect your ability to stop?
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Answer C: They lengthen the stopping distance, especially on a wet road
Worn tread cannot clear water and worn brakes cannot produce full force, so both stretch the distance needed to stop.
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9. What additional penalty does Iowa allow when a listed moving violation causes another person's death?
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Answer A: A fine of one thousand dollars or a suspension of up to one hundred eighty days
Iowa Code section 321.482A allows a fine of one thousand dollars or a suspension of driving privileges for not more than one hundred eighty days, or both, when the violation causes death.
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10. You are the first to arrive at a crash on a rural road. What should you do first?
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Answer C: Park well clear of the scene, put on your hazard lights and call for help
Getting trained help on the way and keeping the scene visible does more good than anything an untrained bystander can do.
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11. How does a lap and shoulder belt protect you in a crash?
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Answer B: It holds you to the seat and spreads the force over the strong bones
The belt keeps you with the vehicle as it slows and puts the load on the hips and the chest rather than on soft tissue.
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12. About how much alcohol can the body eliminate per hour?
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Answer A: About one standard drink
The liver removes alcohol at a nearly fixed rate of roughly one standard drink per hour. Drinking faster than that raises the blood alcohol level, and nothing speeds the process.
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13. Children are playing close to the edge of a residential street. What is the right speed choice?
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Answer D: Well below the limit, slow enough to stop for a sudden dash
Children can step out without warning, so the safe speed is the one that lets you stop within the distance you can see to be clear.
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14. You are waiting to turn left and an oncoming vehicle stopped in the near lane to turn left blocks your view of the far lane. What should you do?
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Answer A: Wait where you are until you can see that the far lane is completely clear
The lane you cannot see is where the crash comes from, so you hold your position until the view opens up.
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15. A yellow diamond showing the silhouette of a deer warns that
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Answer D: large animals may cross the road in that area
The sign marks a stretch where animals are known to cross, so drivers should reduce speed and scan both roadsides, especially around dawn and dusk.
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16. You are about to pull out of a driveway when someone on the sidewalk is walking toward it. What should you do?
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Answer D: Wait, because traffic on the sidewalk has the right-of-way
A vehicle entering the roadway from a driveway yields to people on the sidewalk as well as to traffic on the street.
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17. How long should a glance at a mirror or an instrument take?
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Answer A: A brief glance of about a second, returning your eyes to the road at once
Checks should be quick flicks of the eyes. At highway speed, a few seconds with your eyes off the road covers a distance long enough for a hazard to appear.
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18. You are about to make a three-point turn on a narrow two-way street. What is the first step?
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Answer B: Pull close to the right edge, signal left and check traffic both ways
A three-point turn starts from a stop at the right edge with a left signal, and you only move once you have checked that both directions are clear.
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19. Small green signs with white numerals posted at regular intervals along a highway are used to
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Answer B: show distance along the route and give a reference point for reporting a location
Reference location signs, commonly called mileposts, carry white numerals on green and let a driver describe exactly where a breakdown or crash has occurred.
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20. Your right-turn lane shows a green arrow while the through lanes face a red ball. What does that mean?
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Answer C: Only the right turn is allowed, and it is protected while the arrow lasts
A green arrow gives a protected movement in that direction only; the red ball still stops the through traffic in the other lanes.
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21. A school crossing guard has returned to the curb but two children are still walking across the road. When may you go?
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Answer C: Only after the children have reached the far sidewalk
The guard leaving the road does not end your duty; you stay stopped until every child is clear of the roadway.
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22. How long is the Iowa revocation for a first drag racing conviction that caused no personal injury or property damage?
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Answer B: Six months
Iowa Code section 321.212 requires the department to revoke a license for six months for a first drag racing offense where the violation caused no personal injury or damage to property.
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23. What is the usual result of driving well above the flow of traffic on a typical trip?
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Answer B: Very little time saved, with much greater risk
Signals, traffic and short distances swallow the theoretical gain, while crash risk and crash severity both climb sharply with speed.
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24. What will the driver have to do at the point this sign refers to?
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Answer C: Slow down and let conflicting traffic go first, stopping if that is what it takes
Further along, the driver has to let conflicting traffic and pedestrians go first, reducing speed and stopping whenever that is necessary to avoid interfering with them.
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25. An overhead lane signal shows a flashing yellow X above your lane. What does it mean?
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Answer D: The lane may be used only for a left turn
A flashing yellow X marks a lane that may be used only to make a left turn; a steady yellow X is the one that warns you to leave the lane.