Iowa DOT Permit Practice Test 20
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. Where should you be looking as you steer through a turn?
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Answer C: Toward the point on the new road where you want to end up
Drivers steer toward what they look at, so looking through the turn to where you want to go keeps the path smooth and accurate.
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2. The trailer you are towing begins to sway from side to side at highway speed. What should you do?
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Answer D: Ease off the accelerator, hold the wheel steady and let the speed drop
Sway grows with speed and with sudden inputs. Reducing speed gently while keeping the steering steady lets the trailer settle behind you.
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3. A driver's blood alcohol concentration is below the legal limit, but the driver is visibly impaired. Can the driver be arrested?
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Answer C: Yes, driving while impaired by alcohol is an offense at any concentration
The per se figure, 0.08 percent in most states and 0.05 percent in Utah, is the level at which impairment is presumed. Impairment shown by driving behavior and field tests is enough on its own, because alcohol affects skills well before that number.
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4. Yellow signs each showing one large black arrowhead, installed in a row along the outside of a curve, are
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Answer D: chevron alignment signs marking the change of direction of the curve
Chevron alignment signs are placed on the outside of a curve so that several are in view at once, letting the driver judge how sharply the road turns.
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5. You see smoke coming from under the hood while driving. What should you do?
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Answer D: Signal, pull well off the road, shut off the engine and move everyone away from the vehicle
Stopping and shutting off the engine cuts the fuel supply to a possible fire, and distance protects you if it spreads. Raising the hood can feed the fire a rush of air.
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6. You want to turn right from a lane marked for through traffic and right turns, and the driver behind you wants to go straight. What should you do?
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Answer C: Signal, stay in the lane and make the turn when it is safe
A shared lane is the correct place to turn right from, so signal early and turn from the lane; the driver behind must wait or use another lane.
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7. You reach a four-way stop after another driver has already stopped there. What should you do?
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Answer D: Let the driver who stopped first proceed before you go
At a four-way stop the vehicles proceed in the order they arrived, so a driver who stopped before you goes first.
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8. You have just merged onto a freeway from an entrance ramp. What should you do next?
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Answer C: Settle into the right lane and build up speed before changing lanes
Crossing lanes while you are still below the speed of the traffic forces other drivers to brake, so the speed comes first and the lane change second.
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9. In near freezing weather, which part of an otherwise clear road is most likely to still be icy?
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Answer D: A shaded dip under trees or beside a rock cut
Sun clears most of the road, but shaded hollows never warm up and can hold ice long after the rest of the pavement is dry.
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10. A left-turn bay opens ahead of the intersection with a solid white line beside it. Where should you enter the bay?
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Answer C: At the opening before the solid line begins
The solid line marks where lane changes are no longer intended, so you move into the turn bay at its opening rather than cutting across the line later.
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11. You feel drowsy, so you open a window and turn the radio up. What does that achieve?
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Answer B: Very little, because the drowsiness comes back
Cold air and loud music are not sleep, so the alerting effect lasts a minute or two and the driver is soon just as sleepy and closer to a lapse.
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12. You are waiting to turn left at a solid green light with no green arrow. Oncoming traffic is approaching. What should you do?
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Answer A: Yield to the oncoming traffic and turn only when there is a safe gap
A solid green light permits the left turn but does not protect it, so you must yield to oncoming vehicles and to pedestrians before turning.
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13. What is true about an airbag once it has inflated in a crash?
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Answer B: It must be replaced by a technician before the car is driven any further
An airbag is a single use device, and the module and often the belts must be replaced before the vehicle protects anyone again.
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14. May you use a relative's accessible parking placard to park in a marked accessible space?
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Answer D: No, only when the placard holder is being transported in the vehicle
A placard belongs to the person, not to the car, so it is valid only when that person is being transported; using it otherwise takes a space from someone who needs it.
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15. There is a driveway and a side street between you and the corner where you will turn right. When should you signal?
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Answer C: After passing the openings, so nobody pulls out in front of you
A signal switched on before an opening tells drivers waiting there that you are turning in, and they may pull out into your path.
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16. A deer has just crossed in front of you on a stretch signed for animal crossings. What is the best assumption?
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Answer B: More animals are likely to follow the first one
Deer travel in groups, so one animal crossing usually means others are about to follow, and a driver should slow and keep scanning both shoulders.
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17. A curb sign reads 2 Hour Parking, 8 AM to 6 PM, Monday to Saturday. When may you stay longer than two hours?
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Answer A: Outside those hours and on Sundays
A time limit applies only during the days and hours printed on the sign; outside them the ordinary parking rules apply.
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18. How often should the spare tire be checked?
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Answer C: Regularly, because a spare loses pressure while it sits unused
Spares lose air slowly over months, and a flat spare is useless at the moment you need it.
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19. You are the first driver on a road just after a storm. What should you plan for?
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Answer B: Branches, mud and other debris hidden around the next bend
Storm debris lands where nobody has cleared it yet, often just beyond a curve or a crest, so reduce speed and look much further ahead.
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20. On an Iowa secondary road that is not surfaced with concrete or asphalt, what is the maximum lawful speed between sunset and sunrise?
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Answer C: 50 miles per hour
Iowa Code section 321.285 allows no more than fifty-five miles per hour between sunrise and sunset and no more than fifty miles per hour between sunset and sunrise on unpaved secondary roads.
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21. You are making a legal U-turn at an intersection. Who has the right of way?
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Answer C: Everyone else, until your turn is complete
A U-turn crosses several paths at once, so you yield to oncoming vehicles, to crossing traffic and to pedestrians before starting it.
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22. What is a driver being warned about here?
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Answer B: The pavement ahead carries vehicles traveling in the opposite direction
Beyond this point vehicles come the other way on the same pavement, which commonly happens where a one-way section or a separated stretch comes to an end.
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23. A driver stopped at a red signal wants to turn right and this sign is posted at the corner. What is permitted?
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Answer A: Nothing: the turn is barred whether the signal is red or green
The restriction works independently of the signal, so the usual permission to turn right after stopping at a red light does not exist where this sign is posted.
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24. As a general rule, how far should you travel along a center two-way left-turn lane before you turn?
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Answer C: Only a short distance, just enough to slow down and wait for a gap
The center lane is for making or preparing a left turn, so you enter it only shortly before the turn and never travel along it as a through lane; several states set a specific limit such as 200 or 300 feet.
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25. Two solid white lines are painted between your lane and the lane beside it. What do they mean?
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Answer D: Crossing from one lane to the other is prohibited
Double solid white lines separate lanes of traffic going the same way and may not be crossed.