Iowa DOT Permit Practice Test 21
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. Two vehicles reach a four-way stop at the same moment from adjacent roads. Who should go first?
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Answer A: The driver on the right
When two drivers stop at a four-way stop at the same time, the driver on the left yields to the driver on the right.
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2. What should a driver do first after passing this sign?
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Answer A: Move into the right-hand lane and stay there
Traffic returns to two-way operation, so the driver keeps to the right of the centerline and stops treating the left side as available.
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3. Another driver takes a right of way that was legally yours. What should you do?
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Answer A: Give way to the other driver and avoid the crash, whatever the law says
Right of way is something you give, not something you take, and being in the right is no protection in a collision.
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4. You cannot avoid a wide puddle that covers only the right half of your lane. What should you expect?
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Answer D: The water can tug the vehicle toward that side, so slow before it and grip the wheel
Water dragging on the tires of one side only pulls the vehicle that way. Reduce speed before you reach it and hold the wheel firmly.
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5. This sign is still standing late at night, and nobody is working. What should the driver assume?
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Answer B: The layout may still be altered, so the same care and reduced speed apply
Narrowed lanes, shifted alignments, dropped pavement edges and parked equipment remain overnight, so the hazard does not end when the crew goes home.
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6. When should you move into the lane you need for a turn?
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Answer D: Well before the intersection, as soon as you know your route
Getting into the correct lane early lets other drivers read your intentions and keeps you from making a sudden lane change at the corner.
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7. A lane control sign over one lane shows both a straight arrow and a left arrow. What does it tell drivers in that lane?
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Answer A: Either movement may be made from that lane
An optional movement lane control sign lists every movement permitted from the lane, so a driver may choose any arrow shown.
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8. The only person offering you a ride home has been drinking. What should you do?
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Answer B: Do not get in; find another way home
A passenger in an impaired driver's vehicle shares all of the risk and can do nothing about it from the seat, so the only safe answer is another ride.
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9. Why does safety guidance say a child should ride in the back seat rather than in front of an active passenger airbag?
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Answer D: Because the airbag inflates with enough force to injure a small child badly
Airbags deploy at very high speed and are sized for adults, so a child seated close to one can be badly hurt by the bag itself, which is why the back seat is recommended for children.
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10. Why should cruise control be switched off on wet, snowy or icy roads?
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Answer B: It may keep feeding power to a wheel that has started to slip, and cancelling it costs you time
Cruise control holds a set speed regardless of grip, so it can add power just as a tire loses traction, and the extra step of cancelling it delays your response.
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11. Why should you set the parking brake even when an automatic transmission is in Park?
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Answer B: Because it takes the strain off the transmission and holds the vehicle
The parking pawl is a small part carrying the whole vehicle; the parking brake shares that load and holds the vehicle if the pawl fails.
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12. Cones and drums mark a shifted lane through a work zone. What should you do?
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Answer A: Follow the path that they mark and stay inside it
Channelizing devices define the temporary travel path, and the space on the other side of them belongs to the workers.
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13. Is it acceptable to leave your vehicle across the entrance of an alley for a short time?
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Answer A: No, the entrance must stay clear at all times
Blocking an alley entrance traps the vehicles inside and can keep emergency services out, so it is prohibited however brief the stop.
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14. Something rolls off the seat onto the floor while you are driving. What should you do?
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Answer C: Leave it where it is and pick it up after you stop somewhere safe
Reaching for an object pulls your eyes and your body away from the controls at exactly the wrong moment, and nothing on the floor is worth that risk.
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15. You are calling 911 to report a crash. Which information matters most?
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Answer C: The exact location, how many people are hurt and any hazard such as fire
Dispatchers need to know where to send help, how much help to send, and what dangers the crews will meet on arrival.
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16. The rear of your vehicle begins to slide sideways on a slippery surface. What is the correct correction?
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Answer C: Ease off the accelerator and steer in the direction you want the front of the vehicle to go
Looking and steering toward your intended path lines the front wheels up with the direction of travel, while sudden braking or a sharp opposite input usually makes the slide worse.
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17. You get into a heated argument with a passenger while driving. What should you do?
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Answer D: End the discussion or pull over to finish it
Anger narrows attention and encourages risk, and a conversation you cannot let go of is a passenger you should be parked to talk with.
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18. A deer suddenly steps onto the road ahead of you at night. What is the safest response?
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Answer C: Brake firmly and stay in your lane rather than swerving
Swerving at speed often leads to a rollover or a head-on crash that is far worse than hitting the animal. Brake hard, hold your lane and expect more deer to follow.
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19. A yellow pennant-shaped sign is posted on the left side of a two-lane road facing you. What is it telling you?
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Answer B: You are entering a no-passing zone and may not start a pass
The pennant is placed on the left so that it faces the driver who might pull out, and it marks the beginning of a no-passing zone.
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20. A driver reaching a stop sign is required to do what?
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Answer D: Come to a complete stop and then proceed only when it is safe
A stop sign requires a full stop before the stop line, crosswalk or intersection, after which the driver may go on once the way is clear.
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21. You are turning right from a one-way street onto a two-way street. Where should the turn end?
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Answer A: In the lane nearest the right curb of the street you are entering
A right turn starts and finishes as close to the right as practical, so you leave the one-way street from the right lane and arrive in the lane nearest the right curb.
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22. You park a manual transmission car facing uphill at a curb. What is the correct combination?
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Answer A: First gear, wheels turned away from the curb, parking brake set
Facing uphill the car would roll back, so first gear resists that, the wheels turned out let a tire catch the curb, and the parking brake holds it.
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23. How does Iowa treat a conviction for using an electronic device while driving, for licensing purposes?
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Answer B: As a moving violation
Iowa Code section 321.276 states that a violation of the electronic device section shall be considered a moving violation for purposes of chapter 321 and the rules adopted under it.
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24. How much additional supervised driving must an Iowa intermediate licensee log before receiving a full driver's license?
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Answer B: 10 hours, 2 of them after sunset and before sunrise
Iowa Code section 321.180B requires an affidavit showing ten hours of street or highway driving, two of them after sunset and before sunrise, before a full license is issued.
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25. You are driving on an open highway in a strong crosswind. What is the safest adjustment?
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Answer A: Reduce speed and keep a firm grip, expecting gusts on bridges and beside large vehicles
Gusts hit hardest in open gaps, on bridges and when passing high-sided vehicles, so a lower speed and a firm grip let you correct before you are pushed out of your lane.