Iowa DOT Permit Practice Test 15
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. You are driving in the left lane at the posted speed limit and a line of vehicles has built up behind you. What should you do?
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Answer D: Move into a lane on your right when it is safe and let the traffic behind go by
Most states require traffic moving slower than the flow to keep right and reserve the left lane for passing, so a driver holding up a line of vehicles should move right when it is safe rather than block the lane.
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2. What is the best way to keep your phone from distracting you on a trip?
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Answer D: Silence it and stow it before you start
A phone you cannot hear and cannot reach cannot tempt you, which is far more reliable than deciding case by case while you drive.
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3. A yellow diamond shows an arrow bent into a series of reversing turns. What does it warn about?
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Answer A: Three or more changes of direction close together
The winding road sign replaces a string of separate curve signs where several bends follow one another with only short straights between them.
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4. Alcohol is classified as which kind of drug?
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Answer B: A depressant that slows the central nervous system
As a depressant, alcohol slows the brain and nervous system, which lengthens reaction time and dulls the coordination that driving depends on.
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5. A driver behind you on a two-lane road clearly wants to pass. Why should you not wave that driver past?
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Answer B: You cannot see the whole road ahead for them and they may rely on your signal
Waving another driver out invites them to trust your judgment of a road you cannot see well enough, and the decision to pass belongs to the driver making it.
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6. A marked accessible space is signed as van accessible. What is different about it?
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Answer B: It has a wider aisle for a ramp or a lift to come out
The extra width beside the space is there so a side ramp or lift can deploy and a wheelchair can get clear of the vehicle.
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7. Why is parking against the flow of traffic dangerous even when nobody complains?
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Answer D: Because you had to cross traffic to get there and must cross again to leave
Parking on the wrong side means driving against traffic at both ends of the stop, and your reflectors and lights face the wrong way while you are there.
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8. You are stopped at a stop sign on a two-way stop intersection and the cross street has no stop signs at all. What does that mean for you?
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Answer A: You yield to all cross traffic no matter how long that takes
At a two-way stop only your direction is controlled, so there is no taking turns; you wait for a gap big enough to enter safely.
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9. You are using the parking brake to slow a vehicle whose brakes have failed. How should you apply it?
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Answer D: Gradually, holding the release so you can let it off if the rear slides
The parking brake works on two wheels only, so applying it hard can lock them and spin the vehicle. Keep the release held so you can back it off instantly.
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10. An orange sign reads RIGHT LANE CLOSED AHEAD. What is the correct response?
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Answer A: Move left in good time and keep a steady pace
The sign is placed well before the taper so that drivers can merge smoothly rather than braking hard where the lane actually closes.
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11. A pedestrian steps off the curb in the middle of a block where there is no crosswalk at all. What is the legal position?
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Answer A: They must yield to you, but you must still avoid a crash
A pedestrian crossing away from a crosswalk yields to vehicles, yet every driver still has a duty to use care and avoid hitting a person.
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12. What additional fines does Iowa attach to a move over violation that injures or kills another person?
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Answer D: Five hundred dollars for injury and one thousand dollars for death
Iowa Code section 321.323A adds a fine of five hundred dollars where the violation causes bodily injury and one thousand dollars where it causes death, on top of the scheduled fine.
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13. You and an opposing driver reach a four-way stop at the same time and both of you are turning right. What should happen?
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Answer C: Both may turn at the same time into their own lanes
Two opposing right turns take drivers into different lanes without crossing, so both can proceed together once pedestrians are clear.
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14. You feel fine twenty minutes after your last drink. Why is that a poor guide to driving?
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Answer B: Your blood alcohol level can still be rising
Alcohol keeps being absorbed for some time after the last drink, so a driver who feels able at the door can be more impaired a few miles down the road.
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15. After a crash, what information should you exchange with the other driver?
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Answer B: Name, address, driver license, vehicle registration and insurance details
Identification, registration and insurance information are what the other party and the insurers need. Sensitive financial details are never required.
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16. On a narrow two-lane road a line of vehicles has built up behind you. What is the safe and courteous action?
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Answer D: Pull into a turnout or a safe wide spot and let them go by
A slow vehicle holding up a queue invites risky passing; using a turnout clears the road without anyone having to take a chance.
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17. You are traveling at 55 mph and see a vehicle ahead moving at about 15 mph. What is the hazard?
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Answer A: You reach it far sooner than you expect
At a 40 mph difference you cover the gap in a few seconds, which is why drivers strike slow vehicles they saw in plenty of time.
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18. You carry reflective warning triangles in your car. How should they be used after a breakdown?
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Answer B: Set out behind the vehicle, far enough back to warn traffic before it arrives
A warning device works only if drivers see it in time to react, so it is placed well back along the road they are traveling.
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19. You are on a one-way street with two marked lanes. May you pass a slower vehicle on the right?
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Answer A: Yes, using the right lane, provided that the move is safe and signaled
On a roadway with two or more marked lanes in your direction, moving into the free lane and going by is a normal lane change rather than an unlawful pass.
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20. When is a driver or rider most likely to need hand and arm signals instead of the vehicle turn signal lamps?
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Answer D: When the lamps have failed or cannot be seen because of glare or a load
Hand and arm signals replace or reinforce the lamps whenever the lamps do not work or cannot be seen clearly by other road users.
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21. What speed limit applies on an Iowa street or highway between an installed cattle guard and the point where the road dead ends?
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Answer D: 15 miles per hour
Iowa Code section 321.285 sets the speed limit at fifteen miles per hour between the point where a cattle guard is installed and the point where the street or highway terminates in a dead end.
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22. A barricade carries a sign reading ROAD CLOSED TO THROUGH TRAFFIC. What does it permit?
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Answer B: Local access for people whose destination is on that road
This closure keeps out drivers who are only passing through while still allowing residents and deliveries to reach addresses within the closed section.
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23. You are about to slow down sharply for a turn. Which check comes first?
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Answer A: A look in the mirror to see how close the traffic behind you is
Any hard slowing needs a mirror check first, because the driver behind is the one who has to react to it.
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24. How long does the Iowa DOT revoke a license after a plea or verdict of guilty to a third operating while intoxicated offense?
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Answer D: Six years
Iowa Code section 321J.4 requires the department to revoke the license for six years upon a plea or verdict of guilty of a third or subsequent violation of section 321J.2.
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25. How does marijuana affect a driver?
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Answer C: It slows reaction time and impairs judgment of time and distance
Marijuana impairs coordination, attention and the ability to judge speed and distance. Driving while impaired by it is illegal everywhere, even where its use is legal.