Iowa DOT Permit Practice Test 12
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. At night you are waiting to turn left and can see only the headlights of an approaching vehicle. Why should you allow a bigger margin?
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Answer D: Because lights alone make speed and distance hard to judge
With no other visual cues, two points of light give you very little information about how fast the vehicle is closing, so leave extra margin.
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2. Why should you make sure your turn signal has stopped flashing after a lane change?
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Answer A: A signal left flashing tells other drivers that you intend to move again
Other drivers act on your signals, so one that is left on gives them false information about what you are about to do.
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3. A driver is tailgating you. Why is it a bad idea to tap or stab the brakes to warn them?
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Answer C: Because it cuts the little space they have and can cause a crash
Brake checking removes the small margin the tailgater has left and can provoke a collision; add space in front of you instead and let them pass.
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4. Is it acceptable to drive far below the flow of traffic on an open highway?
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Answer B: No, driving too slowly can obstruct traffic and create a hazard
Traffic that is much slower than the surrounding flow forces other drivers into sudden braking and unnecessary passing maneuvers, and impeding traffic is itself a violation.
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5. Which steering method gives the most control when you must turn the wheel a long way at low speed?
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Answer C: Hand over hand, feeding the wheel from one hand to the other
Hand over hand keeps both hands on the wheel through a large turn, so you never lose the ability to correct quickly.
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6. Where is this sign installed in relation to the hazard it announces?
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Answer A: Far enough before the hazard that a driver can slow down and stop short of it
This is an advance warning sign, placed on the approach so a driver has time to react before reaching a crossing that a curve or a crest may be hiding.
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7. Snow has covered the pavement markings on a two-lane road. How should a driver judge lane position?
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Answer B: By the tracks of other traffic and the roadside features
With the markings hidden, ruts left by earlier traffic, signs, poles and the line of the shoulder are the best clues to where the lane runs.
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8. It is dusk and a jogger in dark clothing is running along the edge of the road. What should you do?
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Answer D: Slow down and scan the edges of the road
Dusk is the hardest light for spotting people, and dark clothing removes most of your warning, so lower speed and a careful scan of the roadsides are the answer.
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9. What are front fog lights for?
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Answer D: Adding a low, wide beam close to the car when visibility is poor
Fog lights throw a low, wide beam under the fog, which is why they are mounted low and are used only in poor visibility.
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10. You have a green arrow to turn left. What still applies?
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Answer D: You must yield to any pedestrian or vehicle still inside the intersection
A green arrow protects your turn from conflicting traffic, but you must still let anyone already in the intersection get clear before you move.
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11. You are backing a trailer and want its rear to move to the left. Which way should you turn the steering wheel?
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Answer A: Move the bottom of the wheel to the left, which turns the top to the right
A trailer moves opposite to the tow vehicle's steering when backing. Holding the wheel at the bottom and moving your hand in the direction you want the trailer to go makes this easier.
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12. You are on a city street with two lanes in your direction, cars parked along the curb and driveways every few yards. Which lane is usually safer?
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Answer B: The lane farther from the curb, away from opening doors and vehicles pulling out
Most of the hazards on such a street come from the curb side, so the inside lane gives you more space and more time to react.
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13. A pedestrian signal displays a steady walking person symbol. What does it mean for a pedestrian at that corner?
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Answer B: The pedestrian may start crossing in the direction of the signal
The steady walking person permits a pedestrian to begin the crossing, while still yielding to vehicles already lawfully in the intersection.
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14. How should you use your mirrors while another vehicle overtakes you on a multilane road?
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Answer C: Follow it from the inside mirror to the side mirror and then to your own view
Handing the vehicle from one mirror to the next keeps it in sight through the blind spot instead of losing it there.
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15. Why is parking too close to a street corner prohibited?
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Answer D: Because it hides approaching traffic and pedestrians
A vehicle parked at a corner blocks the view that both drivers and pedestrians need before entering the intersection.
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16. You are passing a large truck on an open highway in a strong crosswind. What should you expect?
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Answer A: A push toward the truck, then a push the other way as you clear it
The truck shelters you as you go by and then releases you into the full gust, so the load on the steering changes twice during the pass.
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17. How long does a parallel parking space need to be for the car you are driving?
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Answer D: About five or six feet longer than your vehicle
A few extra feet at each end give you the room to swing in and to straighten up without touching the vehicles in front or behind.
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18. Which of these is never a legal place to park?
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Answer C: In a crosswalk, on a sidewalk or within an intersection
Crosswalks, sidewalks and intersections must stay clear so that pedestrians can cross and drivers can see approaching traffic.
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19. A police officer is directing traffic at an intersection and waves you through a red light. What should you do?
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Answer C: Follow the officer, whose directions come before signs and signals
Directions given by a police officer or an authorized flagger override signs, signals and pavement markings.
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20. The school bus stop ahead sign is installed where
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Answer C: a school bus stop cannot be seen from far enough away by approaching drivers
This school warning sign is used in advance of a bus stop that lacks adequate sight distance and cannot be relocated, so drivers are warned before the stopped bus comes into view.
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21. At an intersection the signal flashes red toward you and flashes yellow toward the cross street. Who must yield?
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Answer D: You must, because the flashing red faces your road
A flashing red means stop and yield like a stop sign, while a flashing yellow lets the other road proceed with caution.
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22. Heavy trucks have worn deep ruts into a highway lane and rain has filled them. What is the danger?
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Answer D: Water collects in them, so the tires can lose contact with the road
Ruts hold standing water long after the rest of the lane has drained, which makes them the most likely place to start hydroplaning.
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23. Where is the best place in the car for a child safety seat?
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Answer A: In the rear seat, secured either with the belt or with the lower anchors
The rear seat is furthest from most impacts and from the front airbags, and the seat must be locked in with the belt or the anchors.
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24. Why is heavy braking a poor idea while two wheels are still on a soft shoulder?
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Answer B: The two sides have different grip, so the vehicle can pull sharply
With one pair of wheels on pavement and the other on loose material, hard braking slows one side more than the other and swings the vehicle around.
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25. You have parked a manual transmission car facing downhill. Which gear should you leave it in?
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Answer D: Reverse, along with the parking brake set firmly
Facing downhill the car would roll forward, so reverse gear opposes that movement while the parking brake and turned wheels back it up.