Iowa DOT Permit Practice Test 28
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. A regulatory message is normally carried on a sign whose shape is
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Answer A: a rectangle standing taller than it is wide
Regulatory signs that state a law, such as speed limits and turn restrictions, use a vertical rectangle with a black legend on a white background.
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2. An oncoming driver flashes their headlights while you are waiting to turn left. What should you do?
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Answer D: Judge the situation yourself, since the flash may mean something else
A flash is not a legal signal and may mean many things, so the decision to turn stays yours and must be based on what you can see.
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3. Why is passing another vehicle a bad idea in dense fog?
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Answer C: You cannot see far enough ahead to know the passing lane is clear
A pass needs a clear view of the road well beyond the vehicle you are overtaking, and fog takes exactly that away.
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4. A bicycle symbol topped by two chevrons is painted in the middle of a travel lane. What does that marking indicate?
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Answer D: Bicyclists share the lane with motor vehicles and may ride away from the curb
A shared lane marking shows drivers where bicyclists are likely to ride in a lane used by both bicycles and motor vehicles.
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5. At what tread depth should a tire be replaced?
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Answer A: When the tread is worn down to 2/32 of an inch
At that depth a tire loses grip quickly, especially on wet roads, and the built in wear bars or the penny test both show when the point has been reached.
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6. A sign with a yellow background and a black legend generally conveys
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Answer B: a general warning
Yellow is the background color used for general warning signs, so a yellow sign tells the driver to expect something ahead rather than to obey a rule.
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7. Do hazard lights make it legal to leave your vehicle in a no parking zone?
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Answer A: No, they warn other drivers but do not permit the parking
Hazard lights are a warning device, not a permit; the parking restriction applies whether they are flashing or not.
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8. An Iowa crash caused apparent property damage of 2,000 dollars and no law enforcement agency investigated it. How soon must the driver send a written report to the department?
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Answer D: Within seventy-two hours
Iowa Code section 321.266 requires a written report to the department within seventy-two hours when a crash causes injury, death, or apparent total property damage of one thousand five hundred dollars or more, unless a law enforcement agency investigated it.
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9. Warning signs such as stop ahead, yield ahead and signal ahead are installed mainly where
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Answer B: the traffic control device cannot be seen from far enough away
These advance warning signs are used when a crest, curve or obstruction keeps the stop sign, yield sign or signal from coming into view in time for a driver to react.
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10. When are you expected to switch from high beams to low beams?
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Answer D: When a vehicle approaches from ahead or you come up behind another vehicle
High beams blind other drivers, both those coming toward you and those you follow through their mirrors. Dim them whenever another vehicle is within range.
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11. Two lanes at the corner are marked for right turns. What does that require of you?
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Answer A: Keep your own lane through the turn and into the matching new lane
Dual turn lanes work only if each vehicle stays in its own lane all the way round and finishes in the corresponding lane of the new street.
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12. You are behind a snow plow working on a highway. What is the correct way to drive?
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Answer C: Stay well back and do not try to pass it
A plow throws snow, runs wider than its body and works on the poor surface ahead of it, so the cleared road behind it is the safest place to be.
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13. The signal ahead has a sign prohibiting left turns, and your route needs a left. What should you do?
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Answer D: Go straight on and find a legal place to turn and come back
A turn prohibition applies to every driver, so you continue through and reach your route by another legal turn.
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14. You are about to change lanes to the left when you notice a vehicle already overtaking you in that lane. What should you do?
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Answer A: Hold your lane and your speed, and change only after that vehicle has gone by
A signal asks for space but does not create it, and the overtaking driver has nowhere to go if you move across.
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15. May you park in front of a public or private driveway?
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Answer A: No, blocking a driveway is prohibited even for a short time
Parking in front of a driveway blocks the property owner from entering or leaving, and the prohibition does not depend on how long you stay.
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16. A large panel mounted on a trailer at the roadside displays a flashing arrow pointing left. What does it tell you?
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Answer B: Move into the lane to your left
An arrow panel directs traffic out of a closed lane, so the arrow shows the direction you must move rather than the shape of the road ahead.
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17. You are turning right where a paved trail crosses the road just past the corner. What should you look for?
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Answer B: Cyclists and walkers arriving from either direction on the trail
A shared use path carries two-way traffic on foot and on bicycles, so scan both directions along the trail before crossing it.
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18. What counts as a complete stop at a stop sign?
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Answer C: The wheels stop turning before the stop line
A legal stop means the vehicle is no longer moving, made at the stop line or before entering the crosswalk or intersection.
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19. How long may an Iowa vehicle impounded for lack of insurance go unclaimed before it may be treated as abandoned?
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Answer D: Thirty days
Iowa Code section 321.20B provides that a motor vehicle impounded under that section and not claimed within thirty days after impoundment may be treated as an abandoned vehicle.
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20. In a vehicle with automatic transmission, which foot should operate the brake and accelerator?
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Answer D: The right foot for both pedals
Using only the right foot prevents pressing both pedals at once and keeps the response the same in every vehicle you drive. The left foot rests on the floor or the footrest.
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21. Which surfaces usually offer less grip than the pavement around them when wet?
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Answer B: Painted markings, metal plates and bridge decks
Paint, steel and bridge decks all shed grip when wet or cold, so brake before you reach them rather than on top of them.
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22. What must a driver be ready for beyond this sign?
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Answer C: Vehicles approaching from the opposite direction in the next lane over
The separation between the two directions runs out, so from that point oncoming vehicles share the same pavement and the driver has to keep right.
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23. What is the correct first step when parallel parking behind an empty space?
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Answer D: Signal, pull up alongside the vehicle in front of the space, then back slowly into it
Parallel parking is done in reverse from a position alongside the vehicle ahead of the space, because backing in lets the rear wheels guide the vehicle to the curb.
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24. What do zero tolerance laws mean for a driver who is under 21?
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Answer B: They commit a violation at an alcohol level far below the adult limit
Drivers under 21 may not legally drink, so every state sets a limit far below the adult one and treats even a trace reading as a violation. The exact figure is set by each state, and the penalty usually includes losing the license.
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25. At which location is this sign normally installed?
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Answer D: Facing traffic that could turn into a one-way roadway or ramp against the flow
It is posted where a driver could otherwise enter a ramp or a one-way roadway from the wrong end, so it faces exactly the traffic that has to be kept out.