Iowa Permit Practice Test 1
This free Iowa practice test has 30 multiple-choice questions covering road signs, right-of-way, speed limits, and safe driving — the same topics the Iowa DOT tests. You need 80% correct to pass the real Iowa DOT Knowledge Test.
Tap an answer. The explanation opens so you can learn it, then go on. Keyboard: A–D or 1–4 to answer, then Enter or Space.
Question 1 of 30
1. How far from a stop sign or traffic signal should you stay when you park, unless signs say otherwise?
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Correct answer: B. Thirty feet from a stop sign or signal keeps the sign visible and the corner open for turning vehicles. Parking closer creates a blind box. Testers bundle this with 15 / 20 / 50 as the parking-distance set.
2. The signal shows a green arrow for your left turn. What does having a 'protected' turn mean?
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Correct answer: B. A green arrow gives you a protected turn: conflicting traffic is held by a red signal. Still glance for people or vehicles already in the intersection, because protected means favored, not guaranteed safe.
3. In Iowa, an under-21 driver can face a license suspension for alcohol at a much lower level than an adult DUI. That zero-tolerance level is which of these?
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Correct answer: D. Reaching 0.02% can cost a driver under 21 their license in Iowa, even when they show no obvious impairment. The state treats underage drinking and driving as a license issue first, aiming to stop the habit early.
4. A work zone is posted 45 mph with workers on foot beside the cones. Why should you treat that number as a hard ceiling?
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Correct answer: A. Work-zone limits protect people standing inches from traffic, and many states double the fine. Slow to the posted number before the first cone. Orange zone, orange alert: the speed is real and the penalty is steeper.
5. A school-zone sign is posted 25 mph, and children are on the sidewalk. The next block is posted 35. When may you return to 35?
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Correct answer: B. School-zone speeds apply through the marked zone while children are present or the lights flash, depending on the sign. Do not jump back to the higher limit at the building line. Wait for the zone to end.
6. An officer stops an adult driver in Iowa and a breath test is given. At what BAC reading can that driver be charged with driving under the influence, even if their driving looked steady?
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Correct answer: C. A BAC of 0.08% or more is enough by itself for a DUI charge in Iowa. The law uses a fixed number because alcohol impairs everyone, and drivers are poor judges of their own impairment behind the wheel.
7. An orange triangle with a red border is mounted on the back of a vehicle ahead. What is that vehicle doing?
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Correct answer: B. The slow-moving-vehicle emblem marks farm and other equipment that usually travels 25 mph or less. Give it a wide berth and pass only when you can see far enough ahead. Orange triangle equals slow vehicle.
8. An officer in Iowa stops a driver who is 18. A test shows a very small amount of alcohol. The under-21 threshold that can trigger a violation is:
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Correct answer: C. Under-21 drivers in Iowa are not judged by the adult 0.08%-style line. The threshold is 0.02%. That is why testers keep asking the youth number separately from the adult number.
9. You are passing a bicyclist on a two-lane road. How much space should you leave when you can?
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Correct answer: B. A common safe-passing standard is at least three feet, and more when you are going fast or the bike is wobbling. If you cannot give the space, wait. Squeezing by is how mirrors hit handlebars.
10. You are counting down the days until you can start driving in Iowa. The earliest age you can hold a learner's permit is which of these?
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Correct answer: D. The countdown ends at 14, the minimum learner's permit age in Iowa. Starting at the minimum is smart: more months of supervised practice before licensure means more experience with traffic, weather, and night driving while coached.
11. A pedestrian has stepped into a marked crosswalk on your street, and the light is green for you. What must you do?
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Correct answer: B. Pedestrians in a crosswalk have the right-of-way even when your light is green. Stop or slow until they are clear. A green light does not let you run someone over. People in the stripes go first.
12. A person with a white cane is about to cross the street ahead of you. What must you do?
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Correct answer: A. A white cane or guide dog marks a pedestrian who is blind, and that person has the right-of-way every time. Stop if needed and do not honk, which can confuse them. White cane means your brakes, not your horn.
13. On a rural road at dusk you pass a yellow diamond sign showing a leaping deer. What is the proper response?
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Correct answer: A. A deer crossing sign marks a stretch where animals often enter the road, so slow down and watch the shoulders, particularly around dawn and dusk. Deer travel in groups, so one crossing usually means more are coming. Where there's one, expect another.
14. If headlights fail, what first step does the official AZ driver manual (nationally taught headlight-failure technique) list?
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Correct answer: A. Official Arizona Driver License Manual wording — taught the same way in many state manuals — says Try the high beam/low beam switch. This may restore normal function. Turn the headlight switch on and off several times. If neither of these steps work, put on the parking lights, emergency flashers or turn signals; pull to the side of the road and stop.
15. A friend says every US interstate is 80 mph. In Iowa, the highest posted highway limit is actually:
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Correct answer: A. Interstate limits vary. Iowa tops out at 70 mph where posted. Learn the number for your state, then obey the sign in front of you, which is often lower.
16. You plan to turn off an Iowa road where the posted limit is 55 mph. How far before the turn must your signal begin?
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Correct answer: D. Iowa scales signal distance to speed: at least 100 feet when the limit is 45 mph or less, and 300 feet when it is faster. Quicker traffic needs earlier warning. Hook: over forty-five, signal three hundred.
17. Why is it illegal to park on a sidewalk or in a crosswalk?
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Correct answer: B. Sidewalks and crosswalks are reserved walking space; a parked car there pushes pedestrians, strollers, and wheelchairs out into traffic lanes. The law keeps walking paths continuous and safe. If people walk there, your car does not belong there.
18. Why does NHTSA tell you to slow down in snow or sleet?
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Correct answer: A. Official NHTSA winter-driving guidance says Slow down. It’s harder to control or stop your vehicle on a slick or snow-covered surface. The leftover bridges-ice-first sentence is not on that page; this nearby official slick-surface rule is.
19. A teen walks into a Iowa Department of Transportation (Iowa DOT) office in Iowa to apply for a first learner's permit. The office can accept the application once the teen is what age?
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Correct answer: B. The Iowa DOT accepts learner's permit applications at age 14 in Iowa. Bring proof of identity, residency, and usually a parent's signature, then pass the knowledge and vision screenings. Age is simply the first box to check.
20. A yellow diamond sign shows a side lane curving in to join the main road ahead. You are on the main road. What does the sign mean?
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Correct answer: C. A merge sign warns that another roadway joins yours ahead. Entering drivers must yield, but you should adjust your speed or change lanes when safe to open a gap. Merging works best when both drivers cooperate like a zipper.
21. Your GPS routes you through a Iowa neighborhood of homes and parked cars with no posted speed limit. State law caps your speed there at what value?
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Correct answer: D. State law gives unposted residential areas in Iowa a default cap of 25 mph. Parked cars shrink your view of crossing pedestrians, which is exactly why the cap is low. Posted signs, where present, replace the default.
22. Setting cruise control on a rural Iowa interstate posted at the state maximum, you should set it no higher than which speed?
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Correct answer: B. The state maximum in Iowa is 70 mph, so cruise control should not be set above it where that limit is posted. Think of the posted limit as a ceiling for ideal conditions, not a required speed.
23. What is the minimum speed for vehicles traveling on Iowa's interstate system under normal conditions?
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Correct answer: C. Iowa sets a 40 mph interstate minimum; vehicles that cannot keep that pace are barred because big speed gaps force sudden braking and risky passing. Interstates have a floor as well as a ceiling: forty to get on.
24. What first responsible-driver step does NHTSA list if you plan to drink?
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Correct answer: A. Official NHTSA drunk-driving guidance says Plan your safe ride home before you start the party, choose a non-drinking friend as a designated driver. If you drink, do not drive for any reason.
25. An Iowa signal shows a steady red arrow. What must turning drivers do?
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Correct answer: A. Iowa lists a steady red arrow with the instruction that drivers turning left or right must stop. It is not a circular red with an automatic right-turn exception. Wait for the indication that opens that movement.
26. A white sign with a green arrow and the word ONLY is mounted beside a traffic signal. When may you move in that direction?
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Correct answer: B. A signal-mounted green arrow with ONLY ties that movement to the arrow indication. Go that way when the arrow is on and the path is clear; otherwise wait. Arrows assign time as well as direction.
27. A yellow diamond-shaped sign ahead shows a black walking figure. As you approach the marked crossing, what is the required response?
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Correct answer: B. A pedestrian crossing warning sign means people may be entering the roadway ahead, so reduce speed and prepare to stop. Pedestrians lose in a collision with a car. Treat the walking figure as a person already stepping off the curb.
28. What is the minimum age to apply for a learner's permit in Iowa?
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Correct answer: A. Iowa lets you apply for a learner's permit at 14, according to the Iowa DOT. You still have to pass the knowledge and vision screens and meet any parent-consent rules. Age opens the door; it does not skip the test.
29. While you wait to turn, the green arrow changes to a steady yellow arrow. What is the signal telling you?
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Correct answer: D. A steady yellow arrow warns that the protected turning phase is about to end. Stop if you can do so safely; drivers already at the point of no return may finish the turn cautiously. Yellow arrow means wrap up, not speed up.
30. May you drive unsupervised on a learner’s permit, according to NHTSA?
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Correct answer: A. Official NHTSA GDL guidance says A learner’s permit allows driving only while supervised by a fully licensed driver. GDL reduces the amount of unsupervised driving by 16-year-olds. The leftover empty-road exception is not on that page.
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