Idaho Permit Practice Test 4
A fourth full-length Idaho practice test: 30 more questions with zero repeats from Tests 1–3 — including extra Idaho-specific rules. The real DMV Class D Knowledge Test has 40 questions, and you need 34 correct (85%) to pass.
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. Headed uphill at a curb, which way does the official CA handbook (nationally taught hill technique) turn the front wheels?
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Correct answer: A. Official California Driver Handbook parking technique — taught the same way nationwide — says Headed uphill: Turn your front wheels away from the curb (left-towards the center of the road) and let your vehicle roll back a few inches. The wheel should gently touch the curb.
2. Can prescription or over-the-counter medicine make driving illegal, according to NHTSA?
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Correct answer: A. Official NHTSA drug-impaired-driving guidance says it’s illegal everywhere in America to drive under the influence of alcohol, marijuana, opioids, methamphetamines, or any potentially impairing drug–prescribed or over the counter.
3. An officer in Idaho 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 Idaho 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.
4. What is the highest posted highway speed limit in Idaho?
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Correct answer: A. Idaho's highest posted highway limit is 80 mph. Most stretches are lower, and work zones or weather can cut it further. Do not assume every freeway in Idaho is signed at the state maximum.
5. A teen walks into a Division of Motor Vehicles (DMV) office in Idaho 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 DMV accepts learner's permit applications at age 14½ in Idaho. 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.
6. What does NHTSA say is the only true way to protect yourself against drowsy driving?
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Correct answer: A. Official NHTSA drowsy-driving guidance says Getting adequate sleep on a daily basis is the only true way to protect yourself against the risks of driving when you’re drowsy. Coffee and energy drinks last only a short time.
7. You turn off a busy road into a quiet subdivision in Idaho and see no speed limit sign on the new street. Your maximum legal speed is now which value?
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Correct answer: D. Once you enter an unposted residential street in Idaho, the limit drops to the default of 35 mph. Slow down as you turn in; the quiet look of a subdivision hides driveways, cyclists, and children near the pavement.
8. Your GPS routes you through a Idaho 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 Idaho a default cap of 35 mph. Parked cars shrink your view of crossing pedestrians, which is exactly why the cap is low. Posted signs, where present, replace the default.
9. An emergency vehicle is coming up behind you with lights and siren on a two-lane street. What should you do?
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Correct answer: B. Pull to the right and stop, clearing the lane. If you are in an intersection, clear it first, then pull over. Do not slam-stop in the path. Lights and siren mean yield the road, not freeze in the middle.
10. You see an Idaho State Police car stopped on the shoulder ahead with its lights flashing on a four-lane highway. What must you do?
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Correct answer: B. Approaching any stopped emergency, police, tow, or incident response vehicle with flashing lights in Idaho, you must slow below the posted limit and, on multilane roads, move to a non-adjacent lane when safe. Space protects roadside workers. Hook: slow down, slide over.
11. You are passing a slow truck on a Idaho highway posted at the state's maximum limit. Even while passing, your legal ceiling stays at which speed?
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Correct answer: B. Passing grants zero extra speed allowance; in Idaho the ceiling on those top-posted highways stays 80 mph. If you cannot complete the pass within the limit, wait for a better gap. The limit binds every maneuver.
12. You want to turn left on a circular green light with no arrow. Oncoming cars are coming straight through. Who goes first?
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Correct answer: B. A circular green lets you turn left only after yielding to oncoming traffic and to pedestrians. It is not a protected green arrow. Wait in the intersection if your state allows, then complete the turn without cutting anyone off.
13. What penalty does official NHTSA impaired-driving guidance say the laws should establish for failing or refusing a BAC test?
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Correct answer: A. Official NHTSA Uniform Guidelines for State Highway Safety Programs say The laws should establish effective penalties that include Administrative license suspension or revocation for failing or refusing to submit to a BAC or other drug test. The leftover implied-consent mnemonic is not on that page; this nearby official national refusal-penalty sentence is.
14. An ice-cream truck is stopped ahead and children are gathered around it. How should you drive past?
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Correct answer: C. Slow way down and cover your brake near children or a stopped ice-cream truck, because kids chase treats and forget traffic completely. Expect someone small to dart out. Around children, drive as if one already has.
15. What driving does NHTSA say a learner’s permit allows?
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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. An intermediate license allows unsupervised driving under certain restrictions. The leftover solo-practice claim is not on that page.
16. You are counting down the days until you can start driving in Idaho. 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 14½, the minimum learner's permit age in Idaho. Starting at the minimum is smart: more months of supervised practice before licensure means more experience with traffic, weather, and night driving while coached.
17. You are on an entrance ramp about to merge onto a freeway. Who is responsible for yielding?
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Correct answer: A. Drivers merging onto a freeway must yield to traffic already on it, using the ramp to match speed and slide into a gap. Through traffic cannot stop safely at highway speeds, so the entering driver adapts.
18. On any road sign, what does the color red signal to drivers?
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Correct answer: D. Red is reserved for the strongest commands: stop, yield, do not enter, and wrong way. It marks actions that are forbidden or must halt. When red appears, something about your movement has to change right now.
19. What space does NHTSA tell you to give a speeding driver?
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Correct answer: A. Official NHTSA speeding guidance says Give speeding drivers plenty of space. Speeding drivers may lose control of their vehicle more easily. The leftover slow-vehicle-blocks-flow sentence is not on that page; this nearby official space rule is.
20. A yellow line runs down the middle of a two-lane road. What does the yellow color of a center line tell you?
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Correct answer: A. Yellow center lines separate traffic moving in opposite directions, so anything across that line is oncoming. This color code works the same on every public road. Yellow in the middle means traffic meets there, not follows.
21. While planning a road trip across Idaho, you look up the fastest speed any of its highways allow. What is that statewide maximum?
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Correct answer: A. Idaho's top speed limit is 80 mph, found only on its fastest designated highways. Expect lower posted limits on most stretches, and remember signs control: the maximum applies only where a sign actually posts it.
22. Until what age does NHTSA say to keep a child in the back seat?
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Correct answer: A. Official NHTSA car-seat guidance says Keep your child in the back seat at least through age 12. All children under 13 ride in the back seat for maximum safety. Rear-facing is required under age 1.
23. You are in a left-turn lane facing oncoming traffic, and the signal shows a steady red arrow. What does the arrow mean?
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Correct answer: A. A steady red arrow prohibits the movement it points toward; you must stop and stay put until the signal changes. It shields turning drivers from crossing busy oncoming lanes. Think of a red arrow as a closed gate.
24. In Idaho, a driver who is 21 or older breaks the law by driving with a blood alcohol concentration (BAC) at or above what level?
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Correct answer: A. Idaho law makes it illegal to drive with a BAC of 0.08% or higher. Alcohol slows judgment and reaction time, and impairment can begin well below that number. Treat 0.08% as a legal line, not a safe target.
25. A school bus on a two-lane road has stopped with red lights flashing and the stop arm out. You are coming the other way. What do you do?
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Correct answer: B. On an undivided road, both directions stop for a loading school bus. Children can run from either side. The only common exception is the far side of a divided highway with a real median. Red lights plus arm equals freeze.
26. Many regulatory signs show a picture inside a red circle crossed by a red diagonal slash. In general, what does that design mean?
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Correct answer: D. In the MUTCD symbol system, a red circle with a diagonal slash over any picture means that action is not allowed, such as no trucks or no bicycles. It works without words, so drivers of any language understand instantly. Slash means stop doing it.
27. A white vertical rectangle reads SPEED LIMIT 55. What does that number legally mean?
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Correct answer: C. A white rectangular speed limit sign is a regulatory sign, so the number is the maximum lawful speed in ideal conditions. Rain, fog, or heavy traffic can make even that speed illegal. Treat the posted number as a ceiling, not a target.
28. An Idaho traffic signal is not functioning. How should you treat the intersection?
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Correct answer: A. Idaho’s manual says that whenever a traffic signal is not functioning, treat the intersection as a four-way stop. First to arrive goes first; if you arrive together, the vehicle on the left yields.
29. At a railroad crossing you see a white X-shaped sign reading RAILROAD CROSSING, with no gates or flashing signals. How should you treat it?
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Correct answer: B. The crossbuck is a regulatory sign that legally works like a yield sign at the tracks. Trains cannot swerve or stop quickly, so you must give way every time. At passive crossings, your eyes and ears are the only warning system.
30. You are 16 and received your Idaho driver's license three months ago. Which passengers under age 17 may ride with you?
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Correct answer: C. For six months after licensure, Idaho drivers under 17 may carry only one passenger under 17 unless the riders are related by blood, adoption, or marriage. Teen passengers multiply distraction and crash risk. Hook: first six months, one young friend.
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