Idaho Permit Practice Test 1
This free Idaho practice test has 30 multiple-choice questions covering road signs, right-of-way, speed limits, and safe driving — the same topics the DMV tests. 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. 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.
2. A pentagon-shaped fluorescent yellow-green sign shows two walking children. What is it warning you about?
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Correct answer: B. The five-sided shape is reserved for school and school-crossing signs. Slow down and watch for children who may step off the curb without looking. Pentagon plus kids means school.
3. A school bus ahead of you on a two-lane Idaho road stops and flashes its red lights. What must you do?
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Correct answer: C. In Idaho you must stop for a school bus flashing red lights and stay stopped until the lights quit and every child is clear of the roadway. Kids move unpredictably near buses. The only exception: opposite direction on a highway of four or more lanes.
4. When a vehicle with flashing lights is stopped on or next to a roadway, what does official NHTSA Move Over guidance say drivers should do?
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Correct answer: A. Official NHTSA Move Over guidance says all 50 states have Move Over laws. When a vehicle with flashing lights is stopped on or next to a roadway, drivers approaching the vehicle should change into a lane not immediately adjacent to the vehicle, or slow down to a reasonable speed if you’re unable to safely make a lane change.
5. Which agency administers the learner's-permit knowledge test in Idaho?
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Correct answer: A. In Idaho, driver licensing — including the permit knowledge test — is run by the Division of Motor Vehicles (DMV). Federal agencies write guidance and fund programs, but they do not hand you a Idaho permit. When in doubt, start at the DMV site.
6. Why do speed limits drop in highway work zones?
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Correct answer: A. Work zones squeeze traffic past workers, machinery, narrowed lanes, and sudden stops, so limits drop to give everyone more reaction time. Many places also raise fines there. Slow down where people are standing next to moving traffic.
7. In Idaho, what is the youngest age at which you can apply for a learner's permit?
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Correct answer: B. Idaho issues learner's permits starting at age 14½. The permit opens the first stage of graduated licensing, where you build skills with a supervising adult before earning fuller privileges. Know your state's number; it varies nationwide.
8. In Idaho, a driver who is 21 or older commits a per-se drunk-driving offense once their blood alcohol concentration reaches which level?
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Correct answer: B. 'Per se' means the number alone proves the offense. In Idaho, that number is 0.08%. No other proof of bad driving is needed at that level, and alcohol can still impair you below it.
9. What is the three-second following rule in good weather?
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Correct answer: A. Pick a fixed mark. When the car ahead passes it, count one-thousand-one, two, three. You should not reach the mark sooner. That gap grows with speed. Double it in rain; triple it on ice. Testers treat this as the core distance question.
10. On a multilane highway, white lines separate the lanes. What does the white color tell you about the traffic around you?
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Correct answer: B. White lines divide lanes of traffic that flow the same way, while yellow divides opposing flows. Reading line color at a glance tells you instantly where oncoming cars can be. White means with you, yellow means toward you.
11. On a highway, you look for the way to your destination city. What kind of information do signs with a green background give you?
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Correct answer: D. Green guide signs point the way, listing destinations, how many miles remain, and which exits to take. They inform rather than command, so no action is required. Think of green as the color that says go this way.
12. A classmate insists everyone must wait until 18 to start driving in Idaho. The real minimum age for a learner's permit is which of these?
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Correct answer: D. Your classmate is wrong: Idaho grants learner's permits at 14½. Starting earlier gives you months of supervised practice while risk is lowest. When rules feel fuzzy, confirm them in the official state driver handbook.
13. Children are playing near the curb on an unposted neighborhood street in Idaho. Unless a sign says otherwise, the fastest you may legally drive here is which speed?
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Correct answer: A. The default residential limit in Idaho is 35 mph unless otherwise posted. With children nearby, you should often go slower still, because stopping distance grows quickly with speed and kids can dart into the street without warning.
14. What does the term "no-zone" mean when you drive near a large truck?
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Correct answer: C. No-zones are the huge blind spots in front of, behind, and beside a large truck where the driver simply cannot see you. A quick test: if you cannot see the driver's face in the truck's mirror, you are invisible.
15. If your vehicle catches fire, what first steps does the U.S. Fire Administration list?
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Correct answer: A. Official USFA vehicle-fire guidance says Pull over as quickly as you can when it is safe. Once you have stopped, turn off the engine. Get everyone out of the vehicle. Never return to a burning vehicle. Move everyone at least 100 feet from the burning vehicle and well away from traffic. Call 911.
16. In Idaho, 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 Idaho, 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.
17. A signal shows a flashing yellow arrow for a left turn. What does that allow?
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Correct answer: A. A flashing yellow arrow is a yield-and-turn: you may go left after judging gaps, because oncoming traffic still has a green. It is not a protected arrow. Flash yellow means you choose the gap; solid green arrow means the gap is held for you.
18. When must you use headlights in Idaho besides between sunset and sunrise?
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Correct answer: A. Idaho requires headlights between sunset and sunrise, or when visibility has been reduced to below 500 feet. Use headlights, not just parking lights. Dim to low beam when approaching or following another vehicle.
19. Setting cruise control on a rural Idaho 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 Idaho is 80 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.
20. What supervision does NHTSA require during the learner’s permit phase?
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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. The leftover front-seat-only sentence is not on that page; this nearby official supervision rule is. Learn that official wording, then answer the knowledge test from those words.
21. You are driving on a road with few traffic lights when you see a yellow diamond sign showing a traffic signal symbol. Why is this sign posted, and how should you respond?
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Correct answer: B. Signal-ahead warnings are posted where a traffic light may surprise drivers, such as after a long stretch without one or where a hill blocks the view. Ease off the gas early so a sudden red light cannot catch you.
22. Signs on Idaho highways vary from road to road, but the law sets one absolute top limit for the fastest routes. That limit is which value?
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Correct answer: D. By statute, 80 mph is the fastest any Idaho road can be posted. Below that ceiling, engineers set each road's limit for its design and traffic, which is why the posted sign on your road governs.
23. An Idaho signal is a flashing circular yellow. What should you do?
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Correct answer: A. Idaho says a flashing circular yellow indication means caution. Slow down, look for hazards, and proceed only when it is safe. It is not a stop and not a protected movement.
24. Who may legally park in a space reserved for people with disabilities?
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Correct answer: C. Reserved accessible spaces are only for vehicles showing a valid disability placard or plate, used when the person it was issued to is aboard. These wide, close-in spots are essential access, which is why enforcement is strict everywhere.
25. 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.
26. If a state legalizes marijuana possession, may you drive under the influence of the drug?
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Correct answer: A. Official NHTSA drug-impaired-driving guidance says Even in states where marijuana laws have changed, it is still illegal to drive under the influence of the drug. Driving impaired by any substance is against the law in all 50 states and the District of Columbia.
27. You turn onto a quiet Idaho street lined with houses and no speed sign. Unless a local rule posts something else, the usual default is:
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Correct answer: B. Unposted residential streets in Idaho are generally 35 mph. Watch for school and work-zone drops. When houses line the road and no sign argues otherwise, think 35 mph.
28. Two solid yellow lines run down the center of the road. What do they prohibit?
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Correct answer: D. Double solid yellow lines ban passing for traffic in both directions, because sight distance or traffic makes passing unsafe there. Crossing is generally allowed only to turn into a driveway or side road, not to overtake.
29. Do automated driver-assistance features remove your duty to watch the road, according to NHTSA?
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Correct answer: A. Official NHTSA automated-vehicle guidance says Every vehicle currently for sale in the United States requires the full attention of the driver at all times for safe operation. Even the highest level of driving automation available to consumers requires the full engagement and undivided attention of drivers.
30. Does the posted speed limit stay safe in bad weather, according to NHTSA?
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Correct answer: A. Official NHTSA speeding guidance says Speed also affects your safety even when you are driving at the speed limit but too fast for road conditions, such as during bad weather, when a road is under repair, or in an area at night that isn’t well lit. The leftover hydroplane-film sentence is not on that page; this nearby official weather-speed rule is.
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