Idaho's permit knowledge test is 40 questions, and you need 34 correct (about 85%) to pass.
Pick an answer on each question to see whether you got it right, with an explanation.
This is a short sample — DriveDrill has 200+ Idaho questions
and full-length mock exams in the app.
Q1. On a long downgrade you should:
A Coast in neutralB Ride the brakes steadily all the way downC Shift to a lower gear and use the brakes in short applicationsD Switch off the engine
Continuous braking overheats the brakes and they fade. Let the engine hold the vehicle back and brake in short firm applications.
Q2. In Idaho, at what distance must you dim your headlamps before meeting an oncoming vehicle?
A 100 feetB 200 feetC 1000 feetD 500 feet
Idaho law requires headlamps to be dimmed 500 feet before meeting another vehicle, and 200 feet before overtaking one.
Q3. A flagger in a work zone holds up a sign reading SLOW. You should:
A Stop until the sign is turnedB Slow down and pass through with cautionC Change lanes immediatelyD Maintain speed if the lane is open
Flaggers have the same authority as signs and signals in a work zone. Follow their direction and watch for workers on foot.
Q4. In Idaho, a vehicle traveling slower than the normal speed of traffic on a rural or two-lane highway and delaying three or more vehicles behind it must:
A Continue at its own pace since it has the right of wayB Turn off the road wherever safe to let the other vehicles passC Speed up to match traffic regardless of safetyD Only pull over if a law enforcement officer signals
Idaho law requires a vehicle traveling slower than the normal speed of traffic that is delaying three or more other vehicles on a rural area or two-lane highway to turn off the road wherever it is safe to let them pass.
Q5. A police officer is directing traffic at an intersection where the light is green. You should:
A Follow the signal because it is automaticB Stop and wait for the officer to leaveC Follow the officer's directions even if they contradict the signalD Choose whichever is safer
Directions from an officer or flagger override signs and signals every time.
Q6. In Idaho, if an adult in the front seat is not wearing a seat belt:
A An officer may ticket you only after stopping you for something elseB An officer may stop you for the seat belt violation aloneC The rule applies only on interstate highwaysD Seat belts are recommended but not required for adults
This is a secondary enforcement state, so the belt alone is not grounds for the stop. That is a rule about enforcement, not about safety -- the crash risk is the same, and the ticket still follows any other stop.
Q7. A front tire blows out at highway speed. You should:
A Steer sharply onto the shoulderB Hold the wheel firmly, ease off the accelerator and let the car slowC Brake hard immediatelyD Accelerate to regain control
Braking or sudden steering after a blowout can spin the car. Grip the wheel, come off the gas, then ease onto the shoulder once you are slow.
Q8. A flashing yellow arrow at a left-turn lane means:
A You have a protected left turnB You may turn left after yielding to oncoming traffic and pedestriansC Stop and wait for a green arrowD Left turns are prohibited
A flashing yellow arrow is an unprotected turn. Oncoming traffic has the green, so you may only go when there is a safe gap.
Q9. In Idaho, the move-over law requires you to change lanes, or slow down, when passing:
A Only stopped police, fire and ambulance vehiclesB Any stopped vehicle showing hazard lights or other warning signalsC Only vehicles stopped inside a marked work zoneD Stopped emergency vehicles and certain work or service vehicles showing warning lights, but not ordinary cars with hazard lights on
Move to a lane that is not next to the stopped vehicle when you safely can. When you cannot, slow down. People working at the roadside are struck every year by drivers who did neither.
Q10. You should check your mirrors:
A Every few seconds and before every braking, turn or lane changeB Only before turningC Only on highwaysD Once a minute
Knowing what is behind you is what turns a sudden stop into a controlled one.
DriveDrill is an independent study app. It is not affiliated with, endorsed by, or
connected to any state motor vehicle agency. These practice questions are written in
the style of Idaho's knowledge test and are not official test questions.