What is the safest action when you are being tailgated?

Move over or add space ahead and let them pass

Tap your brakes hard to warn them off

Ignore them and maintain your exact speed

Speed up well past the limit to pull away from them

Which of the following is NOT a legal reason to use your horn?

To express frustration at another driver

To alert a child about to run into the road

To warn a driver drifting into your lane

To warn others on a blind mountain curve

How do most state handbooks tell you to measure a safe following distance?

Count the seconds between it and you passing a fixed point

Follow at a distance in feet equal to your speed in mph

Stay close enough to read the license plate of the car ahead

Count car lengths - one car length is enough at any speed

Your car stalls on an Idaho highway and you have emergency flares. Where should you place them?

200 to 300 feet behind your car

500 to 600 feet behind your car

What does this warning sign mean?

A lane is added; no merge needed

Two roads join; both must merge

Free Idaho DMV Test Simulator 2026

40 questions85% to passExplanations includedFree

40Real test questions

85%Pass score

This DMV Test Simulator is modeled on the Division of Motor Vehicles (DMV) written knowledge exam, which has 40 questions; to pass you need 34 of 40 correct (85%). It is a mock test: 40 questions, the length of the real test, scored to the 85% pass mark. Answers are marked only when you submit the whole test, then you review every question with its explanation. Every question includes an explanation, so you learn the rule behind each answer - not just whether you got it right.

Mock test

Idaho DMV mock test

Answer all 40 questions first. Nothing is marked until you submit the whole test, so the score shows how ready you are, and then you review every answer with its explanation.

40 questions, the same number as the real test
To pass: 34 of 40 correct (85%)
Skip, go back and change answers until you submit
Unanswered questions count as wrong

Time: We found no published time limit for the Idaho knowledge test.

Inside this test

What's on the Idaho DMV Test Simulator

The real Idaho knowledge test has 40 questions. You can miss up to 6 of the 40 questions and still pass. The minimum is 34 correct answers (85%). The simulator draws a fresh set from all 199 Idaho permit questions each time, so no two attempts are the same.

Topics in this test's question pool

Road signs 68
Traffic laws 46
Safe driving 30
Right of way 16
Parking 10
Alcohol & drugs 9
Emergencies 9
Vehicle equipment 7
Speed limits 4

199 questions in the pool, 38 of them written specifically for Idaho. Each attempt shows 40 in a new order.

Sample questions from this test, with answers

Want to test yourself first? Take the test above before reading these. Every answer below is checked against the source shown.

1. Unless a different limit is posted, what is the top speed in an Idaho residential or business district?
- A. 25 mph
- B. 30 mph
- C. 35 mph (correct)
- D. 45 mph
Why: Idaho sets 35 mph as the maximum in residential, business and urban districts unless signs post another limit. Drive slower when conditions call for it.
Source: official Idaho driver handbook, p.68 (PDF p.68), Speed Limits
2. What following distance does the Idaho manual give as the minimum in good conditions?
- A. One second
- B. Two seconds
- C. Three seconds (correct)
- D. Six seconds
Why: Idaho recommends at least three seconds behind the car ahead, counted as it passes a fixed object. Increase the gap at high speed and in bad weather.
Source: official Idaho driver handbook, p.79 (PDF p.79), Following Distances
3. The single most effective way to avoid an alcohol-related crash is to:
- A. Drink coffee and wait 30 minutes before driving
- B. Drive slowly and stay in the right lane
- C. Not drive at all after drinking any alcohol (correct)
- D. Stay under 0.08% by counting your drinks
Why: There is no safe way to drive after drinking. The only sure prevention is to not drive at all after consuming alcohol - arrange a designated sober driver, taxi, or rideshare instead.
Source: official Idaho driver handbook
4. What does this pentagon-shaped sign indicate?
- A. A hospital zone ahead
- B. A school zone or crossing (correct)
- C. A park or picnic area
- D. A no-passing zone begins ahead
Why: This five-sided (pentagon) yellow-green sign marks a school zone or school crossing. Slow to the posted school-zone speed and watch carefully for children.
Source: Federal MUTCD 11th ed. (Dec 2023) 2A.05, Table 2A-1 Use of Sign Shapes
5. A diamond-shaped orange sign indicates:
- A. A school zone
- B. A work zone ahead (correct)
- C. A slow-moving vehicle ahead
- D. A yield ahead
Why: Orange diamond-shaped signs indicate construction or work zones. Speed limits are often reduced and fines are doubled in work zones. Slow down and stay alert.
Source: official Idaho driver handbook
6. At a roundabout, in which direction does traffic flow and who has priority?
- A. Clockwise; traffic in the circle has priority
- B. Counterclockwise; circulating traffic has priority (correct)
- C. Counterclockwise; the larger vehicle has priority
- D. Counterclockwise; entering traffic has priority
Why: In the United States, traffic in a roundabout flows counterclockwise, and vehicles already circulating in the roundabout have the right of way. Entering drivers must yield and merge into a safe gap.
Source: official Idaho driver handbook

More Idaho facts, the full requirements table and the printable PDF are on the Idaho permit practice test page.

Idaho DMV Test Info

Questions on real test: 40
Passing score: 85%
Correct needed: 34 of 40 correct (85%)
Minimum age: 14½ years old
Testing agency: Division of Motor Vehicles

Official ID DMV Website ↗

More Idaho Tests

Study Tip

Don't just aim to pass this Idaho DMV Test Simulator once - keep taking it until you score 85% or higher two or three times in a row. Read the explanation after every question, even the ones you get right, to lock in the rule before your DMV exam.