State guides · Idaho
Idaho DMV written test guide
Everything you need to know about the written test in Idaho, with the rules your state asks about and practice questions with answers.
| Agency | Idaho Transportation Department, Division of Motor Vehicles (ITD DMV) |
|---|---|
| Official handbook | Idaho Driver's Handbook ↗ |
| Questions | 40 |
| To pass | 34 of 40 correct |
| Test in Spanish? | Yes |
Handbook: the Class D knowledge test has 40 questions and you can miss up to 6. Taken in person at a county driver's license office (no online test option found). If you fail, you must wait 3 days to retest and pay the test fee again. You must be at least 15 to take the knowledge and skills tests.
Idaho rules you need to know
- Alcohol, 21 and over: In Idaho the legal limit for drivers 21 and over is 0.08% BAC. Official source ↗
- Alcohol, under 21: Under 21, a BAC of 0.02% or more counts as driving under the influence. Official source ↗
- Following distance: Keep at least 3 seconds behind the car ahead, and much more in bad weather. Official source ↗
- High beams: Dim your high beams within 500 feet of oncoming traffic and 200 feet before overtaking. Official source ↗
- Turn signal: Signal 100 feet before turning in town, or 5 seconds before on highways. Official source ↗
- Fire hydrant: Do not park within 15 feet of a fire hydrant. Official source ↗
- Crosswalk: Do not park within 20 feet of a crosswalk. Official source ↗
- School bus: Oncoming drivers need not stop for a school bus on highways with four or more lanes. Official source ↗
- Right on red: Right on red is allowed after stopping and yielding, unless a sign prohibits it. Official source ↗
- Left on red: Left on red is allowed only from a one-way street onto another one-way street. Official source ↗
- Cell phone: No driver may use a hand-held phone while driving, even at a light; hands-free use is allowed. Official source ↗
- Move Over law: For stopped emergency vehicles or tow trucks with lights, slow below the limit and move over a lane if you can. Official source ↗
- Permit age: You can get a Driver Training Permit at 14 and a half, and a license at 15. Official source ↗
Idaho test FAQ
How many questions are on the Idaho written test?
The written test has 40 questions and you need 34 correct to pass.
Can I take the Idaho driver's test in Spanish?
Yes. Idaho offers the written test in Spanish.
How old do you have to be to get a learner's permit in Idaho?
You can get a Driver Training Permit at 14 and a half, and a license at 15.
What documents do I need for a permit in Idaho?
It depends on your situation (identity, residency and Social Security number or an alternative). Check the official list from Idaho Transportation Department, Division of Motor Vehicles (ITD DMV) before you go.
Documents guide → · How to pass on the first try →
11 Idaho practice questions
1. The Idaho knowledge test has 40 questions. What is the most you can miss and still pass?
- 4
- 6
- 10
- 8
Show answer
Answer: 6
You can miss up to six of the 40 questions; a seventh miss means you fail.
2. In Idaho, if you fail the knowledge test, how long must you wait to retest?
- 7 days
- 30 days
- 1 day
- 3 days
Show answer
Answer: 3 days
You must wait three days to retest, and you pay the knowledge test fee again.
3. In Idaho, if you are under 21, at what BAC are you considered to be driving under the influence?
- 0.04%
- 0.02%
- 0.05%
- 0.08%
Show answer
Answer: 0.02%
Drivers under 21 are DUI at a BAC of 0.02 percent or more; 0.04 is for commercial drivers.
4. What is the minimum age for an Idaho Driver Training Permit?
- 14 and a half
- 16
- 14
- 15 and a half
Show answer
Answer: 14 and a half
Idaho issues Driver Training Permits starting at 14 and a half; you can be licensed at 15.
5. You are licensed in Idaho but not yet 16. Without a licensed adult 21 or older beside you, when may you drive?
- 5 am to midnight
- 7 am to 8 pm
- 6 am to 9 pm
- 5 am to 10 pm
Show answer
Answer: 5 am to 10 pm
Under 16, driving is daylight only, defined as 5 am to 10 pm, unless a licensed driver 21 or older sits beside you.
6. You are going the opposite way on an Idaho highway with four lanes, two each way, and a school bus stops with red lights. What do you do?
- Stop only if you see kids
- You need not stop
- Always stop, no exceptions
- Slow to 20 mph
Show answer
Answer: You need not stop
Oncoming traffic does not have to stop on highways with four or more lanes; traffic behind the bus must stop.
7. Under Idaho law, when may you use your phone while driving?
- If it's for under a minute
- Any time you aren't texting
- Only hands-free or by voice
- When stopped at a red light
Show answer
Answer: Only hands-free or by voice
Since 2020 Idaho bans hand-held device use while driving, even when stopped in traffic; hands-free and voice use are allowed.
8. On an Idaho road with one lane each way, you see a stopped tow truck with flashing lights. What must you do?
- Slow below the speed limit
- Keep going, it's just a tow truck
- Honk as you pass
- Stop behind the tow truck
Show answer
Answer: Slow below the speed limit
You must slow below the posted limit; with two or more lanes your way, you must also move over if safe.
9. In Idaho, how close to a fire hydrant may you park, at minimum?
- 25 feet
- 20 feet
- 15 feet
- 10 feet
10. In Idaho, within how many feet of a crosswalk at an intersection may you NOT park?
- 30 feet
- 50 feet
- 20 feet
- 25 feet
11. In Idaho, at least how far ahead must you signal before turning?
- 300 feet
- 100 feet
- 25 feet
- 50 feet
Show answer
Answer: 100 feet
Signal 100 feet before turning in town, or 5 seconds before on highways.
Practice with Idaho rules
360+ voiced questions, a practice test in your state's format and video lessons.
Facts checked against the official state handbook and website in October 2026. Rules change: always check the official handbook.