Idaho DMV Permit Practice Test 2026

This page covers what you need to know for the Idaho driver's license knowledge exam: how the test works, the Idaho-specific rules that often show up on it, and sample questions with explained answers. Everything here is based on the official Idaho driver's manual and state traffic code (sources are listed at the bottom). The real Idaho test has 40 questions and you need 34 correct (85%) to pass.

When you're ready, take a free 25-question practice test that mixes Idaho-specific questions with general driving questions, with an explanation after every answer. Each attempt draws a new set. No signup needed.

Idaho Permit Test and Licensing Facts

Knowledge Test	40 questions, must score 34/40 (85%) to pass
Minimum Permit Age	14 years 6 months
Minimum License Age	15
Speed Limits	Highway: up to 80 mph \| Residential: 35 mph \| School Zone: 15 mph
DUI Law	BAC limit: 0.08% (Under 21: 0.02%)
Point System	Each moving violation carries 1 to 4 points. Points can be removed once every three years by completing an ITD-approved course.

Rules Specific to Idaho

Idaho allows highway speeds of up to 80 mph on certain interstates
Idaho allows drivers to obtain a supervised instruction permit at 14 years 6 months — one of the youngest in the US
Idaho requires the written test to be passed with 85% — higher than most states

Sample Idaho Permit Test Questions

These questions cover rules that are specific to Idaho. They're the ones people most often miss, because the answer differs from state to state.

In Idaho, what blood alcohol concentration (BAC) is the per se legal limit for an adult driver?
- A. 0.05%
- B. 0.08%
- C. 0.10%
- D. 0.15%
Answer: 0.08%. A BAC of 0.08% or higher is considered legally intoxicated for adult drivers.
In Idaho, an under-21 driver may be penalized for alcohol driving at or above which BAC?
- A. 0.00%
- B. 0.02%
- C. 0.05%
- D. 0.08%
Answer: 0.02%. Idaho applies a lower BAC threshold to drivers under 21.
In Idaho, children of which age group must be secured in an approved child restraint system?
- A. Age 4 and younger
- B. Age 6 and younger
- C. Age 8 and younger
- D. Age 12 and younger
Answer: Age 6 and younger. Children age 6 and under must be properly secured in a child restraint system.
In Idaho, how far before turning or changing lanes must you signal?
- A. 50 feet
- B. 100 feet
- C. 200 feet
- D. 300 feet
Answer: 100 feet. Drivers must signal at least 100 feet before making a turn or lane change.
In Idaho, parking is prohibited within how many feet of a fire hydrant?
- A. 5 feet
- B. 10 feet
- C. 15 feet
- D. 25 feet
Answer: 15 feet. This distance ensures emergency access to fire hydrants.
How much supervised driving must an Idaho teen complete under the GDL program?
- A. 30 hours, 5 at night
- B. 40 hours, 10 at night
- C. 50 hours, 10 at night
- D. 60 hours, 15 at night
Answer: 50 hours, 10 at night. Teens must accumulate at least 50 hours of supervised driving, 10 of them at night.
What does Idaho's required driver training program include?
- A. 10 hours classroom and 4 hours driving
- B. 30 hours classroom, 6 hours observing, and 6 hours behind the wheel
- C. 24 hours classroom and 8 hours driving
- D. No classroom, 20 hours driving
Answer: 30 hours classroom, 6 hours observing, and 6 hours behind the wheel. Driver training includes 30 hours of classroom, 6 hours observing in-car, and 6 hours behind the wheel with an approved instructor.
Driver training is required in Idaho for applicants under what age?
- A. 16
- B. 17
- C. 18
- D. 21
Answer: 17. Driver training is required for anyone under 17 applying for an Idaho driver's license.
For the first 6 months with an Idaho license (under 17), how many passengers under 17 may you carry, unless related?
- A. None
- B. One
- C. Two
- D. Three
Answer: One. For the first six months, no more than one passenger under 17 unless they're related by blood, adoption, or marriage.
How many questions are on the Idaho knowledge test, and how many can you miss?
- A. 25 questions, miss up to 5
- B. 30 questions, miss up to 6
- C. 40 questions, miss up to 6
- D. 50 questions, miss up to 10
Answer: 40 questions, miss up to 6. The test has 40 questions taken from the Driver's Handbook, and you can miss up to six.
In Idaho, you may not park within how many feet of railroad tracks?
- A. 15 feet
- B. 25 feet
- C. 50 feet
- D. 100 feet
Answer: 50 feet. Don't park within 50 feet of railroad tracks, 20 feet of a crosswalk, or 30 feet of a stop sign, yield sign, or traffic signal.
In Idaho, you may not park within how many feet of a stop sign, yield sign, or traffic signal?
- A. 15 feet
- B. 20 feet
- C. 30 feet
- D. 50 feet
Answer: 30 feet. Idaho prohibits parking within 30 feet of a stop sign, yield sign, or traffic signal.
How far must Idaho high-beam headlights let you see people and vehicles?
- A. At least 100 feet
- B. At least 200 feet
- C. At least 350 feet
- D. At least 500 feet
Answer: At least 350 feet. High beams must reveal people and vehicles at least 350 feet away. Low beams must light the road at least 100 feet ahead.
What happens in Idaho if you refuse an evidentiary alcohol test (first offense)?
- A. A warning
- B. A $250 civil penalty and a one-year suspension with no driving privileges
- C. A 90-day suspension
- D. A $50 fine
Answer: A $250 civil penalty and a one-year suspension with no driving privileges. Refusal brings a $250 civil penalty. If upheld, a first refusal means a one-year suspension with no driving privileges of any kind.
How long is the suspension for a second test refusal within 10 years in Idaho?
- A. 1 year
- B. 18 months
- C. 2 years
- D. 5 years
Answer: 2 years. A second refusal within 10 years results in a two-year suspension.
When must you notify police about an Idaho crash?
- A. Only if someone dies
- B. If someone is injured or property damage is more than $1,500
- C. Only if damage exceeds $5,000
- D. Only if a car is towed
Answer: If someone is injured or property damage is more than $1,500. Report any crash in which someone is injured or property damage is more than $1,500.
How many points does Idaho assign for each moving traffic violation?
- A. 1 to 4
- B. 2 to 6
- C. 5 to 10
- D. 10 to 20
Answer: 1 to 4. Each moving violation carries one to four points, and points can be removed once every three years with an approved course.

Idaho Permit Test FAQ

How many questions are on the Idaho permit test?

The Idaho knowledge test has 40 multiple-choice questions. You need at least 34 correct answers (85%) to pass.

How old do you have to be to get a learner's permit in Idaho?

The minimum age for a learner's permit in Idaho is 14 years 6 months. The minimum age for a driver's license is 15.

What is the legal blood alcohol limit in Idaho?

Idaho calls impaired driving DUI. The limit is 0.08% BAC for drivers 21 and over, and 0.02% for drivers under 21.

How does the Idaho driver point system work?

Each moving violation carries 1 to 4 points. Points can be removed once every three years by completing an ITD-approved course.

What are the default speed limits in Idaho?

Typical limits in Idaho are up to 80 mph on highways, 35 mph in residential areas and 15 mph in school zones. Posted signs always take priority.

Sources

The facts and questions on this page are based on the following official Idaho government sources:

Facts and questions last checked against the Idaho Driver's Handbook on September 26, 2026.

Laws change. Always check the current Idaho driver's manual before your test. This site is unofficial and not affiliated with any Idaho government agency.