Idaho Permit Practice Test 2

26 questions written from the Idaho Driver's Handbook, with an explanation and page citation for every answer.

Question 1 of 26
Alcohol & drugsIdaho rule

In Idaho, a driver under 21 is considered to be driving under the influence at what blood-alcohol concentration?

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About this test

These questions were written from the Idaho Driver's Handbook (July 2026). 16 of the 21 Idaho questions in this test cover rules that are specific to Idaho or differ between states. Every answer comes with an explanation and a link to the exact page it comes from, so you can check it yourself.

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Sample questions from this test

  1. In Idaho, a driver under 21 is considered to be driving under the influence at what blood-alcohol concentration?

    • A 0.04 or more
    • B 0.05 or more
    • C 0.08 or more
    • D 0.02 or more
    Show answer

    D. 0.02 or more

    Idaho sets a much lower limit for young drivers: 0.02 for anyone under 21, compared with 0.08 for drivers 21 and older. For an under-21 driver, even a single drink can be enough to reach it.

    Source: Idaho Driver's Handbook, page 131

  2. Two-lane road with a broken yellow center line
    View diagram
    Two-lane road with a broken yellow center lineYou

    When passing on a two-lane road, how far from oncoming traffic must you complete the pass?

    • A Before coming within 200 feet of it
    • B Before coming within 100 feet of it
    • C Before coming within 50 feet of it
    • D Before coming within 500 feet of it
    Show answer

    A. Before coming within 200 feet of it

    Idaho requires you to finish a pass before coming within 200 feet of oncoming traffic, and before reaching a marked no-passing zone. If you cannot, pull back and wait.

    Source: Idaho Driver's Handbook, page 78

  3. Merging from an acceleration lane onto a highway
    View diagram
    Merging from an acceleration lane onto a highwayYouAcceleration lane

    As you enter a freeway from the acceleration lane, what should you do?

    • A Speed up to match freeway traffic and yield to vehicles already on it
    • B Stop at the end of the ramp and wait for a large gap
    • C Enter slowly and let freeway traffic adjust to you
    • D Drive onto the shoulder until a gap opens
    Show answer

    A. Speed up to match freeway traffic and yield to vehicles already on it

    Use the acceleration lane to reach the speed of freeway traffic so you can blend in smoothly. Remember that you must yield to traffic already on the freeway.

    Source: Idaho Driver's Handbook, page 84

  4. What colors are warning signs in a work zone?

    • A Yellow and black
    • B Red and white
    • C Orange and black
    • D Green and white
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    C. Orange and black

    Work zones are marked with orange signs, cones, drums, barricades or arrow panels. Warning signs in a work zone are orange and black, so orange should always tell you to slow down and stay alert.

    Source: Idaho Driver's Handbook, page 46

  5. A bicyclist approaches a stop sign in Idaho with no other traffic near the intersection. What does Idaho law require of the bicyclist?

    • A The bicyclist must stop completely like a car
    • B The bicyclist may proceed with caution without coming to a complete stop
    • C The bicyclist must get off and walk the bike across
    • D The bicyclist must wait for a car to arrive and wave them on
    Show answer

    B. The bicyclist may proceed with caution without coming to a complete stop

    In Idaho, bicyclists do not need to come to a complete stop at stop signs. They must still yield to vehicles in or near the intersection and then proceed with caution, so drivers should expect this.

    Source: Idaho Driver's Handbook, page 98