Idaho Road Signs Test 2

4.9 out of 5 (146 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Idaho road sign questions are not handled as a separate official test with their own special passing score, which is worth knowing before you start studying the wrong way. They are part of the Idaho Class D knowledge test, mixed in with everything else the Idaho Driver’s Handbook covers: traffic laws, safe driving habits, signals, pavement markings, right-of-way rules, railroad crossings, impaired driving, sharing the road, and the everyday responsibilities that come with holding a license. This Idaho road signs practice test gives you a more focused way to work through that sign material without getting pulled into every other licensing topic at the same time. And yes, that matters. Road signs are easy to glance past when you are reading the handbook, because they feel familiar. Stop signs, yield signs, work zone signs, school zone signs, warning signs, regulatory signs — most drivers think they know them already. Some do. Some sort of do. Then a question about sign shape, color, or meaning shows up, and suddenly that “obvious” answer is not quite as obvious as it was five minutes ago. This Idaho DMV practice test includes 20 multiple-choice questions built around the signs, signals, and markings Idaho drivers are expected to recognize. You will see the kinds of details that matter on the real knowledge test: warning signs, regulatory signs, school and work zone signs, traffic signals, pavement markings, railroad crossings, right-of-way signs, and the colors and shapes that help you read the road quickly. Not slowly, not after a committee meeting in your head — quickly. For the official Idaho Class D knowledge test, the numbers are straightforward. There are 40 questions, and you need 34 correct answers to pass, which is 85%. If you miss more than 6, you have to wait 3 days before taking it again, and the knowledge test fee has to be paid again. New applicants, out-of-state transfer applicants, and drivers with an Idaho license expired for 25 months or more may be required to take it. You can take this practice drivers test as many times as you need, which is the point. Use it to tighten up the sign questions before test day, catch the ones you almost know, and stop treating road signs like background scenery. That little bit of review can save you from a very preventable retest.
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Sample Idaho Permit Test Questions

Question 1

Before crossing a broken white or yellow line, what must you determine?

  1. A. The movement can be made safely without interfering with traffic
  2. B. You are turning into a driveway
  3. C. The vehicle ahead is disabled
  4. D. You are traveling on a one-way street

Correct answer: A. – The movement can be made safely without interfering with traffic

A broken line generally permits a driver to cross when the movement can be completed safely. Broken white lines separate lanes moving in the same direction, while broken yellow lines are used where opposing traffic is present. Before leaving a marked lane, the driver must determine that the movement can be made safely.

Source: Idaho Code § 49-637(1) – Driving on Highways Laned for Traffic, Idaho Driver’s Handbook (July 2026) — Highway & Vehicle Knowledge, “Pavement Markings”

Question 2

On an Idaho two-lane, two-way highway, what must be true before you move left of center to pass?

On a two-way highway, you are allowed to drive on the left half of the roadway when:
  1. A. A double solid yellow centerline is present
  2. B. A solid yellow line is on your side
  3. C. Passing is permitted and the left side is clear for a sufficient distance
  4. D. You are approaching a curve with a restricted view

Correct answer: C. – Passing is permitted and the left side is clear for a sufficient distance

Before passing left of center, the roadway ahead must be clearly visible and free of oncoming traffic for enough distance to complete the maneuver without interference. Passing is restricted near obstructed curves, hillcrests, intersections, railroad crossings, bridges, viaducts, and tunnels. The passing vehicle must return to an authorized lane before coming within 200 feet of an approaching vehicle.

Source: Idaho Code § 49-634 – Limitations on Overtaking on the Left, Idaho Code § 49-635(1) – Further Limitations on Driving on Left of Center of Highway

Question 3

Which color is used for lines separating traffic moving in opposite directions?

  1. A. White
  2. B. Red
  3. C. Black
  4. D. Yellow

Correct answer: D. – Yellow

Yellow longitudinal markings separate traffic traveling in opposite directions. Depending on the location, the yellow line may be broken, solid, or used in a combination. White lane lines generally separate traffic moving in the same direction.

Source: Idaho Driver’s Handbook (July 2026) — Highway & Vehicle Knowledge, “Pavement Markings”, IDAPA 39.03.41.004 – Incorporation by Reference

Question 4

Directional and distance guide signs are usually:

  1. A. Orange with black lettering
  2. B. Green with white lettering
  3. C. Yellow with black lettering
  4. D. Red with white lettering

Correct answer: B. – Green with white lettering

Directional and distance guide signs use white lettering on a green background. The Idaho handbook distinguishes these from blue motorist-service signs and brown signs for cultural, historical, or scenic destinations. Reading guide signs early gives drivers time to select the appropriate lane or route.

Source: Idaho Driver’s Handbook (July 2026) — Highway & Vehicle Knowledge, “Guide Signs”

Question 5

A red circular sign with a horizontal white bar across its center means:

This sign means:
  1. A. Stop
  2. B. No U-turn
  3. C. Yield
  4. D. Do not enter

Correct answer: D. – Do not enter

A Do Not Enter sign prohibits entry into the roadway from the direction you are traveling. It is commonly placed where a driver could mistakenly enter a restricted roadway, one-way road, divided highway, or ramp. Do not continue past the sign.

Source: Idaho Driver’s Handbook (July 2026) — Highway & Vehicle Knowledge, “Traffic Signs—Do Not Enter”, IDAPA 39.03.41.004 – Incorporation by Reference

Question 6

Which sign directs traffic to pass on the right side of an island or barrier?

  1. A. A yellow diamond showing a divided highway ending
  2. B. A white rectangular sign with an arrow curving right around an obstruction
  3. C. A yellow diamond showing a sharp left turn
  4. D. A yellow diamond showing a lane ending

Correct answer: B. – A white rectangular sign with an arrow curving right around an obstruction

The Keep Right of Island sign directs drivers to remain on the right side of an island or barrier. It is a regulatory instruction rather than a general warning. Follow the arrow and pass the obstruction on the side indicated.

Source: Idaho Driver’s Handbook (July 2026) — Highway & Vehicle Knowledge, “Traffic Signs—Keep Right of Island”

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