Idaho Car / Permit practice
Idaho Car / Permit: Road Signs practice test
Learn the shapes, colors, and meanings of regulatory, warning, and guide signs — from stop and yield to construction and school-zone signs.
Content reviewed against official driver handbooks · August 12, 2026
16 questions · pass with 13 correct. You get instant feedback and an explanation after every answer.
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12 sample Road Signs questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.
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1. What condition does a Divided Highway Ends sign warn Idaho drivers about?
Correct answer: The center strip stops and two-way traffic will no longer be separated
Past the sign the median disappears, so opposing traffic returns to the same pavement and you have to watch for oncoming vehicles.
Source: Idaho Driver's Handbook — Warning Signs
2. What does a sign reading "Road Closed To Thru Traffic" allow in Idaho?
Correct answer: Local residential and business traffic may enter, but the zone may not be used as a route through
Homes and businesses inside the closure can still be reached, but nobody may treat the closed stretch as a shortcut, so trips straight through are off limits.
Source: Idaho Driver's Handbook — Work Zone Signs
3. You pass an Added Lane sign on an Idaho highway. What is happening ahead?
Correct answer: Two highways come together, and left-lane traffic may move into the right lane
Two roadways are coming together, so drivers already in the left lane may move over into the right lane and you should check that the lane is clear and signal before shifting left yourself.
Source: Idaho Driver's Handbook — Warning Signs
4. What kind of destination does a brown-and-white guide sign point Idaho drivers toward?
Correct answer: Cultural, historical, or scenic points of interest
Brown backgrounds are set aside for points of cultural, historical, or scenic interest, which separates them from the green mileage signs and the blue service signs.
Source: Idaho Driver's Handbook — Guide Signs
5. On an Idaho highway, a guide sign printed in white letters on a green background tells you what?
Correct answer: Which way to go and how far your destination is
Green guide signs are the ones Idaho uses for direction and mileage information, so they point you toward destinations and tell you how far away they are.
Source: Idaho Driver's Handbook — Guide Signs
6. White lettering on a blue guide sign in Idaho directs drivers to what?
Correct answer: Services available to motorists
Blue is reserved for signs advertising services along the route, so it steers travelers toward things such as fuel, food, and lodging rather than toward towns or attractions.
Source: Idaho Driver's Handbook — Guide Signs
7. Idaho posts a pennant-shaped sign on the left side of the roadway to tell drivers what?
Correct answer: That passing is not permitted in your lane
The pennant is the no-passing marker for your own lane, and it backs up the DO NOT PASS sign or the pavement striping that carries the same message.
Source: Idaho Driver's Handbook — Warning Signs
8. What should an Idaho driver expect after passing an Open Range sign?
Correct answer: Livestock roaming unfenced, with the right-of-way over vehicles
Open range country lets livestock graze and wander without fencing, and Idaho gives those animals the right-of-way in that area.
Source: Idaho Driver's Handbook — Warning Signs
9. Inside an Idaho work zone, a warning sign is printed in which colors?
Correct answer: Orange and black
Work zones swap the usual yellow warning background for orange, so warning signs inside the zone appear as black markings on orange while regulatory signs keep their black-and-white or red-and-white look.
Source: Idaho Driver's Handbook — Work Zone Signs
10. A barricade in an Idaho work zone displays a V-shaped stripe pattern. What does that pattern tell you?
Correct answer: The road is closed and you cannot continue
The V pattern is the barricade's way of saying the roadway is shut, so there is no path past it in either direction.
Source: Idaho Driver's Handbook — Barricades
11. An Idaho warning sign that alerts you to an unexpected condition ahead usually has what shape and coloring?
Correct answer: A diamond with black markings on a yellow face
The handbook describes the standard warning sign as a diamond carrying black symbols or words on a yellow background, with some school warnings printed on fluorescent yellow-green instead.
Source: Idaho Driver's Handbook — Warning Signs
12. Idaho uses barricades in two color schemes. What does the color tell a driver?
Correct answer: Red and white marks a permanent closure and orange and white a temporary one, but the instruction is the same
Red-and-white marks a closure meant to stay, and orange-and-white marks a temporary one, but the driver's obligation is identical no matter which colors appear.
Source: Idaho Driver's Handbook — Barricades
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Every Idaho question is written from the official Idaho driver handbook and checked against its current edition. DMV Test Free is a free, independent study resource — not affiliated with any DMV or government agency. About DMV Test Free