Idaho Car / Permit practice
Idaho Car / Permit: Signals & Pavement Markings practice test
How to read traffic signals, lane lines, and pavement markings — including yellow and white lines, arrows, and flashing lights.
Content reviewed against official driver handbooks · August 12, 2026
14 questions · pass with 11 correct. You get instant feedback and an explanation after every answer.
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12 sample Signals & Pavement Markings 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. On a vertically mounted Idaho traffic signal, where is the green light located?
Correct answer: At the bottom of the signal head
A vertical head runs red at the top, yellow in the middle, and green at the bottom; a horizontal head places red at the far left and green at the far right.
Source: Idaho Driver's Handbook — Traffic Signals
2. An Idaho road is marked with one solid yellow line beside one dashed yellow line. Who may cross to pass?
Correct answer: Only traffic in the lane next to the dashed stripe
Only the side of the roadway that faces the broken stripe is permitted to move across the pair to overtake; the lane sitting against the solid stripe may not.
Source: Idaho Driver's Handbook — Pavement Markings
3. What must an Idaho driver do at a flashing red signal indication?
Correct answer: Come to a full stop, yield, and go when the way is clear
A flashing red carries the force of a stop sign, so you halt completely, let cross traffic and pedestrians clear, and then move on once the way is open.
Source: Idaho Driver's Handbook — Traffic Signals
4. Traffic is backed up beyond an Idaho intersection and your light is green. What should you do?
Correct answer: Stay back until there is enough room beyond the intersection for your vehicle to clear it
A green does not entitle you to block the box; you hold back unless there is room on the far side for your whole vehicle to clear the intersection.
Source: Idaho Driver's Handbook — Traffic Signals
5. An Idaho street has a center lane outlined on both sides by a yellow dashed stripe paired with a solid yellow stripe. How may that lane be used?
Correct answer: For left turns from either direction of travel, but not for driving along
Drivers coming from either direction may use it to set up a left turn, or a U-turn where those are allowed, but traveling along it or crowding another driver who is already preparing to turn from it is not permitted.
Source: Idaho Driver's Handbook — Pavement Markings
6. When may an Idaho driver legally cross a double solid yellow centerline?
Correct answer: To make a left turn into or away from a driveway or a business entrance when it is safe
Overtaking across the double solid line is barred, but the markings do not prevent a left turn into or out of a driveway or business entrance when it can be done safely.
Source: Idaho Driver's Handbook — Pavement Markings
7. A steady red arrow is showing for your turn lane in Idaho. What are you permitted to do?
Correct answer: Wait, because no turn in the arrow's direction is allowed until a green or yellow indication appears
While the arrow stays red, the turn it points toward is closed to you, and you must hold until a green or yellow indication releases the movement.
Source: Idaho Driver's Handbook — Traffic Signals
8. A solid white line along the edge of an Idaho roadway carries a bicycle insignia. What does that marking establish?
Correct answer: A lane designated for bicycle traffic, ridden in the same direction as adjacent traffic
That striping sets the area aside for bicycle travel only, and riders using it must move in the same direction as the traffic beside them.
Source: Idaho Driver's Handbook — Pavement Markings
9. Two steady red lenses are lit on an Idaho pedestrian hybrid beacon. What is required of approaching drivers?
Correct answer: Come to a complete stop at the stop line
Steady reds on the beacon call for a complete halt at the stop line, exactly as a red traffic signal would.
Source: Idaho Driver's Handbook — Pedestrian Crossings
10. At an Idaho pedestrian hybrid beacon, the two red lenses begin flashing alternately. What must a driver do?
Correct answer: Stop, give way to anyone in the crosswalk, and proceed once it is clear
The alternating flash means you stop first, let anyone still inside the crosswalk finish, and then continue once the crossing is empty.
Source: Idaho Driver's Handbook — Pedestrian Crossings
11. What is a "doghouse" signal head used for at an Idaho intersection?
Correct answer: Managing protected left turns, with its yellow showing that the protected phase is ending
That cluster of lenses is the arrangement most often installed to run protected left turns, and when its yellow lights up it is telling drivers that the protected left-turn phase is finishing.
Source: Idaho Driver's Handbook — Traffic Signals
12. You have a green circular light and are waiting in a left-turn lane in Idaho. What is required?
Correct answer: Give way to oncoming traffic and to pedestrians in the crosswalk before turning
A round green is a permissive indication, so a left turn from that lane may only be completed after oncoming vehicles and crosswalk users have been let through.
Source: Idaho Driver's Handbook — Traffic Signals
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