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Idaho Class D Knowledge Practice Test
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Passing target: 85% (34/40)
Traffic Signals & Road MarkingsStandalone practice
You have not started passing. What do double solid yellow centerlines normally prohibit?
A and B approach in opposite directions beside double solid yellow lines.
Correct answer: Crossing the lines to pass a vehicle
Why
Do not begin a pass across double solid yellow centerlines. A safe left turn into or out of a driveway or business entrance may cross them. Idaho also has a narrow rule for safely completing a pass started before a no-passing zone; that does not allow starting a pass here.
Verified against Idaho Driver’s Handbook, July 2026 · Double solid yellow centerlines · p. 58
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