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Idaho Class D Knowledge Practice Test
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Passing target: 85% (34/40)
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A large truck moves left as it begins a right turn. What should you do?
At a broad intersection, a long eastbound tractor-trailer B has moved left within the eastbound approach to prepare for a wide right turn. Blue A is behind it in the right lane. A curved curb borders the inside of the upcoming turn.
Correct answer: Stay back; do not squeeze by on its right
Why
Large vehicles may need extra lane width for a sharp turn; entering the space on the right can trap your vehicle under the trailer.
Verified against Idaho Driver’s Handbook, July 2026 · Truck swinging left to turn right · p. 106
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