Why does a combination vehicle need more space to change lanes safely than a single straight truck?
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Correct answer to question 96 (Combination Vehicles): Its overall length means it takes longer to fully clear the lane it is leaving
Why
A tractor-trailer's greater overall length means it takes more time and road distance to completely clear one lane and settle into another, so extra space and time are needed for a safe lane change.
Updated: November 2026