How should a driver approach a curve differently in a combination vehicle compared to a single unit truck?
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Correct answer to question 100 (Combination Vehicles): Reduce speed more before the curve, since the trailer can amplify the effects of taking a curve too fast
Why
A trailer following behind can amplify the forces of a curve taken too fast, increasing the risk of a rollover or jackknife, so reducing speed more than you might in a single unit is important.
Updated: November 2026