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Combination Vehicles Practice Question 17

Required for Class ACombination Vehicles · Question 17

Cargo loaded too far to one side will:

• AHave no effect
• BMake the trailer prone to rollover and uneven tire wear
• CImprove handling
• DIncrease fuel economy

Correct answer: B. Make the trailer prone to rollover and uneven tire wear

Why: Side-to-side imbalance shifts more weight to one side's tires and increases rollover risk in turns toward the heavier side. Distribute loads evenly.

How this question fits the Combination test

Articulated vehicles fail in unique ways: trailer swing under braking, rearward amplification under steering, and jackknife under loss of traction. Combination Vehicle knowledge is required for any Class A applicant under 49 CFR 383.111.

Study technique for this topic

Walk through the coupling sequence verbally until it's second nature. Know the safe-rolling rearward amplification factor, the difference between trailer service brakes and parking brakes, and what creates the conditions for a tractor jackknife.

Related Combination practice questions

• Q32. When climbing a long uphill grade with a heavy load, you should:
• Q45. Cargo securement requirements depend on:
• Q58. When making a long left turn at an intersection, you should:
• Q7. The trailer's landing gear should be:
• Q21. The fifth wheel should be greased:

Continue your CDL preparation

The Combination Vehicles portion of the CDL knowledge exam covers more than this single question. Use this site's full Combination Vehicles bank to drill every topic, then test yourself with one of our state-specific practice sets to confirm you are ready for the actual DMV exam in your state. Always check your state's CDL handbook for any local addenda before the test day.

If you are still building your overall CDL foundation, start with the General Knowledge bank — every CDL applicant must pass it — and then work outward to the endorsements you plan to add.