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Combination Vehicles Practice Question 54

Required for Class ACombination Vehicles · Question 54

When a passenger car cuts in front of you, you should:

• AHonk and tailgate
• BDrop back to restore safe following distance
• CBrake hard
• DSteer abruptly

Correct answer: B. Drop back to restore safe following distance

Why: Restore your space cushion calmly. Tailgating or hard braking creates risks for everyone, including the cutting-in driver.

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

• Q44. Glad hand color coding is required because:
• Q58. When making a long left turn at an intersection, you should:
• Q7. The trailer's landing gear should be:
• Q20. When checking trailer brakes via the hand valve, you should:
• Q33. When the trailer wheels lock during heavy braking, you should:

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.