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Doubles & Triples Practice Question 36

TDoubles & Triples · Question 36

When a triple combination encounters a steep grade, you should:

• AStay in highest gear
• BChoose a low gear before descending and use snub braking, retarder permitting
• CBrake continuously
• DUse the trailer hand valve

Correct answer: B. Choose a low gear before descending and use snub braking, retarder permitting

Why: Pre-pick a gear and use snub braking technique to keep brakes from overheating. Engine retarder helps but turn off on slick roads.

How this question fits the Doubles/Triples test

Each additional articulation point multiplies rearward amplification. A driver pulling triples must steer earlier, brake sooner, and inspect twice as much equipment as a single-trailer driver.

Study technique for this topic

Learn the correct trailer placement order by weight, the procedure for converting a single to a double, and the special inspection items unique to converter dollies and pintle hook assemblies.

Related Doubles/Triples practice questions

• Q3. The heaviest trailer in a doubles or triples combination should be:
• Q16. When checking a converter dolly's brakes you should:
• Q29. When approaching an exit ramp with triples, you should:
• Q43. When a trailer in a multi-trailer combo experiences a flat tire, the driver should:
• Q56. When triples encounter a low overhead clearance:

Continue your CDL preparation

The Doubles & Triples portion of the CDL knowledge exam covers more than this single question. Use this site's full Doubles & Triples 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.