🚛CDL Doubles/Triples — Question 1 of 20
The purpose of a converter dolly is to:
Answer: A
provide a fifth wheel coupling to connect a second trailer to the first trailer
The tractor connects to the first trailer via the fifth wheel on the tractor. Additional trailers require a converter dolly to connect them to the first trailer.
All choices
- Aprovide a fifth wheel coupling to connect a second trailer to the first trailer
- Bcouple a tractor to a trailer
- Cprovide a conversion to the back of the tractor for different sized kingpins
CDL Doubles/Triples Test Info
Questions on Exam
20
Passing Score
80%
Time Limit
Typically 30 minutes; varies by testing location
The Doubles/Triples test content is federally standardized, so this question applies in every state. Age limits, fees, and testing procedures do vary — check your state's CDL requirements.
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More CDL Doubles/Triples Practice Questions
- The converter dolly air tank drain valve on coupled double/triple trailers should be:
- Crack-the-whip effect occurs when:
- Which of these statements about the handling of doubles and triples is true?
- Which trailer is most affected by the crack-the-whip, resulting in a rollover?
- Which statement is true regarding the coupling of a triple?