🚛CDL Doubles/Triples — Question 2 of 20
Converter dollies:
Answer: C
Often do not have spring brakes.
Modern trailers and trucks have mechanical spring brakes. Trailers, dollies, and trucks built prior to 1975 were not required to have spring breaks and therefore may not have them.
All choices
- AUsually need a glad hand converter.
- BHave little braking power because they are small.
- COften do not have spring brakes.
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
- 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?
- Before you can supply air to the air tanks of a second trailer you need to: