🚛CDL Doubles/Triples — Question 6 of 20
Which trailer is most affected by the crack-the-whip, resulting in a rollover?
Answer: A
The rear trailer
The rear trailer of a triple is 3.5x more likely to rollover than the other trailers. The crack-the-whip effect causes any movements at the tractor to be compounded at the last trailer.
All choices
- AThe rear trailer
- BThe front trailer
- CThe middle trailer of a triple
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
- Before you can supply air to the air tanks of a second trailer you need to:
- When driving a truck with more than one trailer, which trailer should be first behind the truck?
- When pulling multiple trailers, where should the heaviest trailer be located?
- To check if the converter dolly is securely coupled to the rear trailer you should:
- How many axles may be found on a converter dolly?