🚛CDL Doubles/Triples — Question 16 of 20
What is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer?
Answer: A
The dolly tow bar may fly up.
The dolly tow bar may activate which may cause injury and will make it difficult to re-couple the trailer. Do not unlock the pintle hook with the dolly located under the rear trailer.
All choices
- AThe dolly tow bar may fly up.
- BThe trailer brakes will unlock.
- CNothing will happen until the rig rolls forward.
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
- Which of these statements about quick steering movements and doubles/triples is true?
- You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
- With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. When you do this, you should hear:
- The purpose of a converter dolly is to:
- Converter dollies: