CDL · Doubles and triples
Which statement about converter dollies is accurate?
Correct answer: Many of them are not equipped with spring brakes.
Answer options
- AMost of them require a glad hand converter.
- BTheir small size leaves them with very little braking power.
- CMany of them are not equipped with spring brakes. Correct
Why
Many converter dollies are built without spring brakes, so once uncoupled they may have nothing holding them in place. Before you leave a dolly, set its spring brakes if it has them or chock its wheels so it cannot roll away.
About this question
Topic: Doubles and triples License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of Coupling Doubles and Converter Dollies (28 questions). Take the full set and check your score.
Practice Coupling Doubles and Converter DolliesMore questions from Coupling Doubles and Converter Dollies
- What is the reason for moving a dolly clear of the rear trailer before releasing it from the lead trailer?
- The dolly is now hitched behind the first trailer, and the second trailer sits on the dolly's fifth wheel. What is the proper way to test this coupling?
- What should you use to hold the second trailer still before you couple it to the rest of the doubles combination?
- Uncoupling a set of triples starts with which step?
- Compared with an A-dolly, what is the main thing a B-dolly or C-dolly adds?
- Which description fits a converter dolly?
- In the official CDL manual, the section on doubles and triples generally explains coupling and uncoupling for which combinations?
- When you drop the rear trailer from a double combination, what should you do with the air shut-off valve at the back of the front trailer?
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