CDL · Doubles and triples
Which of these best describes safe driving with doubles or triples?
Correct answer: Take extra care in bad weather and in the mountains, and leave more following distance than in a smaller vehicle.
Answer options
- ATake extra care in bad weather and in the mountains, but keep the same following distance as in a smaller vehicle.
- BTake extra care in bad weather and in the mountains, and leave more following distance than in a smaller vehicle. Correct
- CDrive as you would with one trailer in bad weather and in the mountains, but leave more following distance than in a smaller vehicle.
Why
Multiple trailers are harder to control on slick roads and steep grades and need more room to stop, so you must be especially careful in bad weather and mountain driving and also allow extra following distance. Both habits are needed, not just one.
About this question
Topic: Doubles and triples License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
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This question is part of Pulling Doubles and Triples (24 questions). Take the full set and check your score.
Practice Pulling Doubles and TriplesMore questions from Pulling Doubles and Triples
- To begin training as a triple-trailer driver, federal rules say you must first have:
- In a set of triples, which position is safest for the lightest trailer?
- Your 100-foot double-trailer rig is traveling 50 mph on a dry road and visibility is good. What is the smallest following gap, in seconds, you should leave behind the vehicle ahead?
- During normal driving, which control applies the trailer brakes on a double or triple combination?
- Which unit is most likely to roll over because of the crack-the-whip effect?
- Which statement about making sudden steering moves with a double or triple trailer combination is accurate?
- What kind of parking space is best for a set of doubles or triples?
- In a B-train (B-double), at how many points can the combination pivot?
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