CDL · Doubles and triples
In a set of triples, which position is safest for the lightest trailer?
Correct answer: At the back, in the last position.
Answer options
- AAt the back, in the last position. Correct
- BIn the middle position.
- CIn front, right behind the tractor.
Why
For the safest handling, the most heavily loaded trailer goes right behind the tractor and the lightest goes at the rear. The rear trailer feels the strongest crack-the-whip effect and is the one most likely to overturn after a sudden lane change.
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 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
- Which of these best describes safe driving with doubles or triples?
- During normal driving, which control applies the trailer brakes on a double or triple combination?
- To begin training as a triple-trailer driver, federal rules say you must first have:
- Which statement about making sudden steering moves with a double or triple trailer combination is accurate?
- 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?
- In a B-train (B-double), at how many points can the combination pivot?
- Which unit is most likely to roll over because of the crack-the-whip effect?
- Compared with driving a smaller vehicle, what does pulling doubles or triples require of you?
Practice on your phone.
Practice here in your browser, or use the app with the same questions and explanations. It's free on the App Store.