Practice 20 for CDL Exam learners in Alabama: 25 questions, explained answers, and a review routine.
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Question 1
1
When uncoupling a tractor from a semitrailer, why do drivers typically lower the trailer landing gear only partially onto firm ground before releasing the fifth wheel locking mechanism, and never uncouple on a soft or sloped surface if avoidable?
Question 2
2
In a set of triples, if the rearmost trailer begins to sway during an evasive steering maneuver, what is generally the safest driver response?
Question 3
3
A converter dolly's air lines and electrical connections must be checked at how many total coupling points in a standard set of doubles (tractor-trailer1-dolly-trailer2)?
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