Free CDL Quiz

What can cause a trailer skid?

a.Under-inflated tires on the tractor
b.Locking up the trailer brakes by using too much brake pressure or having a malfunctioning brake system
c.Driving too slowly
d.Having too much weight on the trailer

Explanation

A trailer skid occurs when the trailer wheels lock up and lose traction. This can happen from excessive braking, a malfunctioning trailer brake system, or braking on slippery surfaces. When the trailer wheels lock, the trailer can swing sideways.

← Back to CDL Combination Test #2

Related Questions

What is the upper fifth wheel?What is the lower fifth wheel?What is the release handle on a fifth wheel used for?What is the trailer apron?Why is the fifth wheel greased?

About the CDL Exam

The CDL (Commercial Driver License) exam tests your knowledge of commercial driving rules, safety procedures, and vehicle operation. You must score 80% or higher to pass the written knowledge test. The exam covers general knowledge, air brakes, combination vehicles, and various endorsements.

This question is from the CDL Combination Test #2 section. Practice with more questions from this category to build confidence before taking the official DMV test.

Browse All Free CDL Practice Tests →