Free CDL Quiz

What should you check regarding the glad hands before starting a trip with doubles or triples?

a.That they are a matching color
b.That they are properly connected with no air leaks and the rubber seals are not damaged
c.That they are brand new
d.That they are disconnected for safety

Explanation

Before every trip, check that all glad hand connections between units are properly sealed and secure with no air leaks. Damaged rubber seals must be replaced. Air leaks at glad hands can cause gradual loss of braking in rear trailers.

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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 Double/Triple Endorsement Test #2 section. Practice with more questions from this category to build confidence before taking the official DMV test.

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