Free CDL Quiz

What can happen if glad hand connections are not properly sealed?

a.The engine will not start
b.Air leaks that can reduce braking performance or cause brake failure
c.The trailer lights will not work
d.The fifth wheel will not lock

Explanation

Improperly sealed glad hand connections cause air leaks in the brake system. This can lead to reduced air pressure, poor braking performance, and potentially brake failure. Always check that glad hand seals are in good condition and connections are secure.

← Back to CDL Air Brakes Test #2

Related Questions

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 Air Brakes 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 →