Free Delaware CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the Delaware CDL double/triple trailer endorsement test, make sure to know it! Our Delaware CDL Practice test has the same questions as the real exam which is based on the Delaware CDL manual. It covers most of the subject areas on the Double/Triple Trailers Test such as pulling double and triple trailers, the risk of rollover, managing space, and special considerations when hauling multiple trailers. In addition, each question has a detailed explanation that will help you understand the concept and answer future questions about it correctly. If you don't get the pass right away, you can take this CDL practice test an unlimited number of times to make sure you learn all the questions. Let’s try our Free Delaware CDL Double/Triple Trailers Practice Test today and pass your CDL endorsement exam! Good luck and keep driving safely!

Our CDL practice tests:
Based on 2022 DE commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
DE CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is the purpose of a modulating control valve?
2.
The most efficient way to drive down a long grade is to ________.
3.
Air brakes take longer to stop than hydraulic brakes because _______.
4.
In terms of stability, doubles and triples are:
5.
How do air-operated disc brakes work?
6.
When you turn with the tractor/triple trailer combination, the wheels that off-track (cheat) the most are:
7.
Automatic adjusters should ________.
8.
With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. When you do this, you should hear:
9.
A front brake limiting valve ______.
10.
During normal operation, the brakes of the double/triple trailer are controlled by:
11.
An air compressor can be cooled by _______.
12.
When the safety valve releases air this indicates ___________.
13.
What distinguishes a wedge brake from other types of brakes?
14.
Which of the following is the most common reason brakes fade?
15.
If you have manual transmission _________.
16.
Typically, air storage tanks hold enough air to allow the brakes to be used _______ even if the compressor stops working.
17.
When performing the controlled braking method for an emergency stop, you are _________.
18.
Why should you never push the brake pedal down when the spring brakes are on?
19.
Why is it so crucial to drain your vehicle's air tanks at the end of each day of driving?
20.
A visual inspection after coupling should show that: