Free Maryland CDL Double/Triple Trailers Practice Test 2023

Do you know how to pair double or triple trailers? If you are planning to take the Maryland CDL double/triple trailer endorsement test, make sure to know it! Our Maryland CDL Practice Test has the same questions as the real exam which is based on the Maryland 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 Maryland 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 2021 MD commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MD CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
When coupling, correct trailer height should:
To test the tractor protection valve, the engine needs to be:
The converter dolly air tank drain valve on coupled double/triple trailers should be:
Air brakes take longer to stop than hydraulic brakes because _______.
The braking power of the spring brakes ______.
How often should alcohol containers be checked during cold weather?
The increased likelihood of doubles and triples turning over is called:
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
If you want to couple a second trailer to your combination vehicle, secure it by using:
Pushing the brake pedal down when the spring brakes are on could _________.
What distinguishes a wedge brake from other types of brakes?
Letting up on the brake pedal _______.
If the air compressor has its own oil supply you should do what before driving?
When the safety valve releases air this indicates ___________.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
Which of the following factors explains why the total stopping distance for air brakes is longer than that for hydraulic brakes?
Water and oil _______.
Why is it so crucial to drain your vehicle's air tanks at the end of each day of driving?
When uncoupling the rear trailer, which of these should be done first?
A converter dolly is used: