Free Maryland CDL Double/Triple Trailers Practice Test 2022

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 2022 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
1.
What should you do when the low air pressure warning comes on?
2.
You are driving a 100-foot truck with double trailers at 30 mph. The road is dry, and visibility is good. You should keep at least ______ seconds of space ahead of you.
3.
In terms of stability, doubles and triples are:
4.
You are driving a set of doubles and a set of trailer wheels goes into a skid. Which of these is most likely to occur?
5.
Brake drums should not have cracks longer than what length?
6.
Which of these statements about quick steering movements and doubles/triples is true?
7.
The service brake system ________.
8.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
9.
Air tanks need to be drained ______.
10.
You are visually checking the coupling of a converter dolly to the rear trailer. How much space should be between the upper and lower fifth wheel?
11.
The most common type of foundation brake is?
12.
Why should you check the brake adjustment often?
13.
When checking that air is flowing to all trailers,what is used to provide air to the supply lines?
14.
If the air compressor does not have its own oil supply, how is it lubricated?
15.
What does the air compressor governor control?
16.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
17.
Where are the brake drums located?
18.
To position the converter dolly over short distances you can:
19.
Vehicles with air brakes have pressure gauges connected to the _______.
20.
The last step to uncouple a converter dolly is: