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 is the purpose of a front-brake limiting valve?
2.
What is proper braking technique for drivers travelling down a hill or any other downgrade?
3.
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
4.
When driving a truck with more than one trailer, which trailer should be first behind the truck?
5.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
6.
How can you be sure you supplied air to a second trailer?
7.
When testing the coupling of the double trailer, the landing gears of the rear trailer should be:
8.
When connecting converter dolly to the front trailer, support gear should be:
9.
You will test that the trailer service brakes are working by:
10.
After coupling, the air shut-off valves at the back of the first trailer should be:
11.
To check if the converter dolly is securely coupled to the rear trailer you should:
12.
Brake linings should not be _______.
13.
On older vehicles, a low air pressure warning signal comes on at what psi?
14.
If your vehicle is not equipped with ABS, when you brake hard on a slippery surface what may occur?
15.
Where is compressed air stored?
16.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
17.
When testing the trailer emergency brakes, charge the system, pull out the trailer air supply control, and:
18.
To apply the parking brakes, you should _______.
19.
Why should you drain water from compressed air tanks?
20.
You are doing a walk around inspection of a double or triple trailer rig. You should be sure the converter dolly air tank drain valves are _____ and the pintle hook is _________.