# Free Delaware CDL Double/Triple Trailers Practice Test 2023

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 2021 DE commercial driver's license manual
Perfect for first-time, renewal applicants
DE CDL Double/Triple Trailers Test format:
20 questions
80% passing score
List of questions
1.
What should you do when the low air pressure warning comes on?
2.
What is the function of a stop light switch?
3.
4.
How can you be sure you supplied air to a second trailer?
5.
When coupling, correct trailer height should:
6.
When driving a truck with more than one trailer, which trailer should be first behind the truck?
7.
How often should alcohol containers be checked during cold weather?
8.
The air compressor should pump air starting at what psi?
9.
Pushing the brake pedal down when the spring brakes are on could _________.
10.
The tractor protection valve should pop out when air pressure falls to:
11.
Why should you check the brake adjustment often?
12.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
13.
If your vehicle is not equipped with ABS, when you brake hard on a slippery surface what may occur?
14.
When driving doubles or triples, for safer handling which trailer should be at the rear?
15.
What is a front brake limiting valve?
16.
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 _________.
17.
Where are the brake drums located?
18.
The last step to uncouple a converter dolly is _______.
19.
When uncoupling the rear trailer, which of these should be done first?
20.
A converter dolly is used: