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 proper braking technique for drivers travelling down a hill or any other downgrade?
2.
If air supply drops when driving, the tractor protection valve ________.
3.
To check if the converter dolly is securely coupled to the rear trailer you should:
4.
Brake linings should not be _______.
5.
You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:
6.
An air brake is made up of which of the following braking systems?
7.
The increased likelihood of doubles and triples turning over is called:
8.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
9.
If the dolly has spring brakes, release them with:
10.
The trailer air supply control should pop out when the air pressure falls into the pressure range of:
11.
The most common type of foundation brake is?
12.
If you want to couple a second trailer to your combination vehicle, secure it by using:
13.
After coupling the converter dolly to the first trailer, the pintle hook should be:
14.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
15.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
16.
Why should you never leave your vehicle unattended without applying the parking brakes?
17.
When you make an emergency stop, you should _________.
18.
Which of the following factors explains why the total stopping distance for air brakes is longer than that for hydraulic brakes?
19.
You can test whether the trailer air system is charged by:
20.
When inspecting doubles and triples shut-off valves, which of the following is true?