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 the function of an "application pressure gauge"?
2.
What is a modulating control valve?
3.
What is the purpose of a front-brake limiting valve?
4.
To test the tractor protection valve, the engine needs to be:
5.
On large buses low pressure warning devices usually signal at ______.
6.
You should check trailer height before connecting a converted dolly to a second or third trailer. The trailer height is right when:
7.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
8.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
9.
When driving doubles or triples in adverse or slippery weather conditions, all of the following are true except:
10.
A safety valve that releases air _______.
11.
What is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer?
12.
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?
13.
Before you can supply air to the air tanks of a second trailer you need to:
14.
A danger of a malfunctioning tractor protection valve is:
15.
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
16.
To apply the parking brakes, you should _______.
17.
Water and oil _______.
18.
What affects the stopping distance for air brakes?
19.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
20.
If the malfunction lamp stays on after the bulb check, __________.