Free Hawaii CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the CDL double/triple trailer endorsement test, make sure to know it! Our Hawaii Double/Triple Trailers Practice Test has the same questions as the real exam which is based on the Hawaii 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 CDL practice test 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 practice test an unlimited number of times to make sure you learn all the questions. Let’s try our Free Hawaii CDL practice test today and pass your CDL endorsement exam! Good luck and keep driving safely!

Our CDL practice tests:
Based on 2022 HI commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
HI 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 modulating control valve?
2.
What is the "cut-in" pressure for most air compressor governors?
3.
Automatic adjusters should ________.
4.
A low pressure warning signal could be __________.
5.
To check if the converter dolly is securely coupled to the rear trailer you should:
6.
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?
7.
Brake drums should not have cracks longer than what length?
8.
The air compressor should pump air starting at what psi?
9.
If you want to couple a second trailer to your combination vehicle, secure it by using:
10.
The tractor protection valve should pop out when air pressure falls to:
11.
Why should you check the brake adjustment often?
12.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
13.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
14.
Why should you never push the brake pedal down when the spring brakes are on?
15.
Why do some air brake systems have an alcohol evaporator?
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.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
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: