Free Oklahoma 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 Oklahoma CDL Practice Test has the same questions as the real exam which is based on the Oklahoma 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 Oklahoma 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 OK commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
OK 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 function of a stop light switch?
3.
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
4.
In terms of stability, doubles and triples are:
5.
To check if the converter dolly is securely coupled to the rear trailer you should:
6.
Automatic adjusters should ________.
7.
On older vehicles, a low air pressure warning signal comes on at what psi?
8.
An air brake is made up of which of the following braking systems?
9.
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?
10.
If the dolly has spring brakes, release them with:
11.
How should the air leakage rate be tested?
12.
A safety valve that releases air _______.
13.
Letting up on the brake pedal _______.
14.
If the air compressor has its own oil supply you should do what before driving?
15.
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
16.
Wedge brakes and disc brakes are ______ than s-cam brakes.
17.
Why should the air hoses connected to the brake chambers be checked?
18.
Where are the brake drums located?
19.
Vehicles with air brakes have pressure gauges connected to the _______.
20.
To position the converter dolly over short distances you can: