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 should you do when the low air pressure warning comes on?
2.
What is the purpose of a front-brake limiting valve?
3.
You are driving a 100-foot truck with double trailers at 30 mph. The road is dry, and visibility is good. You should keep at least ______ seconds of space ahead of you.
4.
With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. When you do this, you should hear:
5.
The increased likelihood of doubles and triples turning over is called:
6.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
7.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
8.
The air compressor should pump air starting at what psi?
9.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
10.
Air tanks need to be drained ______.
11.
How do you check the low pressure warning signal?
12.
When inspecting the shut-off valves on doubles and triples, all of the following is true except:
13.
What distinguishes a wedge brake from other types of brakes?
14.
When you need to apply more pressure to help your brakes work normally effectively, this means that your brakes are fading. Which of the following can cause fading brakes?
15.
Why should air tanks be drained completely?
16.
If the air compressor does not have its own oil supply, how is it lubricated?
17.
Water and oil _______.
18.
Why should you never push the brake pedal down when the spring brakes are on?
19.
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 _________.
20.
The pintle hook should never be unlocked when: