Free Oregon CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the Oregon CDL double/triple trailer endorsement test, make sure to know it! Our Oregon CDL Practice Test has the same questions as the real exam which is based on the Oregon 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 Oregon 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 OR commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
OR 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.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
4.
If air supply drops when driving, the tractor protection valve ________.
5.
When coupling, correct trailer height should:
6.
To test the tractor protection valve, the engine needs to be:
7.
The air compressor governor stops air from pumping when it reaches the "cut-out" level or around generally _________.
8.
You will test that the trailer service brakes are working by:
9.
The converter dolly air tank drain valve on coupled double/triple trailers should be:
10.
In terms of stability, doubles and triples are:
11.
Which of these statements about the handling of doubles and triples is true?
12.
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?
13.
A safety valve that releases air _______.
14.
During a normal drive, the spring brakes are held back by _____.
15.
Why should you check the brake adjustment often?
16.
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?
17.
Typically, air storage tanks hold enough air to allow the brakes to be used _______ even if the compressor stops working.
18.
What is a front brake limiting valve?
19.
A safe speed on a curve for a smaller commercial vehicle:
20.
If the malfunction lamp stays on after the bulb check, __________.