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 is the function of an "application pressure gauge"?
2.
What is a modulating control valve?
3.
On large buses low pressure warning devices usually signal at ______.
4.
The most efficient way to drive down a long grade is to ________.
5.
When coupling or uncoupling, trailer or dolly wheel should always be:
6.
Which of these statements about quick steering movements and doubles/triples is true?
7.
During normal operation, the brakes of the double/triple trailer are controlled by:
8.
The trailer air supply control should pop out when the air pressure falls into the pressure range of:
9.
Automatic air tanks _______.
10.
How should the air leakage rate be tested?
11.
An air compressor can be cooled by _______.
12.
Before you can supply air to the air tanks of a second trailer you need to:
13.
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
14.
When testing the trailer emergency brakes, charge the system, pull out the trailer air supply control, and:
15.
Wedge brakes and disc brakes are ______ than s-cam brakes.
16.
When checking that air is flowing to all trailers,what is used to provide air to the supply lines?
17.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
18.
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 _________.
19.
In dual-air systems the pressure should build to _______.
20.
To position the converter dolly over short distances you can: