Free California CDL Double/Triple Trailers Practice Test 2023

Do you know how to pair double or triple trailers? If you are planning to take the California CDL double/triple trailer endorsement test, make sure to know it! Our California CDL practice test has the same questions as the real exam which is based on the California CDL Handbook. It covers most of the subject areas on the California 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 California 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 2021 CA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
CA CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is a modulating control valve?
2.
Automatic slack adjusters ________.
3.
The air compressor governor stops air from pumping when it reaches the "cut-out" level or around generally _________.
4.
If air supply drops when driving, the tractor protection valve ________.
5.
How do air-operated disc brakes work?
6.
The most efficient way to drive down a long grade is to ________.
7.
Air brakes take longer to stop than hydraulic brakes because _______.
8.
In terms of stability, doubles and triples are:
9.
Which of these statements about quick steering movements and doubles/triples is true?
10.
During normal operation, the brakes of the double/triple trailer are controlled by:
11.
What distinguishes a wedge brake from other types of brakes?
12.
After coupling the converter dolly to the first trailer, the pintle hook should be:
13.
Where is compressed air stored?
14.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
15.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
16.
When checking that air is flowing to all trailers, what is used to provide air to the supply lines?
17.
If you have manual transmission _________.
18.
Why do some air brake systems have an alcohol evaporator?
19.
The last step to uncouple a converter dolly is:
20.
Drivers of doubles and triples must take into greater account: