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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
Study now
List of questions
1.
The part of the combination vehicle most likely to turn over is the:
2.
What is the function of an "application pressure gauge"?
3.
What is the purpose of an antilock braking system (ABS)?
4.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
5.
You will test that the trailer service brakes are working by:
6.
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:
7.
To check if the converter dolly is securely coupled to the rear trailer you should:
8.
When you turn with the tractor/triple trailer combination, the wheels that off-track (cheat) the most are:
9.
When coupling or uncoupling, trailer or dolly wheel should always be:
10.
The trailer air supply control should pop out when the air pressure falls into the pressure range of:
11.
When driving doubles or triples in adverse or slippery weather conditions, all of the following are true, EXCEPT:
12.
The most common type of foundation brake is?
13.
During a normal drive, the spring brakes are held back by _____.
14.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
15.
When driving doubles or triples, for safer handling which trailer should be at the rear?
16.
Why should you never leave your vehicle unattended without applying the parking brakes?
17.
Which of the following is the most common reason brakes fade?
18.
Why should the air hoses connected to the brake chambers be checked?
19.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
20.
If the malfunction lamp stays on after the bulb check, __________.
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