Free California CDL Double/Triple Trailers Practice Test 2022

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 2022 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 the purpose of a modulating control valve?
2.
Which is true when checking air flow to all trailers?
3.
Automatic adjusters should ________.
4.
The braking power of the spring brakes ______.
5.
A low pressure warning signal could be __________.
6.
Brake linings should not be _______.
7.
If the dolly has spring brakes, release them with:
8.
You are visually checking the coupling of a converter dolly to the rear trailer. How much space should be between the upper and lower fifth wheel?
9.
What is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer?
10.
You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
11.
Before you can supply air to the air tanks of a second trailer you need to:
12.
If the air compressor has its own oil supply you should do what before driving?
13.
The tractor protection valve should pop out when air pressure falls to:
14.
Letting up on the brake pedal _______.
15.
Wedge brakes and disc brakes are ______ than s-cam brakes.
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.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
18.
Why should you drain water from compressed air tanks?
19.
When uncoupling the rear trailer, which of these should be done first?
20.
A visual inspection after coupling should show that: