Free Colorado CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the CDL double/triple trailer endorsement test, make sure to know it! Our Colorado CDL practice test has the same questions as the real exam which is based on the Colorado 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 Colorado 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 CO commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
CO CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
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 proper braking technique for drivers travelling down a hill or any other downgrade?
4.
You are driving a 100-foot truck with double trailers at 30 mph. The road is dry, and visibility is good. You should keep at least ______ seconds of space ahead of you.
5.
On large buses low pressure warning devices usually signal at ______.
6.
How often should alcohol containers be checked during cold weather?
7.
Brake drums should not have cracks longer than what length?
8.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
9.
Air tanks need to be drained ______.
10.
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?
11.
The most common type of foundation brake is?
12.
A safety valve that releases air _______.
13.
Pushing the brake pedal down when the spring brakes are on could _________.
14.
When inspecting the shut-off valves on doubles and triples, all of the following is true except:
15.
The tractor protection valve should pop out when air pressure falls to:
16.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
17.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
18.
Which of the following factors explains why the total stopping distance for air brakes is longer than that for hydraulic brakes?
19.
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 _________.
20.
Why is it so crucial to drain your vehicle's air tanks at the end of each day of driving?