Free Colorado CDL Double/Triple Trailers Practice Test 2023

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 2021 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
What is the "cut-in" pressure for most air compressor governors?
What should you do when the low air pressure warning comes on?
Which is true when checking air flow to all trailers?
What is the purpose of a front-brake limiting valve?
The most efficient way to drive down a long grade is to ________.
When testing the coupling of the double trailer, the landing gears of the rear trailer should be:
Brake linings should not be _______.
When uncoupling twin trailers you should park:
At 55 mph on dry pavement, the air brake lag distance is how many feet?
You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
Before you can supply air to the air tanks of a second trailer you need to:
What distinguishes a wedge brake from other types of brakes?
If the air compressor has its own oil supply you should do what before driving?
Why should air tanks be drained completely?
Typically, air storage tanks hold enough air to allow the brakes to be used _______ even if the compressor stops working.
When you make an emergency stop, you should _________.
Why should you drain water from compressed air tanks?
In dual-air systems the pressure should build to _______.
Drivers of doubles and triples must take into greater account:
The pintle hook should never be unlocked when: