Free Indiana 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 Indiana CDL Practice Test has the same questions as the real exam which is based on the Indiana 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 Indiana 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 IN commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
IN CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
What is the purpose of a front-brake limiting valve?
In terms of stability, doubles and triples are:
On large buses low pressure warning devices usually signal at ______.
When testing the coupling of the double trailer, the landing gears of the rear trailer should be:
You will test that the trailer service brakes are working by:
The braking power of the spring brakes ______.
Brake drums should not have cracks longer than what length?
The trailer air supply control should pop out when the air pressure falls into the pressure range of:
An air compressor can be cooled by _______.
If you want to couple a second trailer to your combination vehicle, secure it by using:
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
Where is compressed air stored?
Wedge brakes and disc brakes are ______ than s-cam brakes.
What is a front brake limiting valve?
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 _________.
In dual-air systems the pressure should build to _______.
If the malfunction lamp stays on after the bulb check, __________.
Why should you not drive your vehicle if the air pressure does not build up quickly enough?
When uncoupling the rear trailer, which of these should be done first?
A visual inspection after coupling should show that: