Free Indiana 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 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 2022 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
1.
The part of the combination vehicle most likely to turn over is the:
2.
What is the purpose of a modulating control valve?
3.
What is a modulating control valve?
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.
If air supply drops when driving, the tractor protection valve ________.
6.
The converter dolly air tank drain valve on coupled double/triple trailers should be:
7.
After coupling, the air shut-off valves at the back of the first trailer should be:
8.
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:
9.
Brake linings should not be _______.
10.
An air brake is made up of which of the following braking systems?
11.
When uncoupling twin trailers you should park:
12.
The air compressor should pump air starting at what psi?
13.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
14.
The most common type of foundation brake is?
15.
You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
16.
A danger of a malfunctioning tractor protection valve is:
17.
If you have manual transmission _________.
18.
A safe speed on a curve for a smaller commercial vehicle:
19.
Why is it so crucial to drain your vehicle's air tanks at the end of each day of driving?
20.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?