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.
What is the purpose of an antilock braking system (ABS)?
2.
What is proper braking technique for drivers travelling down a hill or any other downgrade?
3.
How can you be sure you supplied air to a second trailer?
4.
The most efficient way to drive down a long grade is to ________.
5.
You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:
6.
A front brake limiting valve ______.
7.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
8.
You are driving a set of doubles and a set of trailer wheels goes into a skid. Which of these is most likely to occur?
9.
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?
10.
During a normal drive, the spring brakes are held back by _____.
11.
The tractor protection valve should pop out when air pressure falls to:
12.
When the safety valve releases air this indicates ___________.
13.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
14.
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?
15.
Why should air tanks be drained completely?
16.
If the air compressor does not have its own oil supply, how is it lubricated?
17.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
18.
You can test whether the trailer air system is charged by:
19.
The last step to uncouple a converter dolly is:
20.
A converter dolly is used: