Free Illinois 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 Illinois CDL Practice Test has the same questions as the real exam which is based on the Illinois 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 Illinois 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 IL commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
IL 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 the function of a stop light switch?
3.
When coupling, correct trailer height should:
4.
The most efficient way to drive down a long grade is to ________.
5.
You will test that the trailer service brakes are working by:
6.
On large buses low pressure warning devices usually signal at ______.
7.
How often should alcohol containers be checked during cold weather?
8.
On older vehicles, a low air pressure warning signal comes on at what psi?
9.
Brake linings should not be _______.
10.
You should check trailer height before connecting a converted dolly to a second or third trailer. The trailer height is right when:
11.
Which of these statements about quick steering movements and doubles/triples is true?
12.
Air tanks need to be drained ______.
13.
When driving doubles or triples in adverse or slippery weather conditions, all of the following are true except:
14.
You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
15.
What distinguishes a wedge brake from other types of brakes?
16.
If your vehicle is not equipped with ABS, when you brake hard on a slippery surface what may occur?
17.
When driving doubles or triples, for safer handling which trailer should be at the rear?
18.
Why should you never push the brake pedal down when the spring brakes are on?
19.
Why do some air brake systems have an alcohol evaporator?
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?