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 a front-brake limiting valve?
2.
What is proper braking technique for drivers travelling down a hill or any other downgrade?
3.
You are driving a 100-foot truck with double trailers at 30 mph. The road is dry, and visibility is good. You should keep at least ______ seconds of space ahead of you.
4.
When connecting converter dolly to the front trailer, support gear should be:
5.
The converter dolly air tank drain valve on coupled double/triple trailers should be:
6.
After coupling, the air shut-off valves at the back of the first trailer should be:
7.
Automatic adjusters should ________.
8.
The increased likelihood of doubles and triples turning over is called:
9.
A front brake limiting valve ______.
10.
Before you can supply air to the air tanks of a second trailer you need to:
11.
If the air compressor has its own oil supply you should do what before driving?
12.
It's important that a warning signal comes on before the air pressure in the tank falls below _______.
13.
Why should the air hoses connected to the brake chambers be checked?
14.
When you make an emergency stop, you should _________.
15.
When performing the controlled braking method for an emergency stop, you are _________.
16.
Where are the brake drums located?
17.
Vehicles with air brakes have pressure gauges connected to the _______.
18.
When inspecting doubles and triples shut-off valves, which of the following is true?
19.
When uncoupling the rear trailer, which of these should be done first?
20.
A visual inspection after coupling should show that: