Free Idaho CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the Idaho CDL double/triple trailer endorsement test, make sure to know it! Our Idaho CDL practice test has the same questions as the real exam which is based on the Idaho 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 Idaho 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 ID commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
ID 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 modulating control valve?
2.
To test the tractor protection valve, the engine needs to be:
3.
How do air-operated disc brakes work?
4.
In terms of stability, doubles and triples are:
5.
Brake linings should not be _______.
6.
You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:
7.
An air brake is made up of which of the following braking systems?
8.
Automatic air tanks _______.
9.
How should the air leakage rate be tested?
10.
You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
11.
Pushing the brake pedal down when the spring brakes are on could _________.
12.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
13.
If your vehicle is not equipped with ABS, when you brake hard on a slippery surface what may occur?
14.
When testing the trailer emergency brakes, charge the system, pull out the trailer air supply control, and:
15.
Which of the following is the most common reason brakes fade?
16.
Why should air tanks be drained completely?
17.
What is a front brake limiting valve?
18.
What affects the stopping distance for air brakes?
19.
To position the converter dolly over short distances you can:
20.
A visual inspection after coupling should show that: