Free North Carolina CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the North Carolina CDL double/triple trailer endorsement test, make sure to know it! Our NC CDL Test has the same questions as the real exam which is based on the NC 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 North Carolina 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 NC commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NC CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is the function of an "application pressure gauge"?
2.
What is a modulating control valve?
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.
The converter dolly air tank drain valve on coupled double/triple trailers should be:
5.
Which of these statements about the handling of doubles and triples is true?
6.
Brake drums should not have cracks longer than what length?
7.
A front brake limiting valve ______.
8.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
9.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
10.
During normal operation, the brakes of the double/triple trailer are controlled by:
11.
When driving doubles or triples in adverse or slippery weather conditions, all of the following are true except:
12.
The most common type of foundation brake is?
13.
A danger of a malfunctioning tractor protection valve is:
14.
When the safety valve releases air this indicates ___________.
15.
When driving doubles or triples, for safer handling which trailer should be at the rear?
16.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
17.
Which of the following is the most common reason brakes fade?
18.
If you have manual transmission _________.
19.
Typically, air storage tanks hold enough air to allow the brakes to be used _______ even if the compressor stops working.
20.
When uncoupling the rear trailer, which of these should be done first?