Free Pennsylvania 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 Pennsylvania CDL Practice Test has the same questions as the real exam which is based on the PA 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 Pennsylvania 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 PA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
PA 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.
What should you do when the low air pressure warning comes on?
4.
Which is true when checking air flow to all trailers?
5.
With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. When you do this, you should hear:
6.
To check if the converter dolly is securely coupled to the rear trailer you should:
7.
An air brake is made up of which of the following braking systems?
8.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
9.
A front brake limiting valve ______.
10.
Brake drums should not have cracks longer than what length?
11.
What is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer?
12.
The most common type of foundation brake is?
13.
Pushing the brake pedal down when the spring brakes are on could _________.
14.
When inspecting the shut-off valves on doubles and triples, all of the following is true except:
15.
The tractor protection valve should pop out when air pressure falls to:
16.
After coupling the converter dolly to the first trailer, the pintle hook should be:
17.
Why should air tanks be drained completely?
18.
If the air compressor does not have its own oil supply, how is it lubricated?
19.
When you make an emergency stop, you should _________.
20.
Vehicles with air brakes have pressure gauges connected to the _______.