Free Pennsylvania CDL Combination Vehicles Practice Test 2022

You have to pass the Pennsylvania CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good Pennsylvania CDL Practice Test source for your coming CDL test? You are in the right place. Our practice test is a great resource for beginners. The test is designed for you to have exactly the experience of the exam as you will be more familiar with both the test format and the subject. Our CDL practice test covers topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official PA CDL Manual so you can be sure that the information in our test is accurate and relevant to your examination. In addition, each question has a detailed explanation so that it is very useful for you to learn from your mistakes. Preparing well before test day with questions and content that we cover. Start with our Free Pennsylvania CDL Combination Vehicles Practice Test today and walk out with your endorsement!

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 Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
The air lines on a combination vehicle are often colored to prevent them from mixing up. The emergency line is _____, the service line is _________.
2.
After supplying air to the trailer, how should you check for crossed air lines?
3.
After the trailer has been coupled to the tractor, the tractor protection control valve should be placed in what position?
4.
To unlock the fifth wheel, the locking lever should be placed in the ______ position.
5.
Compared to a straight truck or bus, there are ______ things to inspect in combination vehicles.
6.
When you are uncoupling a loaded trailer, you should lower the landing gear until it:
7.
To help prevent rollover, keep the center of gravity of the load as low as possible, and:
8.
To stop other drivers from passing you on the right when turning wide:
9.
The emergency air line controls the emergency brakes on combination vehicles, and:
10.
Some of the points for inspecting the coupling include the following except:
11.
How much space should there be between the upper and lower fifth wheel?
12.
Crack-the-whip effect occurs when:
13.
You are coupling a tractor to a semitrailer and have backed up, but are not under it. What should you hook up before backing under?
14.
What will happen if the air lines are crossed when you hook up to an old trailer?
15.
The safety latch for the fifth wheel locking lever must be _____ for a coupling to be complete.
16.
When uncoupling the trailer, after you shut off the trailer air supply and lock the trailer brakes, you should:
17.
When driving a set of doubles, it is necessary to close which shut-off valve in the last trailer:
18.
A specific item to check on a sliding fifth wheel is:
19.
While checking if the trailer is securely coupled to the tractor, the landing gears should be:
20.
In case of landing gear failure while pulling out from under it, you should: