1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
All tests
/
 
 
 
 
 
Advertisement

Free PA CDL Double/Triple Trailers Practice Test 2025

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Based on 2025 PA commercial driver's license manual
  • Triple-checked for accuracy
  • Updated for September 2025

Looking to add the Double and Triple Trailers endorsement to your Pennsylvania Commercial Driver’s License (CDL)? Smart idea! This endorsement significantly expands your earning potential by permitting you to haul more diverse loads. And, whether driving through the Appalachian Mountains, or the farmland and natural resource areas of its state plateaus, you’ll see a good mix of terrain in Pennsylvania. To achieve this endorsement, you’ll need to pass a 20-question multiple-choice knowledge test with a score of 80% (16 correct answers). That’s it! For this addition to your CDL, a skills test (the hardest part) isn’t needed. Once you pass this knowledge test, you’ll receive the “T” endorsement on your CDL, authorizing you to pull two or three trailers (where allowed) (Pennsylvania CDL Handbook 2025).

While the minimum age requirement to travel across state lines is federally mandated to be 21, in the Keystone State, you need only be 18 years of age to add this certification to your CDL. So, there is some instant intrastate opportunity available to younger drivers. Even with a Double/Triple Trailers endorsement, triple trailers are not allowed in Pennsylvania. The good news is that double trailers are often used throughout Pennsylvania for the transport of steel and industrial products (Pittsburgh is a major hub), coal and natural gas in the western part of the state, agricultural products like mushrooms, dairy, poultry, and apples, consumer goods and electronics, and chemicals and pharmaceuticals (especially from the Philadelphia area). I know! This sounds incredible. But how can you best prepare for the test?

Staying focused can be tough due to the enormously daunting amount of information found online on this subject, but our online Pennsylvania CDL Double/Triple Trailers practice test methodically streamlines this experience. Up to date as of September 2025, the test features 20 multiple-choice questions reflecting what you will see at the DOT on your test day! Plus, with real-time feedback on each answer, you learn as you go versus the usual (and less effective) end-of-test corrections faced elsewhere.

You only need to pass the official knowledge test. After practicing with our free tests and building your confidence, it will be time to apply at the DOT. Just take your documents, pay the fee, pass the test, and restart your transport career on a whole new and improved level!

Pass the first time with Premium
PA commercial driver's license
  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Triple-checked for accuracy

What you need to know

4.56 out of 5 • 18 votes
6 min to complete
Available in EN and ES
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.

What to expect on the actual PA DOT exam

20

questions

16

correct answers to pass

80%

passing score

Are you in another state?

Your go-to, trusted source

Experience the Driving-Tests difference
Since our foundation in 2010, Driving-Tests.org has led the way in online driver's education, with over a decade of experience. Our dedicated experts, bringing together more than 50 years of collective expertise, have established us as the largest non-governmental organization in the U.S. solely focused on driver education. We go beyond the official manuals, offering unique interactive experiences and support like audio guides and an AI Assistant, to cater to different learning styles and needs.
Helping hundreds of thousands to ace their tests, our resources have earned a 4.7-star rating from over 14,500 reviews. Our goal is to make your path to becoming a confident driver as straightforward and effective as possible.
4.56/5
18 votes
Click a star to add your vote
Ask AI Coach
Hi there! I'm Officer Frank