- Updated for January 2025
- Based on 2025 OH commercial driver's license manual
Free OH CDL Double/Triple Trailers Practice Test 2025
From the flat farmlands of western Ohio, the rolling hills of the southeast, and the beautiful views of Lake Erie, you’re sure to encounter a rich display of diversity in both terrain and weather as you drive these roads. Since you’re here, you must be considering adding the Doubles/Triples Trailers (T) endorsement to your Ohio Commercial Driver’s License (CDL). Before we dive into what is needed to obtain this certification, just know at the outset that adding it to your commercial license opens a world of career opportunities and income-producing marketability. We’ll discuss that in more detail in a moment.
All you have to do is pass a 20-question multiple-choice knowledge test. To pass, you’ll need a score of 80% (16 correct answers). No additional skills test is 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) (Ohio CDL Handbook 2025).
In the Buckeye State, you must be at least 18 years of age to add this certification to your CDL; however, the age requirement to travel across state lines is federally mandated at 21 or older. While the Double-Triple Trailers endorsement technically qualifies you for both doubles and triples, you’re only permitted to tow double trailers in Ohio. That said, double trailers are often used throughout Ohio for the transport of automotive parts and vehicles (Detroit, Cleveland, and Toledo are major hubs), agricultural products like soybeans, dairy, and livestock, steel and industrial products, chemicals and plastics, and consumer goods and electronics. By this point, you’re probably saying, “Great! But how can I best prepare for the test?”
Our online Ohio CDL Double/Triple Trailers Endorsement practice test is designed to cut through the daunting amount of information you will find on the internet. Up to date as of January 2025, it includes 20 multiple-choice questions that resemble what you will face at the BMV on your test day! You’ll also receive instant feedback on each answer, allowing for real-time learning versus sorting through a mountain of feedback at the end.
When you’re ready and confident from practicing with our free tests, simply apply at the BMV. Bring your documents, pay the fee, pass with flying colors, and unlock a wealth of new opportunities.
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Triple-checked for accuracy
What you need to know
What to expect on the actual OH BMV exam
questions
correct answers to pass
passing score
Helpful links
List of questions (classic view)
- When you're pulling more than one trailer, which trailer should be the first one behind the tractor?
- Which of these statements about quick steering movements and doubles/triples is true?
- You are driving a 100-foot double trailer combination at 50 mph. The road is dry and visibility is good. You should keep at least ____ seconds of space ahead of you.
- Before connecting a converter dolly to a second or third trailer, you should check the height of the trailer. The trailer height is right if
- You are driving a 100-foot double trailer combination at 30 mph. The road is dry and visibility is good. You should keep at least ____ seconds of space ahead of you.
- With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. When you do this, you should hear
- Empty trucks
- Which of these statements about handling doubles and triples is true?
- Before you can supply air to the air tanks of a second trailer, you need to
- You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking, you should
- How can you be sure that you supplied air to a second trailer?
- What is likely to happen if the pintle hook is unlocked while the dolly is still under the second trailer?
- You want to hook your combination to a second trailer that does not have spring brakes. To do this without wheel chocks, you should
- Which of these statements about managing space to the sides is true?
- The crack-the-whip effect that troubles trucks with trailers is most likely to tip over
- You are visually checking the coupling of a converter dolly to the rear trailer. How much space should there be between the upper and lower fifth wheel?
- You are pulling doubles. A set of trailer wheels goes into a skid. Which of the following is most likely to occur?
- You are doing a walk-around inspection of a double or triple trailer rig. You should be sure that the converter dolly air tank drain valves are ______ and the pintle hook is _______.
- A converter dolly is
- A converter dolly consists of a ______ wheel and ________ axles.
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