- Updated for January 2025
- Based on 2025 NY commercial driver's license manual
Free NY CDL Double/Triple Trailers Practice Test 2025
Whether you are interested in driving in the urban areas of New York or the open expanse of its rural landscapes, you’re certain to appreciate the variety of scenery and terrain in the state. Enhancing your New York Commercial Driver’s License (CDL) with a Doubles/Triples Trailers (T) endorsement is an incredible way to increase your marketability and earning potential in the transport industry! The main requirement is passing a 20-question multiple-choice knowledge test with a score of 80% (16 correct answers). That’s really all there is to it. Since this is an addition to your CDL, you’ve already done the heavy lifting of the skills test. 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) (New York CDL Handbook 2025).
In the Empire State, you must be at least 21 years of age to add this certification to your CDL. This age requirement is federally mandated for interstate transport, so you’ve likely seen this hurdle before. It’s important to note that, even with a Doubles/Triples Trailers (T) endorsement, you’re only allowed to pull double trailers in New York. That having been said, double trailers are often used throughout New York for the transport of consumer goods, agricultural products (upstate New York is well known for its dairy and apple farms), construction materials, manufactured goods, and recyclables and waste. By this point, you’re probably saying, “Great! But how can I best prepare for the test?”
Face it! It’s exhausting looking at all the information online. What you need is a systematic, focused approach —and that’s exactly what we offer. Up to date as of January 2025, it includes 20 multiple-choice questions that resemble what you will face at the DMV on your test day!
As a bonus, while you work through our online New York CDL Double/Triple Trailers practice test, you’ll receive immediate feedback on each answer as you go. Remember: You only need to pass the official knowledge test. Once you’ve prepared, practiced with our free tests, and feel ready, simply apply at the DMV. Then, bring your documents, pay the fee, and pass with flying colors.
Looking for other New York-based CDL endorsements? Find tons of valuable information and practice tests here: https://driving-tests.org/new-york/#cdltests
- 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 NY DMV 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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