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  • Updated for December 2024
  • Based on 2024 UT commercial driver's license manual

Free UT CDL Double/Triple Trailers Practice Test 2024

Utah! Gorgeous, gorgeous Utah! From the Rocky Mountain regions and famous desert parks like Arches, Bryce Canyon, Canyonlands, Capitol Reef, and Zion (also called “The Mighty Five”) to its major urban areas like Salt Lake City, Utah has some of the most beautiful scenery this country has to offer. Expanding your resume with a Double/Triple Trailers (T) endorsement on your Utah Commercial Driver’s License (CDL) can immediately increase your job opportunities and earning potential. And the good news is that since you already have your CDL, you’ve done the heavy lifting! The remaining requirement is passing a 20-question multiple-choice knowledge test with a score of 80% (16 correct answers). That’s it! Once you pass this knowledge test, you’ll receive the “T” endorsement, granting you the ability to legally tow two or three trailers in authorized areas (Utah CDL Handbook 2024).

If you’re thinking about pulling double or triple trailers in the Beehive State, you must be at least 18 years of age. However, if you’re planning to cross state lines you’ll need to wait until you’re at least 21 years of age per federal law. This endorsement permits pulling doubles and triples, and on many roads in Utah, both configurations are allowed. Just don’t exceed 105 feet in length or a combined weight of 129,000 pounds! In Utah, double/triple trailers are often used for the transport of mining materials like copper, coal, and salt, industrial and manufacturing equipment, consumer goods and electronics (Salt Lake City is a major hub), and construction materials. From the rural areas, you’ll haul agricultural products like livestock, dairy, hay, and grains. Heard enough? Now let’s get you prepared!

Studying for this endorsement doesn’t have to be as overwhelming as you might think when you discover the huge amount of information available online. Our online Utah CDL Double/Triple Trailers practice test was created to match the format and types of questions you’ll face at the DMV without all the excess. With up-to-date (as of December 2024) multiple-choice questions that offer instant feedback on every answer, you’ll learn more efficiently than facing all of the feedback at one time at the end. What are you waiting for? Get ready, take your documents to the DMV, pay the fee to apply, and pass with flying colors.

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  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements

What you need to know

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.

What to expect on the actual UT DMV exam

20

questions

16

correct answers to pass

80%

passing score

List of questions (classic view)

  1. When you're pulling more than one trailer, which trailer should be the first one behind the tractor?
  2. Which of these statements about quick steering movements and doubles/triples is true?
  3. 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.
  4. 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
  5. 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.
  6. 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
  7. Empty trucks
  8. Which of these statements about handling doubles and triples is true?
  9. Before you can supply air to the air tanks of a second trailer, you need to
  10. You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking, you should
  11. How can you be sure that you supplied air to a second trailer?
  12. What is likely to happen if the pintle hook is unlocked while the dolly is still under the second trailer?
  13. You want to hook your combination to a second trailer that does not have spring brakes. To do this without wheel chocks, you should
  14. Which of these statements about managing space to the sides is true?
  15. The crack-the-whip effect that troubles trucks with trailers is most likely to tip over
  16. 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?
  17. You are pulling doubles. A set of trailer wheels goes into a skid. Which of the following is most likely to occur?
  18. 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 _______.
  19. A converter dolly is
  20. A converter dolly consists of a ______ wheel and ________ axles.
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