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View All Plans- Updated for May 2025
- Based on 2025 KS commercial driver's license manual
Free KS CDL Double/Triple Trailers Practice Test 2025
Want to pull doubles or triples in your truck driving career? Doubles and triples are specialized combination vehicles, so you must obtain a Class A CDL. To do this, pass the General Knowledge test and the Combination knowledge test. Class A combination vehicles are typically equipped with air brakes, so you should also pass the Air Brakes knowledge test. Then you must pass a skills test in such a vehicle.
Next, to drive combination vehicles with multiple trailers, you must obtain a Double/Triple (T) endorsement on your Class A CDL. To get this endorsement, you must pass the Double/Triple knowledge test. This test covers such topics as safe handling, air brakes on doubles and triples, coupling and uncoupling, pre-trip inspections, rollovers, and trailer sway. (However, no special skills test is required for this endorsement.)
All these knowledge tests are based on the official Kansas CDL manual (Kansas CDL Handbook 2025). You probably read much of it already as you studied for your CDL and perhaps some other endorsements. We offer tools to complement the official manual with intensive training. We have created five Kansas Doubles and Triples Endorsement Practice Tests, of which this practice test is the first. This practice test is based on Chapter 7 (Doubles and Triples) of the official CDL manual, just like the official Double/Triple knowledge test. It’s up to date as of May 2025. The 20 multiple-choice practice questions and answers on this practice test address such topics as air lines, converter dollies, coupling, following distance, rearward amplification, and rollovers.
Our AI Assistant can give you a hint if you get stuck on a question or an immediate explanation of the correct answer if you still miss the question. There’s no time limit; take all the time you need to learn the material covered by this practice test. Not satisfied with your final score? You can retake this practice test as often as you wish until you’ve mastered all the material.
In Kansas, the agricultural, logistics, and manufacturing sectors depend heavily on double-trailer configurations to transport cargo. The state is Long Combination Vehicle (LCV) friendly. Besides double pup trailers, Kansas allows Rocky Mountain Doubles (one full-size trailer followed by one pup trailer), Turnpike Doubles (two full-size trailers), and even Triple Pup Trailers on designated routes. Yet few US drivers have the Double/Triple endorsement and specialized training required to operate such vehicles, so those who do are in high demand. Nationwide, they can earn $10,000 to $30,000 more per year (depending on the type of LCV) than drivers of single-trailer vehicles.
- 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 KS DMV exam
questions
correct answers to pass
passing score
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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