- Updated for January 2025
- Based on 2025 MS commercial driver's license manual
Free MS CDL Double/Triple Trailers Practice Test 2025
From the scenic Gulf Coast to the rolling hills, forests, and open farmlands of the Delta, you will see incredible diversity as you drive through Mississippi. Since you’re here, you must be considering adding the Double/Triple Trailers endorsement to your Mississippi 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 new world of career opportunities and income-producing marketability. More on that point in a moment. The main hurdle is a 20-question multiple-choice knowledge test. To pass, you’ll need a score of 80%, which means getting 16 correct answers. After passing, you’ll receive the “T” endorsement on your CDL, authorizing you to pull two or three trailers (where allowed) (Mississippi CDL Handbook 2025).
As you drive through Mississippi, you’ll see historic small towns, agriculture, and of course the Mississippi River, but what you won’t see are 18-year-olds with the “T” endorsement. In the Magnolia State, you must be 21 or older to add this certification to your CDL, and even with a Double/Triple Trailers endorsement, you’re only allowed to pull double trailers. Rest assured, though, double trailers are often used throughout Mississippi for the transport of agricultural products, timber and wood, petrochemicals and industrial products, construction materials, and seafood from the Gulf Coast fishing industry. By now, you’re probably wondering, “Great! How can I best prepare for the test?”
With a sea of information online, it’s easy to drown in it all. That’s why a systematic, focused approach is key —and that’s exactly what you’ll get with our online Mississippi CDL Double/Triple Trailers practice test. With our test, you’ll receive instant, detailed feedback on each answer in real time instead of being overwhelmed with a host of end-of-test feedback. Up to date as of January 2025, it includes 20 multiple-choice questions that resemble what you will face at the DPS on your test day!
Once you’ve prepared, practiced with our free tests, and feel confident, simply apply at the DPS. You’ll show up with your documents, pay the fee, pass the official test, and immediately open your career to more opportunities.
Looking for other Mississippi-based CDL endorsements? Find tons of valuable information and practice tests here.
- 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 MS DPS 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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