- Updated for January 2025
- Based on 2025 IN commercial driver's license manual
Free IN CDL Double/Triple Trailers Practice Test 2025
If you’re preparing to add the Double/Triple Trailers endorsement to your Indiana Commercial Driver’s License (CDL), the main challenge is passing a 20-question multiple-choice knowledge test. You’ll need a score of 80% (16 correct answers) to get this endorsement. Once you’re certified, the “T” endorsement on your CDL authorizes you to pull two or three trailers (where laws allow) and drive combination vehicles that require this added expertise (Indiana CDL Handbook 2025).
In the “Hoosier State,” even with a Double/Triple Trailers endorsement, you’re only allowed to pull double trailers. But make no mistake, earning this endorsement not only elevates your credibility in the transport industry but also dramatically increases your job prospects and earning potential. Double trailers are often used throughout the Indiana for the transport of construction equipment, heavy machinery, and building materials for construction sites. Additionally, with this certification you can participate in cross-docking operations in Indiana logistics hubs. You may be saying to yourself, “This sounds incredible! But how can I best prepare for the test?”
There’s plenty of online information out there, but sifting through it can get overwhelming fast. What you need is a systematic, focused approach. That’s exactly what our online practice test offers. Updated as of January 2025, it includes 20 multiple-choice questions that resemble what you will face at the BMV on your test day!
With our online Indiana CDL Doubles/Triples practice test, you’ll receive instant, detailed feedback on your answers. If you answer incorrectly, you’ll immediately see why a different response is correct. Gone are the days of receiving an onslaught of feedback on multiple categories clumped together at the end of a test. Our real time approach aids in mental retention and solidifies the content as you go.
In Indiana, you only need to pass the knowledge test to add the “T” endorsement to your Class A or Class B CDL. There is no additional driving test. Once you’ve prepared, practiced with our free tests, and feel confident, simply apply at the BMV. Bring your documents, pay the appropriate fee, and pass the test to officially add the endorsement.
Looking for other Indiana-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 IN 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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