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Free NJ CDL Double/Triple Trailers Practice Test 2025
Part of mandatory Entry-Level Driver Training Course Based on 2025 NJ commercial driver's license manualAvailable in EN, ES
20questions
4mistakes allowed
80%passing score
New Jersey has its own amazing attributes. And when combined with its proximity to major cities like New York and Philadelphia, you better believe adding a Double/Triple Trailers endorsement to your Commercial Driver’s License (CDL) will add an enormous amount of variety and income-producing marketability to your credentials. The main requirement is passing a 20-question multiple-choice knowledge test with a score of 80% (16 correct answers). That’s it! After passing, you’ll receive the “T” endorsement on your CDL, authorizing you to pull two or three trailers (where laws allow) (New Jersey CDL Handbook 2025).
In the Garden State, you only need to be 18 to add this certification to your CDL; however, you must be at least 21 to drive across state lines. Even with a Doubles/Triples Trailers endorsement, you’re only allowed to pull double trailers in New Jersey. However, double trailers are often used throughout New Jersey for the transport of pharmaceutical supplies (New Jersey is a major hub for medical supplies), food and beverages (New Jersey has more people per square mile than any other state!), consumer goods, electronics, and fruits and vegetables. Have I caught your attention? You may be saying to yourself, “Yes! How can I best prepare for the test?”
To put it mildly, the information available online is in no short supply. As such, studying for this endorsement can quickly become overwhelming. That’s why we’ve created a systematic, focused approach with our online New Jersey CDL Double/Triple Trailers practice test. Up to date as of January 2025, it includes 20 multiple-choice questions that resemble what you will face at the MVC on your test day!
Have you ever taken a practice test and received all the feedback at once at the end of the assessment? That’s information overload! With our practice test, you’ll receive immediate, thorough feedback on each answer. This real-time approach helps you solidify the content as you go. So, what are you waiting for? Once you’ve prepared, practiced with our free tests, and feel ready, simply apply at the MVC, bring your documents, pay the required fee, pass the official test, and watch as options (and profitability) open at your feet.
Looking for other New Jersey-based CDL endorsements? Find tons of valuable information and practice tests here.
Perfect for
- First-time NJ CDL and CLP applicants
- CDL holders adding endorsements
- NJ CDL renewal applicants
What to expect on the actual exam
| How many questions | 20 |
|---|---|
| How many correct answers to pass | 16 |
| Passing score | 80% |
Unlock all 1,500+ exam-like questions for New Jersey. Pass Guarantee
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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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