Free NJ CDL Double/Triple Trailers Practice Test 2026

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 2026).

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?”