Free NE CDL Double/Triple Trailers Practice Test 2025

If you’re a Nebraska resident and want to pull doubles or triples, you’re in luck. Nebraska is a double- and triple-friendly state. Double pup trailers are legal nationwide, Nebraska included. However, the state also allows the following Long Combination Vehicles (LCVs) on designated routes, such as I-80: Rocky Mountain Doubles, Turnpike Doubles, and even Triples (three pup trailers). LCV drivers are in high demand because multiple trailers increase transportation efficiency, yet few truck drivers have the necessary endorsements and training to operate such vehicles.

If you want to drive LCVs, you should hold a Class A Commercial Driver’s License (CDL) and make sure you’re qualified to drive vehicles with air brakes. Next, pass the Double/Triple knowledge test to obtain a Double/Triple (T) endorsement on your Class A CDL. (Note that no special skills test is required for this endorsement.)

Nebraska also requires specialized training to operate Rocky Mountain Doubles, Turnpike Doubles, or Triples. This training includes knowledge training (which involves passing a special LCV knowledge test) and skills (behind-the-wheel) training. (Some commercial CDL schools in Nebraska offer such training.) Once you’ve completed this training, you’ll receive an LCV Driver Training Certificate.

The official Double/Triple knowledge test covers such topics as safe handling, air brakes on doubles and triples, coupling and uncoupling, emergency situations, and state and federal regulations on doubles and triples. This knowledge test is based on the official Nebraska CDL manual (Nebraska CDL Handbook 2025), especially Chapter 7: Doubles and Triples. You likely studied other chapters of this manual to pass other official knowledge tests. But before you go back to the manual once again, this time to study for the Double/Triple knowledge test, we would like to offer you a smarter approach. It works with the manual to ensure you’ll pass the Double/Triple knowledge test on your first try.

This Nebraska Doubles and Triples Endorsement Practice Test, the first of five we offer, is based on the official CDL manual, just like the official Double/Triple knowledge test. It’s up to date as of March 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.

If you need help answering a practice question, ask our AI Assistant to rephrase the question or give you a hint. You can also ask your own questions. If you still miss the question, the AI Assistant will immediately give you the correct answer and an accompanying explanation.