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With your Kentucky Class A CDL in hand, you are only a couple of steps from obtaining the T endorsement, which will give you the legal ability to operate double or triple trailer combinations. To do so, you must pass the Doubles and Triples Knowledge Test. Our Free Kentucky CDL Doubles and Triples Knowledge Practice Tests are specifically designed to mimic the official test and help ensure first-time success. Our practice tests offer real-time feedback, built-in hints, and AI tools to help you learn and retain information faster.
The official exam in Kentucky consists of 20 multiple-choice questions. In order to pass, you must answer at least 16 questions correctly (80%). If you fail, the Kentucky Division of Driver Licensing (DDL) requires a minimum one-business-day waiting period before retesting. After three failed attempts, a retesting fee applies. With the help of our practice tests, you can avoid delays and extra fees by passing on your first attempt.
All questions are based on material presented in the most recent Kentucky CDL Manual, the official source for your exam. With a focus on safe driving techniques to avoid rollovers, coupling and uncoupling procedures, techniques to prevent jackknifing, braking procedures for long combination vehicles, safe following distances, and trailer inspection procedures, our fully comprehensive practice tests include all the material needed to pass the exam.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Adding a T Endorsement in Kentucky can open doors to higher-paying driving jobs. With roadways like I-64, I-65, and I-75, and major hubs like Louisville, Lexington, Bowling Green, and Northern Kentucky, the demand for CDL drivers with T Endorsements is very high. Organizations like UPS, Schneider, and Old Dominion require doubles/triples drivers for their hauling needs.
Additionally, we recommend you earn endorsements like tank vehicles (N), hazardous materials (H), passenger (P), school bus (S), and X Combo (tank + hazmat). Each endorsement adds marketability to your CDL, and each requires a knowledge test (we offer practice tests for each).
Most double and triple trailer combinations use air brakes, so you’ll also need to pass the Air Brakes Knowledge Test to remove the “L” or “Z” restriction from your CDL. And yes, we offer Kentucky Air Brakes practice tests too!
This practice test is the second of two in our Kentucky CDL Doubles and Triples Knowledge Practice Test series. Check out Practice Test One and explore our full set of other endorsement and air brake practice tools, tailored to Kentucky DDL requirements.
Driver’s Ed is - nobody wants to set foot inside the KSP. That’s why millions of learners trust us for simple, visual, effective prep.
We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.
Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.
Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.
Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.
We build our practice questions from the current 2026 KY Driver Handbook and refine them using patterns recent test‑takers report.
Driver handbook • Knowledge‑test/permit overview • Fees & ID requirements • Office/appointment info
We mirror recurring themes (e.g., right‑of‑way traps, sign look‑alikes) and use similar distractors and wording styles.
We don’t collect or publish actual test items and we’re not affiliated with KSP.
