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Everything’s bigger in Texas, including the demand for CDL drivers who hold the Doubles/Triples (T) Endorsement. With major roadways like I‑10, I‑35, and I‑20 running through the Lone Star State, companies like UPS Freight, FedEx Ground, and XPO Logistics regularly hire Texas drivers certified to pull double trailers. In large cities like Dallas, Houston, San Antonio, and Lubbock, this endorsement opens doors to higher-paying opportunities for CDL drivers.
To legally operate double and triple trailers, you must pass the Doubles/Triples Endorsement Test, which adds the T Endorsement to your Class A CDL. Our Free Texas CDL Doubles/Triples Endorsement Practice Tests are designed to mirror the official Texas Department of Public Safety (DMV) exam. With real-time feedback, hints within the system, and AI-based tools, our practice materials improve retention and speed learning far beyond what traditional study guides found elsewhere can offer.
The official Texas T Endorsement Exam consists of 20 multiple-choice questions. To pass, you must answer at least 16 questions (80%) correctly. If you fail, the Texas DMV requires a minimum one-business-day waiting period before you may retest. After three failed attempts, an additional testing fee will apply. Why not avoid these potential delays and added fees by using our free practice tests?
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Our practice test questions are based on the most recentTexas CDL Manual and emphasize coupling and uncoupling of multiple trailers, avoiding jackknifing and rollovers, controlling the “crack-the-whip” effect, steering and braking techniques for longer vehicle combinations, extended following distance, and inspections.
Because most double/triple trailers are equipped with air brakes, you’ll also need to pass the Texas CDL Air Brakes Knowledge Test. Passing this test removes the “L” or “Z” restriction from your license, which is essential if you plan to operate combination vehicles. You guessed it! We’ve got Texas Air Brakes Practice Tests too!
Texas also offers endorsements for Tank Vehicles (N), Hazardous Materials (H), the X Combo (N + H) Endorsement, Passenger (P), and School Bus (S). Each endorsement adds more value to your CDL, and ourTexas-specific practice tests guide you to passing these knowledge tests.
This Practice Test is one of two in our current Texas CDL Doubles and Triples series. Try our complete lineup of knowledge, endorsement, and air brake practice exams. All are specifically designed to meet Texas DMV requirements and ensure first-time success.
Driver’s Ed is - nobody wants to set foot inside the DMV. 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 2025 TX 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 DMV.
