All your missed questions are saved
automatically for extra practice.
It's a practice test that's automatically made up of all your missed questions. Once you finish this test, you’ll be able to revisit your Challenge Bank™ to practice and sharpen your skills.
View All PlansAdding difficult questions to Challenge Bank™ is an exclusive Premium feature. Unlock access to 650+ exam-like questions, a Pass Guarantee, personalized study plans, and more.
View All Plans| 90-100 | => | 0% |
| 80-89 | => | 0% |
| 70-79 | => | 100% |
| 60-69 | => | 0% |
| <60% | => | 0% |
With a Maryland Class A CDL in hand, you’re just steps away from unlocking access to higher-paying jobs across the Mid-Atlantic. Whether you’re hauling on I‑95, I‑70, or I‑83 or navigating the busy roadways of Baltimore, Frederick, or the D.C. suburbs, the Doubles/Triples (T) Endorsement is your key to boosted pay and opportunities. Major carriers like FedEx, XPO, and Old Dominion often hire Maryland CDL drivers certified to pull multiple trailers.
To operate doubles (and triple trailers where allowed) legally, you must pass the Doubles and Triples (T) Endorsement Knowledge Test to add the T endorsement to your Class A CDL. There is a lot of material on the official test, so our Free Maryland CDL Doubles and Triples (T) Endorsement Knowledge Practice Tests are designed to match the format of the MVA official exam. We have also crafted our practice tests to offer real-time feedback, hints, and smart AI tools that accelerate your learning far beyond traditional study guides.
The official test is made up of 20 multiple-choice questions. You’ll need to answer 16 of them correctly (for a minimum score of 80%) in order to pass. If you fail, you must wait at least one business day to retest. After three failures, additional fees will apply. With only four missed questions allowed, it is vital that you are well prepared. Our experts have designed our practice tests so you can pass on your first try!
M.S., Chief Educational Researcher (ACES member)
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Our test questions are based on the latest Maryland CDL Manual so you won’t be surprised by new material not covered elsewhere. We cover coupling/uncoupling procedures for multi-trailer units, prevention of rollovers and jackknifing, the “crack-the-whip” effect and how to avoid it, braking and steering for long vehicle combinations, inspection procedures, and extended following distances. We will give you all the tools and know-how to pass!
Most double and triple trailer combinations use air brakes, so you’ll also need to pass the Maryland CDL Air Brakes Knowledge Test and a skills test in a vehicle with air brakes. We offer practice tests for that too!
Maryland CDL holders can further increase their versatility (and income!) by earning additional stackable endorsements, including (N) Tank Vehicles, (H) Hazardous Materials, (X) Tank + HazMat Combo, (P) Passenger, and (S) School Bus. We have Maryland-specific practice tests for each of these.
Explore our full lineup of knowledge, endorsement, and air brake tests, all designed to help you succeed the first time.
Driver’s Ed is - nobody wants to set foot inside the MVA. 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 MD 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 MVA.
