Maryland CDL General Knowledge Practice Test (MD) 2

4.9 out of 5 (116 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Are you ready to advance your commercial driving career in Maryland? Our Maryland CDL General Knowledge Practice Test is the perfect tool to prepare you for your CDL drivers license test in 2026! With 20 carefully crafted questions, this test mirrors the real CDL exam's structure and content, ensuring you have a comprehensive understanding of the necessary material. This second Maryland CDL practice test is an essential step in your preparation. It includes a variety of multiple-choice questions covering crucial topics such as pre-trip vehicle inspection, basic vehicle control, gear shifting, navigating hills and steep downgrades, communication with other road users, speed control, and drug and alcohol awareness. These topics are pivotal, regardless of whether you're aiming for a Class A or Class B license, or if you're planning to add endorsements to your license. Our Maryland CDL general knowledge practice tests are designed with your convenience and learning in mind. They are accessible through various platforms, including mobile, desktop, and mobile apps, allowing you to study anytime, anywhere. Each question is derived from the official CDL driver's manual, the same source used for the real Maryland MVA CDL test. This ensures that you're studying the most relevant and up-to-date information. After completing this Maryland CDL general knowledge practice test, you'll receive an end-of-test summary. This feedback is invaluable, as it highlights the areas where you need improvement. You'll see which permit test questions you answered incorrectly, along with the correct answers, enabling you to learn from your mistakes and improve your knowledge. Remember, the real 2026 Maryland CDL permit test will contain questions from the same topics, so mastering this CDL practice test will give you a solid foundation for the actual exam. Start practicing today and take a significant step towards achieving your commercial driving goals in Maryland!
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Sample Maryland CDL Test Questions - General Knowledge

Question 1

For cargo that can be inspected, when should you recheck it in addition to the required mileage and time intervals?

  1. A Only before beginning the trip
  2. B Whenever you stop for a driving break
  3. C Only when the cargo requires placards
  4. D Only after six hours of driving

Correct answer: B – Whenever you stop for a driving break

Federal rules require cargo inspection within the first 50 miles and reexamination after a duty-status change or after three hours or 150 miles, whichever occurs first. The Maryland manual instructs drivers to check again whenever they stop for a break. Limited exceptions cover sealed vehicles ordered not to be opened and loads arranged so inspection is impracticable.

Source: Maryland Commercial Driver’s License Manual — §§ 3.1.1–3.1.2, “After Starting Your Trip” and “Check Again as Needed”, 49 CFR § 392.9(b)(2)–(4) — Inspection of Cargo, Cargo Securement Devices and Systems

Question 2

Which sequence correctly describes stab braking?

  1. A Apply the brakes fully
  2. B Release the brakes when the wheels lock
  3. C Reapply fully after the wheels begin rolling
  4. D All of the above

Correct answer: D – All of the above

Stab braking begins by fully applying the brakes. If the wheels lock, release the brakes and wait until the wheels start rolling again before applying them fully once more. Reapplying too early keeps the wheels locked and prevents the vehicle from straightening out.

Source: Maryland Commercial Driver’s License Manual — § 2.17.2, “How to Stop Quickly and Safely”

Question 3

Under ideal conditions, what is the approximate minimum total stopping distance at 55 mph, before adding air-brake lag?

  1. A 216 feet
  2. B 300 feet
  3. C 419 feet
  4. D 550 feet

Correct answer: C – 419 feet

The Maryland CDL manual’s 55-mph example includes about 142 feet of perception distance, 61 feet of reaction distance, and 216 feet of braking distance. Together, these equal a minimum total stopping distance of approximately 419 feet under ideal conditions. Air-brake lag increases the distance further in a vehicle equipped with air brakes.

Source: Maryland Commercial Driver’s License Manual — § 2.6.1, “Speed and Stopping Distance”, Maryland Commercial Driver’s License Manual — § 5.4.4, “Stopping Distance”

Question 4

Which group of items should be checked from the front during a walk-around light inspection?

  1. A Fuel cap, rear tires, and mudflaps
  2. B Fifth wheel, air lines, and landing gear
  3. C Low- and high-beam headlights and front four-way flashers
  4. D Rear doors, taillights, and splash guards

Correct answer: C – Low- and high-beam headlights and front four-way flashers

At the front, verify that the low-beam headlights and both front four-way flashers work. Operate the dimmer switch and confirm that the high beams also work. Other portions of the walk-around inspection cover rear lights, coupling equipment, tires, and cargo-area components.

Source: Maryland Commercial Driver’s License Manual — Section 2, “Step 5: Do Walk-Around Inspection—General Inspection of the Lights”

Question 5

On a clear, dry road, traffic is moving steadily at 35 mph in a 55-mph zone. No other condition requires a lower speed. Which speed best matches the safe traffic flow?

  1. A 30 mph
  2. B 35 mph
  3. C 50 mph
  4. D 25 mph

Correct answer: B – 35 mph

In heavy or steady traffic, traveling with the flow is generally safer than moving substantially faster or slower. A driver may match the 35-mph traffic speed because it is below the posted limit and no condition requires a further reduction. The driver must still maintain a safe following distance and adjust for hazards.

Source: Maryland Commercial Driver’s License Manual — § 2.6.5, “Speed and Traffic Flow”

Question 6

As a person’s blood alcohol concentration rises, what generally happens?

  1. A Alcohol’s effects become weaker
  2. B The person always recognizes the increasing impairment
  3. C Impairment increases and driving becomes more dangerous
  4. D The body eliminates alcohol more quickly

Correct answer: C – Impairment increases and driving becomes more dangerous

As BAC rises, alcohol affects more of the brain. Judgment and self-control can be impaired before the drinker recognizes the problem, followed by increasing effects on vision, coordination, muscle control, and reaction time. These impairments increase the likelihood of serious driving errors and crashes.

Source: Maryland Commercial Driver’s License Manual — § 2.22.1, “Alcohol and the Brain”

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