Maryland CDL Class B Practice Test (MD) 3

4.9 out of 5 (77 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Are you aiming for a Class B CDL in Maryland? Our third Maryland CDL practice test is the perfect tool for your preparation. Tailored for Class B applicants, this test offers a comprehensive assessment experience. It comprises 20 carefully selected 2026 CDL test questions, with a pass mark of 80%. Covering a vast array of topics, the MVA practice test dives into essential areas such as pre-trip vehicle inspection, basic vehicle control, gear shifting (including downshifting), handling hills and steep downgrades, effective communication with fellow drivers, speed control, and drug and alcohol awareness. Our Maryland DMV CDL practice test stands out due to its dynamic question sets. Each time you take the practice test, you'll encounter a different set of CDL questions. This approach ensures you gain a deep understanding of all aspects of the CDL written test, beyond just memorizing answers. The test's online availability makes it conveniently accessible from various devices - whether you're on a desktop at home or using a mobile app on the go. Moreover, we pride ourselves on offering the most current and relevant study material. Our content is frequently updated to reflect the latest driving laws and regulations, ensuring you're always studying up-to-date information. The 2026 version of this class B CDL practice test incorporates the newest guidelines and rules, keeping you ahead in your preparation. Whether you're a seasoned driver brushing up on your skills or a new applicant starting your CDL journey, our Maryland CDL Class B Practice Test is an invaluable resource for your success in 2026!
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Sample Maryland CDL Test Questions - General Knowledge

Question 1

If your commercial vehicle catches fire, you should pull into a service station because firefighting equipment may be available there.

  1. A TRUE
  2. B FALSE

Correct answer: B – FALSE

Do not take a burning vehicle into a service station. Pull off the road and stop in an open area away from buildings, trees, brush, vehicles, and other materials that could ignite. Notify emergency services and provide your location, then follow appropriate procedures to keep the fire from spreading.

Source: Maryland Commercial Driver’s License Manual — § 2.21.3, “Fire Fighting”

Question 2

What does a DO NOT PASS sign require?

This sign indicates that the driver should _____________.
  1. A Pass only when traveling faster than the vehicle ahead
  2. B Do not pass within the posted zone except where law specifically permits
  3. C Come to a complete stop before proceeding
  4. D Complete any pass as quickly as possible

Correct answer: B – Do not pass within the posted zone except where law specifically permits

The DO NOT PASS sign marks or reinforces a no-passing zone. In Maryland, drivers must obey the posted restriction and generally may not drive left of the roadway within that zone. The law contains limited exceptions, including a safe left turn and the minimum lawful adjustment needed to pass a bicycle at a safe distance.

Source: Manual on Uniform Traffic Control Devices, 11th ed. — § 2B.36, “DO NOT PASS Sign (R4-1)”, Md. Code, Transp. § 21-307(a)(2), (b), (d) — Driving on Left in No-Passing Zone

Question 3

Which combination of habits helps prevent aggressive driving?

  1. A Giving other drivers the benefit of the doubt
  2. B Slowing down and maintaining reasonable following distance
  3. C Remaining cautious and courteous
  4. D All of the above

Correct answer: D – All of the above

Drivers can reduce aggression by managing stress, allowing enough travel time, and accepting unavoidable delays. Giving others the benefit of the doubt helps prevent personal reactions to their mistakes. Slowing down, keeping reasonable following distance, and remaining cautious and courteous also reduce conflict and crash risk.

Source: Maryland Commercial Driver’s License Manual — § 2.10.2, “Don’t Be an Aggressive Driver”

Question 4

Which items deserve extra attention during a winter vehicle inspection?

  1. A Coolant level and antifreeze protection
  2. B Heating and defrosting equipment
  3. C Windshield wipers, washers, and washer fluid
  4. D All of the above

Correct answer: D – All of the above

The Maryland CDL manual calls for checking coolant and antifreeze protection before winter operation. The defroster and heater must function properly, and the driver should know how to operate them. Wiper blades must be serviceable, the washers must work, and the reservoir should contain fluid suitable for the expected temperature.

Source: Maryland Commercial Driver’s License Manual — § 2.13.1, “Vehicle Checks”

Question 5

During a typical dual-air-system buildup test with standard-size tanks, which pressure increase should occur within 45 seconds?

  1. A From 85 to 100 psi
  2. B From 40 to 60 psi
  3. C From 60 to 80 psi
  4. D From 100 to 120 psi

Correct answer: A – From 85 to 100 psi

The Maryland CDL manual’s standard dual-system check calls for air pressure to rise from 85 to 100 psi within 45 seconds while the engine is running. Vehicles with larger-than-minimum air tanks may have an acceptable longer buildup time. Always compare the test result with the vehicle manufacturer’s specifications and correct a slow-buildup condition before driving.

Source: Maryland Commercial Driver’s License Manual — § 5.3, “Check Rate of Air Pressure Buildup”

Question 6

Under Maryland law, which operation can fall outside the CDL definition when all stated conditions are satisfied?

  1. A A farmer-controlled vehicle hauling farm products or supplies within 150 miles of the farm and not operating as a common or contract carrier
  2. B A qualifying fire or rescue emergency vehicle operated by a member or employee of the organization
  3. C A Department of Defense vehicle operated by qualifying military personnel in the listed circumstances
  4. D All of the above

Correct answer: D – All of the above

The statutory CDL definition excludes qualifying farmer-controlled vehicles used within 150 miles of the farm, specified fire or rescue emergency vehicles, and Department of Defense vehicles operated by listed military personnel. These are not blanket exemptions for every farm, emergency, or military vehicle. Both the vehicle and its operation must meet the applicable statutory conditions.

Source: Md. Code, Transp. § 16-803(c)(2) — Definitions

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