Maryland CDL Combination Test (MD) 2026

5 out of 5 (56 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Are you preparing for your Commercial Driver's License (CDL) combination vehicles endorsement in Maryland? Look no further than our Maryland practice permit test, designed to equip you with the knowledge and confidence needed to succeed. Our permit practice test includes a wide range of multiple-choice questions that cover crucial areas such as coupling and uncoupling, pre-trip inspections, driving techniques, backing and maneuvering, and air brake systems. Each Maryland MVA permit practice test consists of 20 questions, and you'll need to answer at least 16 correctly to pass. Understanding the increased stopping distances required for combination vehicles due to their greater weight is critical for maintaining safety on the road. Our Maryland learner's permit practice test ensures you grasp these essential concepts, preparing you to handle the unique challenges presented by larger, heavier vehicles. Safety and preparedness are at the forefront of our Maryland combination vehicle test. Accessibility is a key feature of our CDL combination practice test. Available online through mobile, desktop, and mobile apps, our DMV practice test is easily accessible for all aspiring commercial drivers. This flexibility allows you to study whenever and wherever it's convenient for you, making it a reliable and effective tool in your preparation arsenal. Unlike unreliable MVA test cheat sheets that promise shortcuts and often lack authenticity, our Maryland MVA permit practice test is a trustworthy study resource. Our questions are based on the official driver's manual managed and released by the state, ensuring that you're studying the right material. This means that if information isn't in the manual, it won't be on the real test, making our practice test a legal and dependable preparation method. Our combination CDL practice test provides a verified history of effectiveness, helping countless Maryland drivers achieve their CDL combination vehicle endorsement. By using our Maryland combination CDL test, you're opting for a proven method to ensure you're well-prepared for your test day. Prepare with confidence using our Maryland combination CDL test and set yourself on the path to success. Whether you're studying on your computer or your phone, our comprehensive and accessible practice test will help you master the necessary skills and knowledge to pass with flying colors.
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Sample Maryland Combination Test Questions

Question 1

After coupling a tractor and semitrailer, how should you test whether the connection is secure?

  1. A Accelerate rapidly from a stop
  2. B Make a sharp turn at low speed
  3. C Gently pull forward with the trailer brakes locked
  4. D Check the connection only through the mirrors

Correct answer: C – Gently pull forward with the trailer brakes locked

The Maryland coupling procedure calls for raising the landing gear slightly and gently pulling the tractor forward while the trailer brakes remain locked. Resistance confirms that the trailer is locked onto the tractor. This tug test is only one part of the check; the fifth-wheel jaws, locking lever, safety latch, and kingpin connection must also be visually inspected.

Source: Maryland Commercial Driver’s License Manual — § 6.4.1, “How to Couple or Uncouple Tractor-Semitrailers,” Step 11, “Check Connection for Security”

Question 2

How should the tractor be positioned before backing under a semitrailer?

  1. A Slightly toward the passenger side
  2. B With the kingpin aimed at one locking jaw
  3. C At an angle to improve the mirror view
  4. D Directly in front of and aligned with the trailer

Correct answer: D – Directly in front of and aligned with the trailer

Position the tractor directly in front of the trailer and use both outside mirrors to check alignment. Backing under a trailer at an angle can push the trailer sideways and damage its landing gear. Proper alignment also helps the kingpin enter the fifth wheel correctly when the tractor is backed slowly under the trailer.

Source: Maryland Commercial Driver’s License Manual — § 6.4.1, “How to Couple or Uncouple Tractor-Semitrailers,” Step 3, “Position Tractor”

Question 3

Which condition should you verify when connecting the trailer’s electrical cord?

  1. A The cord has enough slack to drag on the pavement
  2. B The cord is connected before the air lines
  3. C The plug is secured and the line is undamaged
  4. D The cord is wrapped tightly around the air lines

Correct answer: C – The plug is secured and the line is undamaged

The Maryland coupling procedure requires plugging the electrical cord into the trailer and fastening the safety catch. Inspect the electrical line for damage and route it where it will not contact moving vehicle parts. The combination-vehicle inspection also requires confirming that the electrical cord is firmly plugged in and secured.

Source: Maryland Commercial Driver’s License Manual — § 6.4.1, “How to Couple or Uncouple Tractor-Semitrailers,” Step 14, “Connect the Electrical Cord and Check Air-Lines”; § 6.5.1, “Additional Things to Check during a Walk-around Inspection”

Question 4

How should a combination vehicle be driven through turns to reduce rollover risk?

  1. A Slowly, with smooth steering
  2. B With steady acceleration through the turn
  3. C Using quick steering corrections
  4. D With the trailer hand valve applied

Correct answer: A – Slowly, with smooth steering

Slow down before entering a turn, then steer gently and smoothly. Combination vehicles can roll over when turns are taken too fast or when abrupt steering causes the trailer to swing. Smooth control is especially important because rearward amplification can cause a trailer to respond more sharply than the tractor to a sudden steering movement.

Source: Maryland Commercial Driver’s License Manual — § 6.1.2, “Steer Gently”

Question 5

Before driving, it is sufficient to raise the trailer landing gear only until it clears the pavement. True or false?

  1. A True
  2. B False

Correct answer: B – False

The landing gear must be raised completely before the vehicle is driven. Gear left partly down can catch on railroad tracks or other objects. After raising it, secure the crank handle and verify adequate clearance between the landing gear and tractor frame and between the tractor tires and the trailer nose.

Source: Maryland Commercial Driver’s License Manual — § 6.4.1, “How to Couple or Uncouple Tractor-Semitrailers,” Step 15, “Raise Front Trailer Supports (Landing Gear)”

Question 6

If the trailer begins to jackknife during a skid, should you apply the trailer hand valve to straighten the combination?

  1. A True
  2. B False

Correct answer: B – False

Do not use the trailer hand valve to straighten a jackknifing trailer. The trailer wheels are already locked and sliding, and additional trailer braking will not restore traction. Release the braking that caused the skid when it is safe to do so. Once the trailer wheels regain traction, the trailer can begin following the tractor again.

Source: Maryland Commercial Driver’s License Manual — § 6.1.5, “Prevent Trailer Skids”; § 6.2.1, “Trailer Hand Valve”

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