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Maryland CDL Class B to A Upgrade Study Material

Everything for upgrading a Maryland Class B CDL to Class A, in one place: Combination Vehicles, Air Brakes, Class B to A Upgrade. Each one has the official manual rewritten section by section with its diagrams, a quick review of what the test asks about, practice questions with every answer explained, and narrated audio for the drive. It settles the parts that catch people out, like how to spot a trailer skid before it gets away from you.

Maryland Class B to Class A Upgrade Study Material Overview

Upgrade prep for Class B CDL holders moving to Class A, including combination vehicles, coupling, air brakes, and HOS theory.

Class B to Class A Upgrade for Maryland CDL Applicants

Maryland anchors mid-Atlantic freight with the Port of Baltimore and heavy government and defense supply chain traffic. With port and container freight, government and defense logistics, food distribution driving much of the freight in Maryland, the Class B to Class A Upgrade material below is the part of the Maryland CDL that those employers screen for first.

The Maryland Class B to A upgrade: Combination Vehicles and Air Brakes knowledge tests at Maryland Motor Vehicle Administration, then a Class A skills test. Since February 2022, ELDT theory and behind-the-wheel training must also be logged with an FMCSA-registered provider before Maryland Motor Vehicle Administration will schedule the test.

Where Maryland drivers use this

  • Almost every Class A and Class B vehicle in Maryland; skip this test and your CDL carries an L restriction
  • Port and container freight: container drayage between the ports and inland rail yards
  • Government and defense logistics: defense and government logistics contractors
  • Food distribution: regional and over-the-road distribution runs for grocery, retail, and e-commerce freight
  • Port and container freight: container drayage between the ports, rail ramps, and warehouses

Most Maryland CDL work runs the I-95, I-70, I-270 corridors and the Annapolis area, so the examples in the practice questions lean on the vehicles and loads you will see there.

Testing, appointments, and fees are handled by Maryland Motor Vehicle Administration. See the Maryland CDL classes and Maryland endorsements pages for the full licensing picture.

Common Maryland questions

Is this Class B to Class A Upgrade material specific to Maryland?
Yes. The knowledge test content is federal (49 CFR 383), so the questions apply in Maryland, and this page adds Maryland details: where you test (Maryland Motor Vehicle Administration), which Maryland industries use this license, and the Maryland corridors the examples are drawn from.
Where do I take the Class B to Class A Upgrade knowledge test in Maryland?
Knowledge tests are given by Maryland Motor Vehicle Administration. Bring your Maryland driver license, proof of residency, and your medical certificate; most Maryland offices require an appointment for CDL testing.
How long do I have to study the Maryland Class B to Class A Upgrade material?
Access lasts 120 days from purchase, and you can take 180 or 365 days instead at checkout. That is enough to study, take the practice tests, and pass at Maryland Motor Vehicle Administration with time to spare. Retakes in Maryland are allowed after a short wait, so a second attempt is covered too.

Who should get the Maryland Class B to Class A Upgrade Study Material

Already hold a Class B and being asked to pull trailers? Moving up to Class A means passing Combination Vehicles and Air Brakes. This program covers both, plus the upgrade theory.

Topics Covered for Maryland Class B to Class A Upgrade Study Material

Combination Vehicle Dynamics

Upgrading from Class B to Class A means operating vehicles with fundamentally different handling. Off-tracking, rearward amplification, and trailer swing all require new driving habits. The Combination Vehicles written test focuses on these differences compared to single heavy vehicles.

Coupling and Uncoupling Procedure

Correctly connecting a tractor to a trailer is a critical Class A skill tested both on the written exam and during the skills test. This module covers the exact coupling sequence that examiners expect to observe during the pre-trip exercise.

Air Line Connections

Class A combination vehicles use service and emergency air lines between the tractor and trailer that Class B drivers have not typically operated. You will learn how to connect them correctly, perform pressure checks, and identify warning signs of failure.

Maryland CDL Trailer and Coupling Inspection

Adding a trailer to your pre-trip inspection means covering the coupling area, fifth wheel, air connections, trailer brakes, and landing gear in sequence. The Class A skills test expects you to demonstrate all of these additional inspection points.

Maryland CDL Class A Test Readiness

The Class A upgrade requires passing the Combination Vehicles written knowledge test plus completing a new skills test on a Class A vehicle. This section prepares you for the content differences, scoring criteria, and what Class A evaluators assess differently from Class B.

Maryland Class B to Class A Upgrade Study Material

MD Class B to Class A Upgrade Study Material Includes

  • Combination Vehicles
  • Air Brakes
  • Class B to A Upgrade Theory

$39.85$37.95

You save $1.90 vs. buying the MD CDL test prep study material separately

Study Material Access Duration

120, 180, 365 days of access · No subscription

No subscription, no auto-renewal: 120 days of access included, or extend to 180 or 365 days at checkout.

Failing your Maryland CDL exam costs more than preparing.