Is this Class B to Class A Upgrade Program material specific to South Carolina?

Yes. The knowledge test content is federal (49 CFR 383), so the questions apply in South Carolina, and this page adds South Carolina details: where you test (South Carolina Department of Motor Vehicles), which South Carolina industries use this license, and the South Carolina corridors the examples are drawn from.

Where do I take the Class B to Class A Upgrade Program knowledge test in South Carolina?

Knowledge tests are given by South Carolina Department of Motor Vehicles. Bring your South Carolina driver license, proof of residency, and your medical certificate; most South Carolina offices require an appointment for CDL testing.

How long do I have to study the South Carolina Class B to Class A Upgrade Program material?

Access lasts 120 days from purchase, which is enough to study, take the practice tests, and pass at South Carolina Department of Motor Vehicles with time to spare. Retakes in South Carolina are allowed after a short wait, so a second attempt is covered too.

South Carolina Class B to Class A Upgrade Program

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 Program for South Carolina CDL Applicants

South Carolina's Port of Charleston and BMW manufacturing plant anchor strong CDL freight demand in the Southeast. With automotive manufacturing, port and container freight, tire and rubber manufacturing driving much of the freight in South Carolina, the Class B to Class A Upgrade Program material below is the part of the South Carolina CDL that those employers screen for first.

The South Carolina Class B to A upgrade: Combination Vehicles and Air Brakes knowledge tests at South Carolina Department of Motor Vehicles, 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 South Carolina Department of Motor Vehicles will schedule the test.

Where South Carolina drivers use this

Automotive manufacturing: just-in-time parts hauling between assembly plants and suppliers
Port and container freight: container drayage between the ports and inland rail yards
Tire and rubber manufacturing: dry-van and flatbed freight between manufacturers, suppliers, and distribution centers
Aerospace components: flatbed and step-deck loads of steel, lumber, and building materials
Automotive manufacturing: flatbed and step-deck loads of steel, lumber, and building materials

Most South Carolina CDL work runs the I-20, I-26, I-77 corridors and the Columbia 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 South Carolina Department of Motor Vehicles. See the South Carolina CDL classes and South Carolina endorsements pages for the full licensing picture.

Common South Carolina questions

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

When Is This Useful?

Helps drivers expand from heavy single vehicles into tractor-trailers and other combination vehicle work.

Who Is This For?

Current Class B CDL holders who need Class A authority for new job duties or equipment assignments.

Topics Covered

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.

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.

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.

Class B to Class A Upgrade Program

$37.95

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What's Included:

Combination Vehicles
Air Brakes
Class B to A Upgrade Theory