South Dakota 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 South Dakota CDL Applicants

South Dakota's agricultural economy and growing wind energy sector rely on bulk and oversize freight operators. With cattle and livestock hauling, grain and agriculture, wind energy equipment driving much of the freight in South Dakota, the Class B to Class A Upgrade material below is the part of the South Dakota CDL that those employers screen for first.

The South Dakota Class B to A upgrade: Combination Vehicles and Air Brakes knowledge tests at South Dakota Driver Licensing Program, 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 Dakota Driver Licensing Program will schedule the test.

Where South Dakota drivers use this

  • Almost every Class A and Class B vehicle in South Dakota; skip this test and your CDL carries an L restriction
  • Cattle and livestock hauling: livestock trailers and refrigerated meat loads to packers and markets
  • Grain and agriculture: grain hoppers running from elevators to processors and export terminals
  • Wind energy equipment: oversize wind-turbine blade and tower transport
  • Tourism and hospitality supply: event, production, and resort supply freight

Most South Dakota CDL work runs the I-29, I-90 corridors and the Pierre 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 Dakota Driver Licensing Program. See the South Dakota CDL classes and South Dakota endorsements pages for the full licensing picture.

Common South Dakota questions

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

Who should get the South Dakota 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 South Dakota 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.

South Dakota 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.

South Dakota 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.

South Dakota Class B to Class A Upgrade Study Material

SD 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 SD 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 South Dakota CDL exam costs more than preparing.