Delaware Class B to A Upgrade Theory

Class B to A Upgrade Theory for Delaware CDL Applicants

Delaware handles heavy chemical and pharmaceutical freight along the busy I-95 Northeast corridor. With chemical and pharmaceutical manufacturing, port and container freight, food distribution driving much of the freight in Delaware, the Class B to A Upgrade Theory material below is the part of the Delaware CDL that those employers screen for first.

Upgrading from Class B to Class A in Delaware means passing the Combination Vehicles knowledge test at Delaware Division of Motor Vehicles (and Air Brakes if not already held), then a skills test in a Class A combination. This is the theory part.

Where Delaware drivers use this

• Port and container freight: container drayage between the ports, rail ramps, and warehouses
• Food distribution: regional and over-the-road tractor-trailer distribution runs
• Automotive parts: just-in-time parts loads between assembly plants and suppliers
• Chemical and pharmaceutical manufacturing: regional and over-the-road distribution runs for grocery, retail, and e-commerce freight
• Port and container freight: container drayage between the ports and inland rail yards

Most Delaware CDL work runs the I-95, I-295 corridors and the Dover area, so the examples in the practice questions lean on the vehicles and loads you will see there.

Delaware rules worth knowing

• Delaware DMV states its CDL manual covers CDL requirements, CDL procedures, testing requirements, and basic knowledge needed to obtain a CDL.
• Delaware DMV notes CDL renewals may only be completed within 30 days before expiration.
• Delaware began implementing the modernized CDL skills test at DMV locations on February 26, 2025.
• Delaware describes Class A by combination registered, actual, or GVWR over 26,000 pounds while towing a vehicle with registered, actual, or GVWR over 10,000 pounds.

Testing, appointments, and fees are handled by Delaware Division of Motor Vehicles. See the Delaware CDL classes and Delaware endorsements pages for the full licensing picture.

Common Delaware questions

Is this Class B to A Upgrade Theory material specific to Delaware?

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

Where do I take the Class B to A Upgrade Theory knowledge test in Delaware?

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

How long do I have to study the Delaware Class B to A Upgrade Theory material?

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