StateCDLRequirements.com

Class A CDL (2026): What It Covers & Tests

A Class A CDL is the license for tractor-trailers and other combination rigs — and it's the most versatile CDL you can hold. Here's exactly what it covers, the jobs it opens, the tests you'll take, and why so many drivers start here.

Quick answer

What it is
The CDL for combination vehicles — a power unit plus a heavy towed trailer
Weight rule
GCWR ≥ 26,001 lb, and the towed unit(s) rated over 10,000 lb (49 CFR 383.91)
Typical jobs
Tractor-trailer / over-the-road (OTR), regional freight, flatbed, tanker, car hauling
Tests
General knowledge + air brakes + combination knowledge, then a skills test in a Class A rig
Best feature
Most versatile — with endorsements it steps down to Class B and C vehicles too

Requirements verified July 20, 2026 against FMCSA (49 CFR 383.91)

What a Class A CDL covers

Under federal rule 49 CFR 383.91, Class A is the group forcombination vehicles: a power unit towing one or more units, with a Gross Combination Weight Rating (GCWR) of26,001 lb or more, where the towed unit(s) have a combined Gross Vehicle Weight Rating over 10,000 lb. In plain terms, that's a truck pulling a heavy trailer.

Because of the step-down rule, a Class A holder can also operateClass B and Class C vehicles — with the right endorsements. That's why Class A is described as the most versatile CDL: it covers all three groups. (The CFR calls these "groups"; states brand them as "classes" — same thing.)

Example jobs and vehicles

Typical vehicles a Class A driver operates:

  • Tractor-trailer (semi) — dry van, reefer, flatbed
  • Tanker rigs (with the tanker endorsement)
  • Car-hauler and auto-transport trailers
  • Double and triple trailers (with the doubles/triples endorsement)

Common job types:

  • Over-the-road (OTR) long-haul freight across states
  • Regional routes that get you home more often
  • Dedicated and line-haul freight
  • Specialized hauling — flatbed, tanker, oversized (with endorsements)

The tests you take

To earn a Class A CDL you'll typically pass:

  • General knowledge — the core test every CDL applicant takes.
  • Air brakes — nearly all Class A rigs have air brakes; skip it and you get an air-brake restriction.
  • Combination vehicles — the knowledge test specific to coupling and pulling trailers.
  • Skills test — pre-trip inspection, basic vehicle control, and an on-road drive in a representative Class A vehicle.

Practice ahead of time with our freecombination practice test, plus general knowledgeand air brakes. Any endorsement you want — hazmat, tanker, doubles/triples — adds its own test.

Why Class A is the most versatile

No other class steps down to both of the others. With the correct endorsements a Class A driver can legally operate Class A, B, and C vehicles, which is why it opens the broadest set of driving jobs. If you're not sure whether you need it, compare the two most common choices on ourClass A vs Class B CDL page.

How to get started

First-time CDL applicants must complete Entry-Level Driver Training (ELDT) from a registered provider before the skills test. Walk through the full process on how to get a CDL, and budget with the CDL cost breakdown. For the bigger picture, start at the CDL classes hub.

Class A CDL FAQ

What can you drive with a Class A CDL?

A Class A CDL lets you drive combination vehicles rated at 26,001 lb or more where the towed unit is over 10,000 lb — think tractor-trailers. Because of the federal step-down rule, a Class A holder can also operate Class B and Class C vehicles, as long as they have the endorsements those vehicles require.

What tests do I take for a Class A CDL?

You take the general knowledge test that every CDL applicant takes, the air brakes test (nearly all Class A rigs have air brakes), and the combination vehicles knowledge test. Then you pass a skills test — pre-trip inspection, basic control, and a road test — in a representative Class A vehicle. Endorsements you want, like hazmat or tanker, add their own tests.

Why is a Class A CDL considered the most versatile?

It's the only class that steps down to both of the others. With the right endorsements a Class A driver can operate Class A, B, and C vehicles, which opens the widest range of trucking jobs — from over-the-road tractor-trailer work to local straight-truck driving.

Do I need ELDT for a first-time Class A CDL?

Yes. If this is your first CDL, you must complete Entry-Level Driver Training (ELDT) — theory plus behind-the-wheel — through a provider on the FMCSA Training Provider Registry before you can take the Class A skills test.

How much does a Class A CDL cost?

It depends heavily on your training path and state. Class A programs generally cost more than Class B because they involve combination-vehicle training and a longer road-skills component. See our CDL cost breakdown for realistic ranges from surveyed market data.

Official sources

Every requirement on this page traces to one of these official sources.