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ELDT365 › Class B to A Upgrade › How to upgrade from Class B to Class A

How to upgrade from Class B to Class A

To upgrade a Class B CDL to a Class A you must complete the FMCSA Class B to A upgrade ELDT theory with a registered provider, do behind-the-wheel training in a tractor-trailer, and pass the Class A skills test. The upgrade theory is shorter than full Class A because it only covers combination vehicles; it takes about 30 minutes at ELDT365 for $20.
Updated October 2026 · ELDT365, listed on the FMCSA Training Provider Registry

Why the upgrade has its own curriculum

49 CFR part 380, appendix C is the Class B to A upgrade curriculum. It assumes you already know the basics from your Class B and focuses on what changes with a trailer: coupling and uncoupling, combination vehicle inspection, air brake systems across units, off-tracking, and the handling differences of a long, heavy combination.

The steps

  1. Complete the upgrade theory with a registered provider. ELDT365 files it to the registry when you finish.
  2. Get a Class A learner permit by passing the combination vehicles knowledge test (and air brakes if you carry that restriction).
  3. Behind-the-wheel training in a tractor-trailer with a registered school or employer.
  4. Pass the Class A skills test: pre-trip on a combination, backing maneuvers, road test.
Class B to A Upgrade Online, English and Spanish, filed to the FMCSA registry the moment you finish. $20 Start nowSee the course

Time and cost

Theory is about 30 minutes. Upgrade BTW programs are shorter than full Class A, often 1 to 2 weeks and $1,500 to $3,500, and many carriers run upgrade programs for their Class B drivers at no cost.

Questions drivers ask

Do I have to redo the full Class A theory?

No. The FMCSA created a separate, shorter upgrade curriculum for Class B holders. That is what ELDT365 provides.

I had a Class B before 2022. Do I need ELDT to upgrade?

Yes. The upgrade to Class A is a new class of license, and ELDT applies to it regardless of when you got the Class B.

Can I keep my endorsements?

Endorsements carry over to the new license, though some states retest hazmat.

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