Class A vs Class B CDL: Requirements and Which You Need (2026)

Quick Answer

A Class A CDL lets you drive combination vehicles with a gross combination weight rating (GCWR) of 26,001 pounds or more when the towed unit is rated over 10,000 pounds, such as tractor-trailers. A Class B CDL covers single vehicles rated 26,001 pounds or more, towing 10,000 pounds or less, such as dump trucks and box trucks. Class A also covers Class B and C vehicles.

Key Takeaways

• Class A (Group A) means a GCWR of 26,001+ lbs with a towed unit rated over 10,000 lbs, per 49 CFR 383.91.
• Class B (Group B) means a single vehicle with a GVWR of 26,001+ lbs, towing a trailer rated 10,000 lbs or less.
• Class C covers smaller vehicles built to carry 16 or more people (including the driver) or hauling placarded hazmat.
• A first Class A or B CDL, or a B-to-A upgrade, requires entry-level driver training (ELDT) from a provider on FMCSA's Training Provider Registry.
• You must hold your commercial learner's permit (CLP) for at least 14 days before you can take the CDL skills test.
• Interstate CDL drivers must be at least 21 under 49 CFR 391.11; the under-21 apprenticeship pilot ended November 7, 2025.

What is a CDL?

A commercial driver's license (CDL) is a state-issued license that lets you drive a commercial motor vehicle (CMV) as defined in 49 CFR 383.5. Federal rules call the types "groups"; your license shows them as Class A, B, or C.

Not every commercial truck needs a CDL. Most FMCSA safety rules start at 10,001 lbs for interstate vehicles (49 CFR 390.5), but the CDL requirement starts at 26,001 lbs, 16+ passengers, or placarded hazmat.

One detail people miss: the CMV definition in 383.5 uses the weight rating or the actual weight, whichever is greater. Load a truck rated 25,500 lbs to 27,000 lbs and you're in CDL territory.

What is a Class A CDL?

A Class A CDL (often called a "CDL A license") covers any combination of vehicles with a GCWR of 26,001 lbs or more, as long as the towed unit's GVWR is more than 10,000 lbs.

Typical Class A vehicles are tractor-trailers (dry van, reefer, flatbed, tanker), straight trucks pulling heavy trailers, and pickups pulling heavy goosenecks in hotshot work.

Class A applicants are tested on coupling, uncoupling, and combination-vehicle inspection (49 CFR 383.111(c)). Under 49 CFR 383.91(c), Class A also lets you drive Class B and C vehicles, as long as you hold any endorsements they require.

What is a Class B CDL?

A Class B CDL (you'll also see it written "CDL Class B") covers any single vehicle with a GVWR of 26,001 lbs or more. You can tow a trailer with it, but only if that trailer is rated 10,000 lbs or less.

Typical Class B vehicles are box trucks over 26,000 lbs, dump trucks, concrete mixers, garbage trucks, and city buses (with a P endorsement).

Class B also covers Class C vehicles with the right endorsements, but not tractor-trailers. Moving up takes Class A ELDT and a new skills test in a Class A vehicle.

Class A vs Class B vs Class C CDL: what's the difference?

Your skills test vehicle must represent the class you want, judged by its weight rating, not its loaded weight (49 CFR 383.133(c)(3)). Test in a Class B truck and you get a Class B license.

Which CDL class do you need?

Use the weight ratings on your truck and trailer labels.

1. Find the GVWR of your power unit and the GVWR of each trailer.
2. If the power unit alone is rated 26,001+ lbs and any trailer is 10,000 lbs or less, you need Class B.
3. Add the power unit and trailer ratings (or use the manufacturer's GCWR if it's higher). If the total is 26,001+ lbs and the trailer is rated over 10,000 lbs, you need Class A.
4. If neither applies but you carry 16+ people or haul placarded hazmat, you need Class C with the matching endorsement.
5. If none of the above applies, no CDL is needed, but other FMCSA rules may still apply above 10,001 lbs.

Example: a pickup rated 14,000 lbs pulling a gooseneck rated 16,000 lbs is a 30,000 lb combination with a trailer over 10,000 lbs, so you need Class A. A 24,000 lb truck pulling an 8,000 lb trailer totals 32,000 lbs, but needs no CDL because neither the truck nor the trailer crosses its threshold. Our guide to hotshot trucking ELD rules walks through the pickup setups where this trips people up.

If you plan to pull tractor-trailers, start with Class A. It covers more equipment and saves a second round of training and testing.

What CDL endorsements and restrictions can you add?

Endorsements let you operate specific vehicle types. Each needs its own test under 49 CFR 383.93.

What is a tanker endorsement?

You need the tanker (N) endorsement to drive a "tank vehicle." Under 49 CFR 383.5, that means a CMV designed to carry liquids or gases in tanks with an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more. An empty storage tank not designed for transport, temporarily attached to a flatbed, doesn't count.

The N endorsement takes a knowledge test only. On a CLP, an N only lets you drive an empty tank vehicle purged of any hazmat residue.

Common CDL restriction codes

Restrictions often reflect your test vehicle (49 CFR 383.95 and 383.153):

• L: no air brake equipped CMV
• Z: no full air brake equipped CMV (you tested with air-over-hydraulic brakes)
• E: no manual transmission CMV (you tested in an automatic)
• O: no tractor-trailer (you tested with a pintle hook instead of a fifth wheel)
• M / N: no Class A passenger vehicle / no Class A or B passenger vehicle
• K: intrastate only
• V: medical variance on file

How long does it take to get a CDL?

Federal rules set a minimum timeline, not a typical one. Program lengths vary by school, schedule, and state testing backlogs.

1. Pass the knowledge tests for your class and endorsements and get your CLP. You must be at least 18 (49 CFR 383.71(a)).
2. Complete ELDT with a registered provider. There are no minimum hours, but you must cover the full curriculum, score at least 80% on the theory assessment, and show behind-the-wheel proficiency (49 CFR 380.715).
3. Your provider reports completion to the Training Provider Registry by midnight of the second business day (49 CFR 380.717). No Class A or B skills test until it's on file.
4. Wait out the CLP hold. Under 49 CFR 383.25(e), you can't take the skills test in the first 14 days after your CLP is issued.
5. Pass the skills test in order: pre-trip inspection, basic vehicle control, on-road driving. Fail one segment and the test stops.

So the earliest you could test is day 15 after getting your CLP. Your CLP is valid for up to one year, and both ELDT portions must be finished within one year of starting the first.

What is entry level driver training for a CDL?

Entry-level driver training is the federal training minimum in effect since February 7, 2022 (49 CFR 380.603 and 380.609). It applies to a first Class A or B CDL, a B-to-A upgrade, or a first P, S, or H endorsement. Credentials held before that date are grandfathered.

Training must come from a provider on FMCSA's Training Provider Registry: a school, motor carrier, or individual who meets the instructor rules. FMCSA removes providers that fall short, so confirm yours is active before you pay. Class B holders can take the shorter Class A theory upgrade curriculum.

What are the CDL requirements in 2026?

Beyond the tests, here's what applies as of October 2026:

• Age: 21 to drive a CMV across state lines (49 CFR 391.11). States decide whether 18- to 20-year-olds can drive intrastate (K restriction). FMCSA's under-21 Safe Driver Apprenticeship Pilot ended November 7, 2025; we found no FMCSA decision on ATA's January 2026 request to extend it as of October 2026.
• Medical certification: interstate drivers need a valid medical examiner's certificate, now sent electronically to your state. Per an October 2026 FMCSA notice, drivers licensed outside Alaska can't rely on a paper card as proof after October 12, 2026. See our DOT physical and medical card guide.
• Drug and Alcohol Clearinghouse: since November 18, 2024, states check the Clearinghouse before issuing, renewing, upgrading, or transferring a CLP or CDL, and a "prohibited" status blocks it. More in FMCSA Clearinghouse explained.
• English: skills tests are in English with no interpreters (49 CFR 383.133(c)(5)). Texas also made CDL and CLP knowledge tests English-only on June 1, 2026.
• Domicile: you apply in your home state. Non-domiciled CDL rules changed in 2026; see our non-domiciled CDL guide.
• Hazmat: the H endorsement requires a TSA security threat assessment or valid TWIC (49 CFR 383.141).

Educational content, not legal advice. Confirm requirements against current FMCSA regulations and your state's rules.

FAQ

Is a CDL A license the same as a Class A CDL?

Yes. "CDL A," "Class A CDL," and "Group A" all refer to the same license for combination vehicles over 26,000 lbs towing more than 10,000 lbs.

Can you upgrade from a Class B to a Class A CDL?

Yes. You need a Class A CLP, Class A ELDT (you can use the shorter theory upgrade curriculum), the 14-day CLP wait, and a Class A skills test.

Do you need a CDL to pull a gooseneck trailer with a pickup?

You need a Class A if the combined ratings reach 26,001 lbs and the trailer is rated over 10,000 lbs. Below either threshold (with the pickup under 26,001 lbs), no CDL is needed, though other DOT rules can apply above 10,001 lbs.

What does the E restriction on a CDL mean?

E means you took your skills test in an automatic and can't drive a CMV with a manual transmission. To remove it, your state can give a modified skills test in a manual-transmission vehicle (49 CFR 383.135(b)(7)), and ELDT isn't required to remove a restriction.