Do Linemen Need a CDL? Class A Rules Explained

Yes — in practice almost every lineworker ends up holding a commercial driver's license, and usually a Class A. What differs from employer to employer is when you need it: some want a learner's permit on your first day, others give you six or twelve months after hire, and some put you through CDL training themselves. Here is how the federal rules work and what real utility postings ask for.

Why line work needs a Class A

The license class follows the vehicle, not the job title. Under the federal rules, a Group A (Class A) vehicle is "any combination of vehicles with a gross combination weight rating (GCWR) of 11,794 kilograms or more (26,001 pounds or more) provided the GVWR of the vehicle(s) being towed is in excess of 4,536 kilograms (10,000 pounds)." A Group B vehicle is a single vehicle of 26,001 pounds or more towing no more than 10,000 pounds.

Line crews drive bucket trucks and digger derricks, and they tow pole trailers, reel trailers and equipment. A heavy line truck on its own can be a Class B vehicle; the same truck towing a trailer with a gross vehicle weight rating over 10,000 pounds is a Class A combination. That is why employers ask for Class A even though you will rarely drive anything resembling a tractor-trailer. PG&E's journey lineworker posting, for example, says you "may drive a Class A vehicle (i.e. bucket truck and line truck) to and from the job site."

When employers want it: four patterns

We read current postings and job descriptions from utilities and training programs. The timing falls into four groups:

• Permit before day one. PG&E's journey lineworker posting requires a "valid California Class A driving permit by first day of employment" and a passed California DMV medical exam by the same date. Caldwell Community College & Technical Institute's Electrical Lineworker program requires a CDL Class A learner's permit "prior to first day of Linemen I", plus a current DOT physical and drug screen on the first day of class.
• Permit at hire, license within a year. Ipswich Electric Light Department (Massachusetts) asked apprentice lineworker applicants for a Class B CDL permit with airbrake endorsement, with Class A preferred, and the CDL to be earned within 12 months of hire.
• License within six months. Murray City's apprentice lineworker job description says you "must possess a valid Utah Commercial Driver License within six (6) months of appointment." FPL's lineworker recruiting page, which is aimed at experienced journeyman linemen, asks for a Class A CDL "or ability to obtain within six months of employment."
• The employer trains you. Seattle City Light's paid, six-month Pre-Apprentice Lineworker program includes climbing wooden poles and "CDL training to obtain a Class 'A' CDL." Its minimum qualification for apprenticeships is a valid Washington State driver's license by the time of hire.

Lineman schools are another route: Southeast Lineman Training Center includes Class A CDL training in its published program total, listed at $2,240 on the electrical program page as of October 2026 (see our SLTC cost breakdown).

These are examples, not rules for the industry. Read the specific posting you are applying to — the CDL line is usually in the minimum qualifications or "special requirements" section, and it is easy to miss a deadline that starts counting on your first day.

The federal steps to a Class A, in order

CDLs are issued by your state, but the core steps are set by federal regulation and are the same everywhere:

1. DOT medical exam. Anyone who has not been "medically examined and certified as physically qualified to operate a commercial motor vehicle" must be before driving one. A standard medical certificate lasts up to 24 months; some conditions mean annual recertification.
2. Knowledge tests and the commercial learner's permit (CLP). You take your state's written tests and receive a CLP. The CLP is valid for up to one year, and you may only drive a commercial vehicle on it with a CDL holder beside you.
3. Entry-level driver training (ELDT). Since February 7, 2022, first-time Class A and Class B applicants, and Class B holders upgrading to Class A, must complete training from a provider listed on FMCSA's Training Provider Registry before the skills test. The training has a theory part and a behind-the-wheel part (range and public road). FMCSA sets no minimum number of hours; the instructor must cover the full curriculum. The rule is not retroactive: it applies to people who obtain a CLP on or after February 7, 2022.
4. The 14-day wait. "The CLP holder is not eligible to take the CDL skills test in the first 14 days after initial issuance of the CLP."
5. The skills test. A vehicle inspection, basic vehicle control, and an on-road drive, in a vehicle representative of the class you want.

Add those together and a realistic minimum from no permit to a Class A license is several weeks, even if training starts immediately — which is why a "within six months" deadline is comfortable for someone who plans, and tight for someone who leaves it.

Restrictions that matter for line work

Three restrictions catch people who test in whatever vehicle is handy:

• Air brakes. If you fail the air brake knowledge test, or take the skills test in a vehicle without air brakes, your license is restricted from operating a commercial vehicle with any type of air brakes.
• Automatic transmission. If you test in an automatic, your license is restricted from vehicles with a manual transmission.
• Pintle hook. If you test for Class A in a combination connected by "a pintle hook or other non-fifth wheel connection", you are restricted from tractor-trailers connected by a fifth wheel. This one is common in line work, because trucks towing pole trailers often use pintle hooks — and for most utility driving the restriction does not matter.

Before you book a skills test on your own, ask the employer or program which restrictions they will accept. The answer can decide which training vehicle you should use.

Drug testing and the Clearinghouse

Driving a vehicle that requires a CDL brings you under federal drug and alcohol rules. Before you first perform safety-sensitive driving for an employer you generally must have a pre-employment controlled substances test, and the employer needs a verified negative result before letting you drive, and the employer must query FMCSA's Drug and Alcohol Clearinghouse before using you as a driver. Seattle City Light's hiring page lists a drug test for apprenticeship positions that require a Class A CDL, adding that "federal law requires random drug tests throughout your career for this license."

Where the CDL fits in the hiring process

The CDL is a qualification you can buy and schedule. The aptitude test is not. At many investor-owned utilities, craft applicants sit an EEI battery — usually the CAST — early in the process, well before the physical, the medical and the CDL deadline come into play. Our hiring process guide walks through the order.

That gives you a practical order of work if you are serious about line work:

1. Prepare for the aptitude battery first, because it screens people out before anyone looks at a license. The CAST covers graphic arithmetic, mechanical concepts, reading and mathematical usage; try the free Mechanical Concepts and Mathematical Usage demos to see where you stand, and the CAST practice battery for a timed run.
2. Get your DOT medical card and CLP while you apply. Both are cheap relative to tuition and show an employer you have started — but a CLP is only valid for up to a year, so time it against when you expect to train and test.
3. Hold off on paying for full Class A training until you know whether your target employer or program includes it — some do, as above.

If you are still choosing a route in, our apprenticeship guide and how long lineman school takes cover the alternatives. Full practice access for every EEI battery we cover is on the pricing page.

Frequently asked questions

Do you need a CDL to be a lineman?

In almost every case, yes, usually a Class A. Employers differ on timing: some want a learner's permit on day one, others allow six to twelve months after hire, and some train you to the license themselves.

Do I need a CDL before applying for a lineworker apprenticeship?

Not always. Many postings accept a learner's permit or a commitment to obtain the license within a set period. Check the minimum qualifications of the specific posting.

Is Class B enough for line work?

Sometimes as a first step — Ipswich accepted a Class B permit with Class A preferred — but towing trailers over 10,000 pounds behind a heavy truck requires Class A, so most employers ask for it.

How long does it take to get a Class A CDL?

At least a few weeks. You need a medical certificate, a learner's permit held for at least 14 days, entry-level training from a registered provider, and a skills test. Scheduling usually adds time.

Does lineman school include CDL training?

Some programs do. Southeast Lineman Training Center includes Class A CDL training in its published total. Check each school's cost breakdown.

Does having a CDL help my CAST result?

No. The CAST is scored on its own and a license does not change it. A CDL strengthens an application, but you still need to perform on the aptitude battery.