Do linemen need a CDL? Strictly speaking, no federal rule requires a lineman to hold a commercial driver's license. The requirement comes from the vehicle. The trouble is that a line crew's everyday equipment, like digger derricks, large bucket trucks and trucks towing pole or wire-reel trailers, often lands right in CDL territory. The Bureau of Labor Statistics says line workers who drive heavy vehicles usually need a state-issued CDL. So in practice, most hiring managers treat it as part of the job.
This guide covers which line trucks trigger which license class, why so many ads ask for Class A in particular, and how the permit, training and testing steps work. It also covers the restrictions that can quietly limit a new license if you test in the wrong truck.
The short answer: it depends on the truck, not the title
Federal CDL rules have applied since April 1, 1992. According to the Federal Motor Carrier Safety Administration (FMCSA), you need a CDL when you drive a vehicle that meets one of the commercial vehicle classifications, whether the trip is interstate or stays inside one state. States issue the license after you pass state-run knowledge and skills tests matched to the vehicle type.
For a lineworker, that means three questions decide everything:
- What is the truck's gross vehicle weight rating (GVWR)? It is printed on the door-jamb label.
- Will you tow anything, and what is that trailer rated for?
- Will your crew cross state lines, such as on storm deployments?
A groundman who only drives a pickup to the yard may never touch a CDL vehicle. Within a year, that same groundman may be asked to move a derrick truck pulling a pole trailer to a job site. Employers know this, which is why the CDL shows up as "required" or "required within X months of hire" in so many postings.
Don't confuse the two "Class A"s. Many contractor postings grade crews as A, B or C lineman, along with foreman, operator and groundman. That letter is a skill and pay grade. It has nothing to do with your driver's license class. A "Class A lineman, CDL required" ad is asking for two separate things.
CDL classes mapped to line equipment
FMCSA defines three license classes. Here is how each one lines up with what a line crew actually drives. Always confirm against the specific truck's GVWR and the trailer's rating, because two trucks that look alike can be rated very differently.
| Class | Federal definition (paraphrased) | Where it shows up in linework |
|---|---|---|
| Class A | A combination with a gross combination weight rating of 26,001 lbs or more, where the towed unit is rated over 10,000 lbs | A line truck or derrick pulling a loaded pole trailer, wire-reel trailer or equipment trailer rated over 10,000 lbs |
| Class B | A single vehicle rated 26,001 lbs or more, or one towing a unit rated 10,000 lbs or less | A heavy digger derrick or bucket truck driven solo, or pulling a light trailer |
| Class C | Vehicles outside A and B that carry 16 or more people, placarded hazmat, or certain select agents and toxins | Rare on a line crew. It mostly matters if a vehicle hauls placarded hazardous materials |
The trailer rule is the one that catches people. A truck that only needs Class B when driven alone can require Class A as soon as it hooks to a trailer rated over 10,000 lbs. Pole and reel trailers are exactly the kind of equipment that can push you over that line.
Why so many lineman jobs ask for Class A
If Class B covers the truck by itself, why do so many ads say Class A? There are three practical reasons.
- Flexibility on the crew. Class A is the broadest of the three classes. A crew member who holds it can be assigned to move a combination one day and a single truck the next. That makes scheduling easier for a foreman.
- Storm and travel work. BLS notes that crews working on interstate grid projects may travel long distances, and that workers often drive utility vehicles. Crews that cross state lines need an interstate CDL, which may come with extra federal requirements on top of the state license.
- Avoiding an upgrade later. Under FMCSA's Entry-Level Driver Training rule, a Class B holder who later wants to upgrade to Class A has to complete training again. If you are paying for training anyway, going straight to Class A often costs less overall.
How to get a Class A CDL as a lineworker
The order of steps is set by federal rules, though states add their own details. Here is the federal framework.
1. Hold a regular driver's license and get a learner's permit
Under 49 CFR 383.25, a commercial learner's permit (CLP) requires you to be at least 18, hold a valid driver's license from the same state and pass the general knowledge test for the class you want. The permit lasts up to one year from first issue without retesting.
2. Drive only with a qualified CDL holder
While on a permit, you may drive on public roads only with a CDL holder who has the right class and endorsements. That person has to be with you the whole time and in direct observation, normally in the front seat beside you. Permit holders cannot haul placarded hazardous materials.
3. Complete Entry-Level Driver Training
FMCSA requires Entry-Level Driver Training (ELDT) for first-time Class A or B applicants and for B-to-A upgrades. The training has to come from a provider listed on FMCSA's Training Provider Registry, and you must finish it before the skills test. If a line school or truck-driving school offers CDL training, confirm it is on that registry before you pay.
4. Wait out the 14 days, then take the skills test
You cannot take the skills test during the first 14 days after your permit is first issued. FMCSA advises taking the skills test in the same type of vehicle you plan to drive, and the next section explains why that matters so much for line equipment.
5. Check your state's extra requirements
BLS notes that other requirements, such as medical certification and minimum age, vary by state. Look up your state DMV's CDL page before you schedule anything.
Restrictions that can limit a new lineman's license
FMCSA lists restriction codes that get printed on your license based on the vehicle you tested in. Several of them affect line workers directly.
- L or Z (no full air brakes). You get L if you test in a vehicle without full air brakes, fail the air brake knowledge test or don't complete the air brake check correctly. You get Z if you test in a vehicle with air-over-hydraulic brakes. If the derricks at your yard have full air brakes, an L or Z restriction can keep you out of the driver's seat.
- E (no manual transmission). Testing in an automatic adds this restriction. Many fleets are automatic now, but if your employer runs older manual trucks, it can matter.
- O (no fifth-wheel connections). You get this when you test for Class A in a combination with a pintle hook or other non-fifth-wheel connection. Pole and equipment trailers often use pintle hooks, so an O restriction may not affect linework at all. It does keep you out of a standard tractor-trailer, which reduces your options outside the trade.
The takeaway: if an employer or school offers to test you in a training vehicle, ask what brakes, transmission and hitch it has. Then decide whether the restrictions it would add are ones you can live with.
Get it before hiring, at line school, or on the job?
There are three common routes, and the right one depends on where you are starting. If you're still at the very beginning, our guide to breaking into linework with no experience covers the entry options in more detail.
| Route | Works best when | Watch out for |
|---|---|---|
| Get the CDL on your own before applying | You are applying for groundman or apprentice jobs where the ad says CDL required at hire | Paying for a provider that is not on the Training Provider Registry, or testing in a vehicle that adds restrictions |
| CDL bundled into a line school program | You were going to line school anyway and the program includes registered ELDT | Confirm whether the class is A or B and what vehicle you will test in |
| Employer-sponsored after hire | The ad says CDL required within a set period, and the company trains in-house | Deadlines in the offer letter. Missing them can stall your progression or your job |
Whichever route you take, the CDL tends to show up in hiring screens. Apprenticeship programs often screen for a high school diploma, algebra, an aptitude test, a drug screen and a physical fitness test, according to BLS. A driver's license and a clean driving record often sit on that same list, and a CDL or permit makes you stand out from other entry-level applicants.
Pre-application CDL checklist for lineworkers
- Read the job ad's CDL line separately from the lineman grade. Does it say Class A or B, and required at hire or within a set time?
- Ask the employer which trucks and trailers a new hire is expected to move.
- Get a regular driver's license in the state where you will test, and keep your driving record clean.
- Study for the general knowledge test and the air brake section before applying for the permit.
- Choose an ELDT provider that is listed on the FMCSA Training Provider Registry.
- Ask what vehicle you will test in: full air brakes or not, manual or automatic, fifth wheel or pintle hook.
- Plan for the 14-day wait between permit and skills test.
- If the job involves storm travel across state lines, check what your state requires for an interstate CDL.
Is a CDL worth it for a future lineman?
The license is a means to an end. BLS reports a median annual wage of $95,320 for electrical power-line installers and repairers (May 2025), with about 10,900 openings projected each year over the 2025 to 2035 decade. Getting to that pay takes years of apprenticeship. The CDL won't get you there on its own, but it removes one reason to pass you over at the starting point.
Bottom line: You don't need a CDL to be a lineman in the legal sense, but you will almost certainly need one to be useful on a line crew. If you are choosing, go for Class A. Test in a truck with full air brakes so the license covers the equipment you'll actually drive, and use a provider on FMCSA's Training Provider Registry. If an employer will sponsor it after hire, take that deal, but get the deadline in writing.