To get a Class B license in Massachusetts, you need a valid Class D driver’s license, a current DOT medical certificate, completion of an FMCSA-approved Entry-Level Driver Training program, passing scores on the written knowledge exams to earn a Commercial Learner’s Permit, and a passing skills test taken at least 14 days after the permit is issued. The Massachusetts Registry of Motor Vehicles (RMV) handles licensing, but the standards come from both state law and federal motor carrier rules, so the paperwork pulls from several agencies.
What a Class B License Covers
A Class B Commercial Driver’s License authorizes you to operate any single vehicle with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, plus a towed vehicle up to 10,000 pounds GVWR.1eCFR. 49 CFR 383.91 – Commercial Motor Vehicle Groups In practice that means dump trucks, concrete mixers, box trucks, garbage and recycling trucks, city transit buses, school buses, and large flatbeds that don’t pull heavy trailers. Once a trailer behind you crosses 10,000 pounds GVWR, you’re in Class A territory and a Class B won’t cover you.
Who Can Apply
You can apply at age 18, but federal rules bar anyone under 21 from driving commercially across state lines. If you’re 18 to 20, the RMV issues the CDL with a K restriction limiting you to intrastate driving within Massachusetts. The restriction drops off at 21.2Massachusetts Registry of Motor Vehicles. Commercial Drivers License CDL Classes and Endorsements
You need a valid Massachusetts Class D license to apply. The RMV pulls your driving record from every state that has licensed you in the last ten years and checks the national Commercial Driver’s License Information System to confirm you don’t already hold a CDL elsewhere. You can only hold one CDL at a time, in one state.3General Court of Massachusetts. Massachusetts General Laws Chapter 90F Section 8
What Will Disqualify You
A first conviction for operating under the influence (including a blood alcohol concentration of 0.04 or higher in a commercial vehicle), leaving the scene of an accident, refusing a chemical test, or using a motor vehicle to commit a felony triggers a minimum one-year CDL disqualification. A second conviction for any of these means lifetime disqualification. Two serious traffic violations within three years brings a 60-day disqualification; three within three years brings 120 days.4General Court of Massachusetts. Massachusetts General Laws Chapter 90F Section 9
Entry-Level Driver Training
Since February 7, 2022, anyone pursuing a first-time Class B CDL has to complete Entry-Level Driver Training (ELDT) through a provider listed on the FMCSA Training Provider Registry. The RMV will not schedule your skills test without proof of completion.5Federal Motor Carrier Safety Administration. Entry-Level Driver Training ELDT
ELDT has two parts: theory (classroom or online instruction covering vehicle systems, safe driving, and regulations) and behind-the-wheel training in an actual commercial vehicle. The federal rule is performance-based rather than hour-based, so instructors sign you off on each skill area once you demonstrate proficiency. When you finish, the school reports your completion to the FMCSA registry and the RMV verifies it electronically.
If you already held a CDL or had a Commercial Learner’s Permit issued before February 7, 2022, ELDT does not apply to you. Programs typically run between $3,000 and $10,000 depending on length and the school.
Medical Certificate
Every applicant needs a Medical Examiner’s Certificate (Form MCSA-5876) issued by a provider on the FMCSA’s National Registry of Certified Medical Examiners.6Federal Motor Carrier Safety Administration. States A standard certificate is valid for up to 24 months. The examiner can issue a shorter certification if a condition like high blood pressure needs monitoring.7Federal Motor Carrier Safety Administration. DOT Medical Exam and Commercial Motor Vehicle Certification You have to keep the certificate current the entire time you hold the CDL, not just at the initial application.
You’ll also submit a CDL self-certification form telling the RMV what kind of commercial driving you plan to do. Most drivers select non-excepted interstate or non-excepted intrastate, both of which require keeping a medical certificate on file.8Mass.gov. CDL Self-Certification Form
Identity Documents
The RMV applies REAL ID standards, so bring documents proving lawful presence in the United States, your Social Security number, and Massachusetts residency. A birth certificate or U.S. passport, Social Security card, and two proofs of address like utility bills or a lease are a typical combination.9Massachusetts Registry of Motor Vehicles. Massachusetts Identification ID Requirements Check the RMV’s document checklist before your appointment; wrong paperwork means rescheduling.
The Commercial Learner’s Permit
With your medical certificate, self-certification, and identity documents, you’ll visit an RMV service center to take the written knowledge exams. The general knowledge test covers vehicle inspection, basic control, safe driving, and cargo. If the vehicle you plan to drive has air brakes, you’ll take the air brake knowledge test at the same visit.
Passing earns you a Commercial Learner’s Permit. The application fee is $30, plus $10 for each endorsement knowledge test taken at the same time.10Massachusetts Registry of Motor Vehicles. Apply for a Commercial Learners Permit CLP Federal law requires you to hold the CLP for at least 14 days before you can take the skills test.11eCFR. 49 CFR 383.25 – Commercial Learners Permit CLP Use the time to practice with a licensed CDL holder beside you.
The Skills Test
The skills test runs in three consecutive parts:
- Pre-trip inspection, where you walk the vehicle and identify and check engine, brakes, lights, tires, steering, and coupling components. Air-brake-equipped vehicles also require an air brake system check.
- Basic vehicle control, performed in a controlled area with maneuvers like offset back, parallel parking, and alley dock.
- On-road driving in real traffic, where the examiner evaluates turns, lane changes, speed management, and overall judgment.
The road test fee is $35.12Mass.gov. Commercial Class A B or C Road Tests You bring a properly registered and inspected vehicle that meets Class B weight requirements, plus a licensed CDL holder to accompany you to the test site. After you pass, the RMV processes the license and mails the card to your address.
Pick Your Test Vehicle Carefully
Two restrictions get stamped onto your CDL based on the vehicle you tested in, and both narrow the jobs you can take.
The L restriction prohibits you from operating any commercial vehicle with air brakes. You’ll get it if you fail the air brake knowledge test or take the skills test in a vehicle without air brakes.13eCFR. 49 CFR 383.95 – Restrictions Most heavy trucks and buses use air brakes, so this restriction eliminates most Class B jobs. Removing it means passing the air brake knowledge test and retaking the skills test in an air-brake-equipped vehicle.
The E restriction bars you from manual-transmission commercial vehicles and attaches when you test in an automatic. Many fleets still run manuals, so testing in a manual vehicle with full air brakes gives you the broadest job options.
Endorsements
A base Class B lets you drive heavy single vehicles. Specific cargo and passenger work needs additional endorsements, each with its own knowledge test, and some with an added skills test or background check.2Massachusetts Registry of Motor Vehicles. Commercial Drivers License CDL Classes and Endorsements
- P (Passenger) for vehicles designed to carry 16 or more passengers. Written and road test.
- S (School Bus) for a full-size school bus. Written test, road test, and background check.
- N (Tank) for hauling bulk liquids or gases. Written test only.
- H (Hazardous Materials) for transporting placarded hazmat. Written test plus a TSA security threat assessment.
- X combines tank and hazardous materials. Written test plus TSA assessment.
The hazmat endorsement involves a TSA background check with fingerprinting at an approved enrollment center. TSA recommends starting at least 60 days ahead because processing can take over 45 days. The security threat assessment costs $85.25, or $41.00 if you already hold a valid TWIC card.14Transportation Security Administration. HAZMAT Endorsement
What It Costs
The RMV fees are modest; training is where the money goes.
- CLP application: $3010Massachusetts Registry of Motor Vehicles. Apply for a Commercial Learners Permit CLP
- Endorsement knowledge test: $10 each with the CLP application, $30 each if taken later
- Skills test: $3512Mass.gov. Commercial Class A B or C Road Tests
- CDL renewal: $7515Mass.gov. Renew Your Commercial Drivers License CDL
- ELDT program: typically $3,000 to $10,000
- DOT physical: variable, paid to the examiner
- TSA hazmat background check (if applicable): $85.2514Transportation Security Administration. HAZMAT Endorsement
Military Skills Test Waiver
Veterans and active-duty service members who operated heavy military vehicles may be able to skip the road test. The FMCSA Military Skills Test Waiver requires at least two years of experience in military vehicles equivalent to civilian commercial vehicles, age 21 or older, application within one year of leaving the qualifying military position, and a clean driving record with no suspensions, revocations, or disqualifying CDL offenses. The waiver only replaces the road test. You still take the written knowledge exams, get the medical certificate, and complete ELDT unless you held a CLP before February 2022. The class of CDL available to you depends on the military vehicle you operated.
Drug and Alcohol Clearinghouse
Every CDL holder and applicant is subject to the FMCSA Drug and Alcohol Clearinghouse, a federal database that tracks drug and alcohol violations across employers and states. You need to register through Login.gov with your current CDL or CLP information so prospective and current employers can run the required queries.16Federal Motor Carrier Safety Administration. FMCSA Drug and Alcohol Clearinghouse – Register A failed test, refusal, or alcohol violation stays attached to your record regardless of state or employer, and clearing it requires completing a return-to-duty process with a substance abuse professional and follow-up testing.