Free Massachusetts CDL practice test online
Take a free Massachusetts CDL practice exam online with clear explanations—no sign-up. Coverage includes general knowledge, vehicle systems, combination vehicles, cargo, and endorsements. Then verify current requirements with Massachusetts Registry of Motor Vehicles.
Massachusetts Registry of Motor Vehicles gives the general knowledge test as 50 questions, and federal law sets the bar at 80% correct on every knowledge test. You must also hold a commercial learner’s permit for 14 days before the skills test.
New to the knowledge test? CDL endorsements explained · One-week study plan
Requirements before you test
Massachusetts CDL test requirements
Commercial licensing is largely federal. Any figure above credited to a 49 CFR section applies in every state — see 49 CFR 383.135(a)(1) and 49 CFR 383.25(e). A figure credited to Massachusetts Registry of Motor Vehicles is Massachusetts’s own, and may be stricter than the federal floor. Test length, fees, and scheduling are set by Massachusetts Registry of Motor Vehicles (official source).
Entry-Level Driver Training comes first
Since February 7, 2022, a new Class A or Class B CDL, a class upgrade, or a first passenger, school bus, or hazardous materials endorsement requires training from a provider on the FMCSA Training Provider Registry (49 CFR 380.600). Practice questions are study material and do not satisfy that requirement.
FMCSA Training Provider RegistryYou need a Massachusetts licence first
A commercial learner’s permit only counts if you already hold an ordinary licence from the same state (49 CFR 383.25(a)(2)). The Massachusetts non-commercial knowledge test runs 25 questions and needs 18 correct, with permits issued from age 16.
Massachusetts permit practice testWhat you will practice
Build coverage topic by topic.
Each question carries a topic, difficulty, explanation, and source section so your review has context.
Sample questions
5 Massachusetts CDL practice questions
Try these Massachusetts sample questions now — each shows the correct answer with a plain-language explanation and a source section. The full 600-question bank is in the practice run.
1. Longer combination vehicles offtrack more, so in turns the rear of the last trailer:
- Takes a shorter inside path you must allow for
- BNever leaves the lane center
- CTracks exactly on the steer-tire path
- DFollows a wider outside path than the tractor
Answer: Takes a shorter inside path you must allow for. Plan turns so the inside rear path clears curbs and vehicles. Longer combinations need more space.
Source: Commercial Driver License Manual — Combination vehicles — offtracking
2. Posted speeds on freeway off-ramps are often:
- Set for automobiles and may be too fast for a heavy or high vehicle
- BMinimum speeds you must meet
- CRequired only at night
- DSafe for any commercial load
Answer: Set for automobiles and may be too fast for a heavy or high vehicle. Downhill curved exits are especially risky. Slow enough before the curve, not while braking and turning together.
Source: Commercial Driver License Manual — Driving safely — off-ramps and on-ramps
3. On wet roads, a recommended speed adjustment is about:
- AMatching the fastest car
- BNo change with ABS
- A one-third reduction from dry-road speed
- DDoubling your speed
Answer: A one-third reduction from dry-road speed. Wet roads can roughly double stopping distance, so slow early and leave more space.
Source: Commercial Driver License Manual — Controlling speed — matching speed to the road
4. After you steer around an obstacle in an emergency, you must be ready to:
- Countersteer—turn the wheel back the other way as one continuous action
- BApply the parking brake
- CLook only at the gauges
- DAccelerate hard immediately
Answer: Countersteer—turn the wheel back the other way as one continuous action. Emergency steering and countersteering are two parts of one action. Without preparing to countersteer, you will not recover the lane in time.
Source: Commercial Driver License Manual — Driving emergencies — steering to avoid a crash
5. The brake-and-accelerator interlock on some transit buses should never be used as:
- AA service brake
- A parking brake
- CA door control
- DA retarder
Answer: A parking brake. The interlock holds the bus while the rear door is open. It is not designed to hold the vehicle parked, so set the parking brake.
Source: Commercial Driver License Manual — Passenger vehicles — vehicle systems
CDL knowledge areas
Classes and endorsements, organized.
Each area below scopes the reviewed question bank to one knowledge test. The material is federal, so it applies in Massachusetts just like everywhere else — the endorsement guide explains how the codes fit together.
The foundation for commercial driving: inspections, space, speed, communication, hazards, and safe operation.
- Pre-trip inspection
- Space and speed management
- Railroad crossings
- Emergency procedures
Understand air-brake components, inspections, warning devices, stopping distance, and controlled braking.
- Dual air systems
- Low-air warnings
- Brake lag and fade
- Applied-leak and static checks
Prepare for safe coupling, inspection, turning, backing, and handling of tractor-trailer combinations.
- Fifth-wheel inspection
- Coupling and uncoupling
- Off-tracking
- Trailer skid prevention
Study hazard communication, shipping papers, placards, loading rules, parking, and emergency response responsibilities.
- Hazard classes
- Placards and labels
- Shipping papers
- Loading and segregation
Learn how liquid surge, outage, bulkheads, and high centers of gravity change vehicle handling.
- Liquid surge
- Outage requirements
- Smooth braking
- Rollover prevention
Practice converter-dolly inspection, coupling order, rearward amplification, and stability principles.
- Coupling sequence
- Converter dollies
- Rearward amplification
- Space management
Prepare to inspect, load, and operate buses while keeping passengers, aisles, and exits safe.
- Vehicle inspection
- Passenger loading
- Emergency exits
- Prohibited practices
Review student loading, danger zones, mirrors, emergency procedures, and special railroad-crossing duties.
- Danger zones
- Student loading
- Mirror use
- Railroad crossings
More northeast practice
Nearby CDL practice tests
Jump to another northeast state hub, or browse every jurisdiction.
Common questions
What this practice can—and cannot—tell you.