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200+ Free Massachusetts CDL Combination Practice Questions

Pass your Massachusetts CDL Combination Vehicles Test exam on the first try — instant access, no signup required.

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The red 8-sided 'Trailer Air Supply' knob on the dash is:

A
B
C
D
to track
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Key Facts: Massachusetts CDL Combination Exam

20

Questions on the Massachusetts Combination Vehicles knowledge exam

Mass.gov CLP page

20 min

Time allowed for the Massachusetts Combination Vehicles knowledge exam

Mass.gov CLP page

16

Correct answers needed to pass the Massachusetts Combination Vehicles exam

Mass.gov CLP page

$30

Massachusetts learner permit application fee

Mass.gov CLP page

180 days

Initial Massachusetts CLP validity period

Mass.gov CLP page

Massachusetts Class A CLP applicants must pass the Combination Vehicles knowledge exam: 20 questions, 20 minutes, and 16 correct answers. Study the Massachusetts CDL Manual March 2025 combination section and FMCSA CDL material: fifth wheel and kingpin coupling, tug and visual checks, air/electric lines, landing gear, trailer brakes, off-tracking, rollover, backing, trailer skids, jackknife recovery, and safe speed and space management. Federal CDL rules require at least 80% correct on knowledge tests and bar Group A issuance when the combination portion is failed.

Sample Massachusetts CDL Combination Practice Questions

Try these sample questions to test your Massachusetts CDL Combination exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 200+ question experience with AI tutoring.

1Which Massachusetts CLP knowledge test is required for Class A combination vehicle privileges?
A.Combination Vehicles
B.School Bus only
C.Tank Vehicles only
D.Passenger Transport only
Explanation: Mass.gov lists the Combination Vehicles exam for Class A CLP applicants. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.
2How many questions are on the Massachusetts Combination Vehicles knowledge exam?
A.50 questions
B.20 questions
C.25 questions
D.30 questions
Explanation: Mass.gov lists the Combination Vehicles exam as 20 questions. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.
3How many correct answers are needed to pass the Massachusetts Combination Vehicles exam?
A.10 correct answers
B.12 correct answers
C.16 correct answers
D.20 correct answers
Explanation: Mass.gov lists 16 correct answers out of 20 for the Combination Vehicles exam. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.
4What is the time allowed for the Massachusetts Combination Vehicles knowledge exam?
A.60 minutes
B.25 minutes
C.No time limit is published
D.20 minutes
Explanation: Mass.gov publishes a 20-minute time allowance for the Combination Vehicles exam. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.
5Under Group A/Class A rules, the towed vehicle must have a GVWR over what amount?
A.10,000 pounds
B.5,000 pounds
C.8,000 pounds
D.26,001 pounds
Explanation: Mass.gov and 49 CFR 383.91 use the over-10,000-pound GVWR threshold for the towed unit. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.
6What does GCWR stand for?
A.Gross Cargo Weight Report
B.Gross Combination Weight Rating
C.General Commercial Weight Rule
D.Gross Coupling Wheel Rating
Explanation: GCWR is the combined rating used for a power unit and trailer combination. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.
7What does GVWR stand for?
A.General Vehicle Width Rating
B.Gross Verified Weight Record
C.Gross Vehicle Weight Rating
D.Gear Vehicle Weight Rule
Explanation: GVWR is the rating assigned to a single vehicle or trailer. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.
8What is a combination vehicle?
A.A straight truck with no trailer
B.Any vehicle with a manual transmission
C.A passenger vehicle with a roof rack
D.A truck or tractor pulling one or more trailers
Explanation: Combination vehicles consist of a power unit and one or more trailers. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.
9What is the kingpin on a semitrailer?
A.The vertical pin that locks into the fifth wheel jaws
B.The landing gear crank handle
C.The red trailer air supply knob
D.The rear trailer axle
Explanation: The kingpin enters the fifth wheel and is held by the locking jaws. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.
10What is the fifth wheel used for?
A.Inflating trailer tires
B.Coupling the tractor to the trailer kingpin
C.Operating trailer marker lights
D.Measuring cargo weight
Explanation: The fifth wheel supports and locks the semitrailer to the tractor. Source basis: Massachusetts RMV CDL Manual March 2025 Section 6, Mass.gov CLP and CDL class pages, FMCSA CDL Manual guidance, and 49 CFR Part 383.

About the Massachusetts CDL Combination Exam

The Massachusetts CDL Combination Vehicles Test is the RMV knowledge exam for drivers seeking Class A commercial learner permit or CDL privileges for qualifying tractor-trailer and other combination vehicles. Mass.gov lists the Combination Vehicles exam as 20 questions, 20 minutes, and 16 correct answers to pass. The Massachusetts CDL Manual March 2025 and FMCSA combination-vehicle material focus on inspection, fifth wheel and kingpin coupling, air and electrical lines, landing gear, trailer brakes, off-tracking, rollover prevention, safe turns, backing, trailer skids, jackknife recovery, speed, and space management.

Assessment

Massachusetts RMV multiple-choice CLP knowledge exam for Class A combination applicants; Mass.gov lists General Knowledge and Combination Vehicles for Class A applicants, with Air Brakes and endorsements as applicable.

Time Limit

20 minutes

Passing Score

16 correct out of 20 on the Massachusetts Combination Vehicles exam; at least 80% correct under 49 CFR §383.135

Exam Fee

$30 Massachusetts learner permit application fee; CDL endorsement fee is $10 with the CDL permit application or during the same transaction, or $30 if taken on a different day (Massachusetts Registry of Motor Vehicles)

Massachusetts CDL Combination Exam Content Outline

Core section

Driving Combination Vehicles Safely

Rollover risk, high center of gravity, steering response, rearward amplification, off-tracking, wide turns, low-clearance crossings, backing, trailer swing, and space management.

Core section

Combination Vehicle Air Brakes

Trailer hand valve, tractor protection valve, trailer air supply control, service and emergency lines, glad hands, crossed-line faults, leaks, and trailer brake tests.

Core section

Coupling and Uncoupling

Fifth wheel plate and jaws, kingpin, trailer height, high coupling, tug test, visual inspection, air/electrical line connection, landing gear, chocks, and safe release sequence.

Core section

Inspecting Combination Vehicles

Coupling area, trailer frame, suspension, brakes, tires, lights, reflectors, landing gear, cargo doors, load security, and post-coupling final checks.

Licensing section

Massachusetts CDL and FMCSA Rules

Massachusetts Class A combination requirements, CLP fees and validity, 20-question/20-minute exam format, 16-correct pass mark, FMCSA Group A vehicle rules, and federal 80% passing standard.

How to Pass the Massachusetts CDL Combination Exam

What You Need to Know

  • Passing score: 16 correct out of 20 on the Massachusetts Combination Vehicles exam; at least 80% correct under 49 CFR §383.135
  • Assessment: Massachusetts RMV multiple-choice CLP knowledge exam for Class A combination applicants; Mass.gov lists General Knowledge and Combination Vehicles for Class A applicants, with Air Brakes and endorsements as applicable.
  • Time limit: 20 minutes
  • Exam fee: $30 Massachusetts learner permit application fee; CDL endorsement fee is $10 with the CDL permit application or during the same transaction, or $30 if taken on a different day

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

Massachusetts CDL Combination Study Tips from Top Performers

1Start with the Massachusetts CDL Manual March 2025 and focus on Section 6 combination-vehicle material before drilling practice questions.
2Turn coupling into a checklist: inspect fifth wheel, align, check trailer height, back under, tug test, visual lock check, connect lines, charge air, test brakes, raise landing gear, and remove chocks.
3Memorize red emergency/supply and blue service glad-hand functions, then practice crossed-line, leak, and trailer brake test scenarios.
4Study control risks as cause and effect: speed plus high center of gravity increases rollover, hard braking can lock trailer wheels, and off-tracking makes trailer wheels cut inside turns.
5Before testing, confirm Massachusetts CLP documents, fees, medical self-certification, ELDT status, appointment rules, and current RMV requirements on Mass.gov.

Frequently Asked Questions

Who needs the Massachusetts CDL Combination Vehicles test?

Drivers seeking Massachusetts Class A privileges for qualifying combination vehicles need the Combination Vehicles knowledge exam unless an official transfer or waiver rule applies. Mass.gov lists the combination exam for Class A CLP applicants.

How many questions are on the Massachusetts combination test?

Mass.gov lists the Combination Vehicles knowledge exam as 20 questions with 20 minutes allowed.

What score do I need to pass?

Mass.gov lists 16 correct answers out of 20 for the Combination Vehicles exam. 49 CFR §383.135 also requires at least 80% correct on CDL knowledge tests.

What topics are on the Massachusetts combination test?

Study combination inspection, fifth wheel and kingpin coupling, trailer height, tug and visual checks, air and electrical lines, landing gear, trailer brake controls, off-tracking, rollover, safe turns, backing, trailer skids, jackknife recovery, and speed/space management.

How much does the Massachusetts CLP application cost?

Mass.gov lists a $30 learner permit application fee. CDL endorsement fees are listed separately as $10 with the CDL permit application or during the same transaction, or $30 if taken on a different day.