Combination #1
Combination Vehicles Practice Test | Massachusetts 2025 #1 Page 2 of 3
Train for FREE online with our Massachusetts CDL combination vehicle test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a MA combination license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a combination license may vary from state to state.
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8 . If a trailer is too high:
Coupling will be easier.
Before coupling together a tractor and a trailer, you should make sure the trailer is at the proper height. If the trailer is too low, the trailer nose may be damaged. If the trailer is too high, it may not be able to couple correctly.
9 . In a combination rig, it is best to make:
Slow, planned stops.
When driving a combination vehicle, it is important to brake well in advance and look far ahead of your vehicle to avoid the need for sudden stops. Making habits of these actions will help you prevent your trailer from jackknifing.
10 . A shut-off valve:
Should always be open.
Shut-off valves are used in air supply lines to control the passage of air from one trailer to another. The rear shut-off valve should always be closed to prevent air from leaving the braking system.
11 . One way to prevent a rollover is to:
Keep cargo as far from the ground as possible.
A rollover is more likely if cargo is unevenly loaded in a rig. To help prevent a dangerous rollover, it is important to keep a load as centered on the rig as possible.
12 . ____ are the cause of more than half of all accident-related truck driver deaths.
Pedestrians
More than half of all accident-related truck driver deaths are a result of truck rollovers. To help prevent a rollover, be sure to load cargo low to the ground and centered on your rig. Take corners slowly and carefully.
13 . Test the tractor protection valve by:
Releasing air with the gas pedal.
You should test the tractor protection valve by allowing the air supply to properly charge, turning off the engine, then releasing air from the system by pressing the brake pedal several times. The tractor protection valve should move into its emergency position when psi drops to an unsafe level.
14 . Failure to keep the fifth wheel plate properly greased could:
Affect the lights.
Failure to keep the fifth wheel plate properly lubricated can create friction between the tractor and trailer, causing steering problems.
2025 Massachusetts | Frequently Asked Questions
In Massachusetts, a CDL Class B license allows the holder to operate any single vehicle with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or any such vehicle towing another not exceeding 10,000 pounds GVWR. This includes buses, farm labor vehicles, and any vehicle designed to transport 16 or more passengers, including the driver.
A Class B CDL license in Massachusetts allows the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a vehicle towing another not exceeding 10,000 pounds. These vehicles include large buses, segmented buses, box trucks, dump trucks with small trailers, and tractor-trailers.
To acquire a Class B CDL license in Massachusetts, you must be at least 18 years old, possess a valid Massachusetts driver's license, pass a vision test, and complete a CDL application. You'll also need to pass a written knowledge exam and a skills test, which includes a pre-trip vehicle inspection, basic controls test, and on-road driving exam.
In Massachusetts, you must be at least 18 years old to qualify for a Class B Commercial Driver's License (CDL). However, please note that if you want to use your CDL to drive commercial vehicles across state lines (interstate driving), federal regulations require you to be at least 21 years old.
While not always necessary, specific endorsements may be required for certain Class B CDL jobs in Massachusetts. Endorsements certify additional skills like driving a school bus, operating a vehicle with air brakes, or transporting hazardous materials. Each endorsement requires passing a separate knowledge test and sometimes a skills test.
The Class B CDL skills assessment in Massachusetts includes a pre-trip vehicle inspection, a basic controls test, and an on-road driving exam. The pre-trip inspection tests your knowledge on the key parts of the vehicle. The basic controls test assesses your ability to maneuver and control the vehicle, and the on-road test evaluates your driving skills in traffic.
Class B CDL license holders in Massachusetts are restricted to driving single or combination vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, provided the GVWR of the vehicle(s) towed is not more than 10,000 pounds. They are not allowed to drive a Class A combination vehicle without the appropriate endorsement.
Yes, in Massachusetts, the written Class B CDL test is available in multiple languages, including but not limited to Spanish, Chinese, and Portuguese. However, federal regulations require all CDL holders to read and speak English sufficiently to converse with the general public, understand highway traffic signs and signals, respond to official inquiries, and make entries on reports and records.
Yes, in Massachusetts, accommodations can be made for the Class B CDL written exam if you have a disability. You should contact the Massachusetts Registry of Motor Vehicles (RMV) in advance to discuss your specific needs. Accommodations may include more time, a quiet room, or having the test read aloud, depending on your situation.
Yes, if you don't pass the Class B CDL written test in Massachusetts, you can retake it. However, you must wait a specific period before retaking the test. The Massachusetts Registry of Motor Vehicles (RMV) requires a two-week waiting period between attempts. Be aware that you may be required to pay a retest fee as well.