Combination Vehicles Practice Test | Massachusetts 2024 #2

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 2024, 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.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . Failure to keep the fifth wheel plate properly greased could:

Cause the trailer to disconnect.

Cause steering problems.

Cause braking problems.

Affect the lights.

Failure to keep the fifth wheel plate properly lubricated can create friction between the tractor and trailer, causing steering problems.

2 . If a trailer begins to skid, the driver should:

Lock the brakes.

Release the brakes.

Steer in the opposite direction.

Accelerate.

If your trailer starts to skid while you are braking, you should release the brakes and allow them to begin to regain traction. Once its wheels have regained their grip on the road, the trailer will begin to straighten out and follow the tractor.

3 . When a combination vehicle goes around a corner:

The turn should be made as tightly as possible.

The front and rear wheels move in different paths.

The rear wheels should run over the curb.

It is acceptable for street signs to be knocked over if they are too close to the road.

When a vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is called off-tracking. This effect is especially pronounced on vehicles with trailers.

4 . A shut-off valve:

Is located on the front of a trailer.

Is located on the instrument panel.

Prevents air from escaping an air brake system.

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.

5 . In a combination rig, it is best to make:

Quick, sudden stops.

Sharp turns.

Quick accelerations.

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.

6 . After connecting the air lines to the trailer while coupling, you should:

Supply air to the trailer.

Chock the wheels.

Inspect the fifth wheel.

Connect the electrical cord.

Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. After connecting the air lines to the trailer while coupling, you should supply air to the trailer.

7 . Test the tractor protection valve by:

Removing the air supply knob.

Removing the parking brake control knob.

Releasing air with the brake pedal.

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.

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2024 Massachusetts | Frequently Asked Questions

A CDL Class A license in Massachusetts is defined as a commercial driver's license that permits the holder to operate any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 lbs or more, provided the towed vehicle(s) have a GVWR over 10,000 lbs. This typically includes tractor-trailers and truck and trailer combinations.

With a Class A CDL license in Massachusetts, you can operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, and livestock carriers. This license also allows you to tow vehicles over 10,000 pounds. Essentially, it covers any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more.

To obtain a Class A CDL license in Massachusetts, you must be at least 18 years old (21 for interstate travel), possess a valid driver's license, pass a vision test, and obtain a medical certificate. You must also pass a written knowledge test and a skills test, which includes a pre-trip vehicle inspection, a basic controls test, and an on-road driving test.

In Massachusetts, you must be at least 18 years old to qualify for a Class A CDL license. However, you need to be 21 years old if you intend to drive across state lines, transport passengers, or haul hazardous materials. It's crucial to adhere to these age restrictions for safe and legal operation of commercial vehicles.

Specific endorsements aren't required for a Class A CDL license in Massachusetts, but they allow you to operate specialized vehicles. These include endorsements for double/triple trailers, passenger vehicles, school buses, tank vehicles, and hazardous materials. Each endorsement requires passing additional knowledge and/or skills tests.

The Class A CDL skills test in Massachusetts consists of three parts: a pre-trip vehicle inspection, a basic controls test, and an on-road driving test. The pre-trip inspection tests your ability to inspect your vehicle before driving. The basic controls test evaluates your ability to maneuver and control the vehicle. The on-road driving test assesses your ability to drive the vehicle in various road and traffic conditions.

Yes, there are limitations for Class A CDL license holders. For instance, in Massachusetts, if you're under 21, you're restricted to intrastate driving. Some endorsements like HAZMAT or passenger require additional testing and background checks. Also, certain medical conditions may limit your ability to operate commercial vehicles. Violations can result in temporary or permanent disqualification of your CDL.

Yes, in Massachusetts, the written Class A CDL test can be taken in multiple languages other than English. These include Spanish and Portuguese. However, federal regulations require all CDL holders to have a basic understanding of English for safety reasons. This includes being able to read road signs, communicate with officials, and comprehend driving regulations.

Yes, you can request accommodations for the Class A CDL written test in Massachusetts if you have a disability. The Massachusetts Registry of Motor Vehicles (RMV) provides reasonable accommodations in accordance with the Americans with Disabilities Act. It's recommended to contact the RMV in advance to arrange these accommodations.

Yes, you can retake the Class A CDL written test in Massachusetts if you don't pass on your first attempt. There is a waiting period of at least 24 hours before you can retake the test. Please note, there is a retesting fee each time. It's recommended to study thoroughly to increase your chances of passing on the next attempt.