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

To obtain a CDL Hazmat endorsement in Massachusetts, you must first possess a valid Commercial Driver's License (CDL). Then, pass the Hazardous Materials (Hazmat) knowledge test at a Massachusetts RMV Service Center. After passing, you will need to complete a Federal Security Threat Assessment application, including fingerprinting. Once approved, the endorsement will be added to your CDL.

To obtain a CDL Hazmat license, you need to have a valid Commercial Driver's License (CDL). You must also pass the Hazardous Materials (Hazmat) knowledge test. Additionally, you are required to complete a Federal Security Threat Assessment application, which includes fingerprinting and a background check. You must be at least 21 years old and proficient in English.

When applying for a CDL Hazmat endorsement in Massachusetts, you need to provide a valid CDL, proof of U.S. citizenship or lawful permanent residency (like a passport or green card), and a completed medical self-certification form. Additionally, you must provide fingerprints and undergo a TSA background check.

Yes, there is a dedicated written test for the CDL Hazmat endorsement. This test is designed to assess your knowledge of transporting hazardous materials safely. It covers topics such as loading and unloading hazardous materials, bulk packaging, and driving and parking rules. Passing this test is a mandatory step to obtain the Hazmat endorsement on your CDL.

The CDL Hazmat endorsement written test covers a range of topics related to hazardous materials. These include recognizing hazardous materials, understanding placarding and labeling requirements, safely loading and unloading hazardous materials, handling emergencies, and understanding the associated federal regulations. The goal is to ensure that drivers can safely transport hazardous materials.

Yes, there are extra charges linked to acquiring a CDL Hazmat endorsement in Massachusetts. These include the application fee, fingerprinting fee for the TSA background check, and testing fee. The fees can vary, so it's recommended to check the current charges with the Massachusetts Registry of Motor Vehicles or the TSA.

Yes, a background check is mandatory for the CDL Hazmat endorsement. This is conducted by the Transportation Security Administration (TSA). The process includes fingerprinting and checking for any disqualifying criminal offenses. This ensures that hazardous materials are transported by individuals who meet the safety and security standards.

Yes, specialized training and certification are mandatory for the CDL Hazmat endorsement. Applicants must pass a written knowledge test on the regulations and requirements of transporting hazardous materials. This ensures that they understand the safety procedures and can respond appropriately in case of an emergency. Training courses are available to prepare for this test.

No, you cannot transport hazardous materials without a valid CDL Hazmat endorsement in Massachusetts. The endorsement is required by federal law and ensures that drivers have the necessary knowledge and training to safely transport hazardous materials. Driving without the endorsement can result in severe penalties, including fines and suspension of your CDL.

Yes, you can add the CDL Hazmat endorsement to your current CDL license. You don't need to apply for a new CDL. However, you'll need to pass a written test on hazardous materials regulations and undergo a TSA security threat assessment, including a background check. Once you've met these requirements, the Hazmat endorsement can be added to your existing CDL.