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Massachusetts CDL Permit Test - Knowledge Test Class B

Number of questions: 50
Passing score: 40
Directions: This license is required for driving a single vehicle with a GVWR of more than 26,001 pounds, and a trailer not to exceed 10,000 pounds gross vehicle weight rating, or a vehicle designed to transport 24 or more people (including the driver). To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has four possible answer choices. Test questions come from the Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving.. Endorsements that may be used with a Class B CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.
You have made error so far
Passing grade —
10 or fewer errors

If your vehicle is hydroplaning, you should:

Speed up.
Not apply the brakes.
Put the vehicle in reverse.
Turn the steering wheel as hard as possible.

When it is difficult for others to see your vehicle, such as at dawn or dusk, you can help other drivers by:

Keeping your lights off.
Turning your lights on.
Driving on the shoulder.
Waving an arm out the window.

When starting the vehicle during the pre-trip inspection, the coolant temperature should:

Rise slowly.
Hold steady.
Jump quickly.

When driving down a steep grade, your brakes may fade. What happens if brakes fade?

They become quieter.
They become less effective.
They work better than usual.
They work differently from front to back.

The height of a vehicle’s center of gravity:

Usually has no impact on the handling the vehicle.
Plays a large role in a driver's ability to safely handle the vehicle.
Should not be a concern when loading the vehicle.
Should only be a concern if there are lots of hills on the planned route.

When approaching a railroad crossing, you should:

Increase your speed to get across the tracks as quickly as possible.
Roll your window down to listen for a train.
Rely on traffic control signals.
Never try to outdrive an approaching train.

Looking far ahead of your vehicle while driving is:

Discouraged, as there is little you can do about something far up the road.
Encouraged to help you identify hazards as early as possible.
Not allowed.
Only encouraged if you are transporting hazardous materials.
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