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Maryland 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 three or four possible answer choices. Test questions come from the Maryland 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

What is a drawback of retarders?

They may not be permitted everywhere.
They can help to slow a vehicle.
They cannot be turned off.

What should a driver do if their vehicle hydroplanes?

Use the brakes.
Release the accelerator and push in the clutch.
Take the vehicle out of gear.

Compared to talking on a cell phone while driving, texting while driving is:

Much safer.
Just as safe.
More dangerous.

If a load is 40 feet long, it must be secured by a minimum of ____ tie-downs.


A steering wheel should be:

Held with one hand while the other hand rests.
Held with both hands to ensure an adequate grip.
Released if the vehicle is approaching a bump.

When driving a vehicle equipped with an Anti-Lock Braking System (ABS), you should:

Stop harder than you would in a vehicle not equipped with ABS.
Use extra braking force to ensure the ABS kicks in.
Brake as you would in a vehicle not equipped with ABS.
Brake with less force than you would in a vehicle not equipped with ABS.

Poisonous fumes can enter a cab due to:

A defective exhaust system.
Using the wrong type of fuel.
A lack of oil in the engine.
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