Instructions

Knowledge Test Class B

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 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.

Number of Question 50

Passing Score 40

1. If you must leave the roadway and drive on the shoulder in an emergency situation, you should:

Brake as hard as possible.

Get both sets of wheels onto the shoulder.

Stay on the shoulder until your vehicle has stopped, if possible.

If you must drive onto the shoulder to avoid a hazard, stay on it until you come to a stop; then signal, check your mirrors, and merge back into traffic. Avoid braking on the shoulder at speeds higher than about 20 mph. To help maintain control, always keep one set of wheels on the pavement, if possible.

2. When loading a trailer, it is important to:

Place as little weight as possible over the axles.

Place an appropriate amount of weight over the axles.

Not be concerned about how the weight is distributed.

Only place weight over the axles.

The weight of cargo in a trailer should be evenly balanced. Having too much or too little weight on an axle can interfere with proper control of the vehicle. Additionally, having too much weight on one axle can damage it.

3. The minimum acceptable tread depth for rear tires is:

1/64 of an inch.

1/32 of an inch.

2/32 of an inch.

When inspecting your tires, verify that there is at least 4/32 of an inch of tread depth in every major groove on the front tires, and tread depth of at least 2/32 of an inch on the other tires. Tires on the same vehicle should all be the same size.

4. An Anti-Lock Braking System (ABS) will:

Shorten your stopping distance.

Not change the way you apply the brakes.

Allow you to drive faster.

An Anti-Lock Braking System (ABS) is in place as an addition to a braking system. It intervenes to prevent brakes from locking up during hard braking. When driving a vehicle with ABS, you should brake in the same way that you would in a vehicle without ABS. It will not necessarily shorten your stopping distance.

5. To use the stab braking method in an emergency situation, you should:

Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.

Apply the brakes about halfway, but keep the wheels rolling.

Fully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops.

Apply the emergency brake.

The stab braking method for emergency stops involves fully applying the brakes until they lock up. The brakes are then released until the wheels start rolling, then the process is repeated.

6. If you plan to transport hazardous materials, you will:

Need to obtain a hazardous materials endorsement.

Need to drive while using flashing lights.

Need to wear a gas mask.

You must have a hazardous materials endorsement to transport any hazardous materials that require the vehicle to be placarded.

7. Distracted driving:

Can only be caused by physical distractions.

Can only be caused by mental distractions.

Can be caused by physical and/or mental distractions.

Can only be caused by cell phone use.

Distractions while driving can be physical (such as reaching for an object), mental (such as making conversation with a passenger), or both (such as holding a phone to send texts).

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