Instructions

Knowledge Test Class A

This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds 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 Kansas Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination, Doubles and Hazardous Materials. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.

Number of Question 50

Passing Score 40

1. You should cover cargo:

To protect the cargo from thieves.

To protect the cargo from weather.

To prevent other drivers from looking at what is being transported.

To keep the cargo a secret.

You should cover your cargo to protect people from the cargo if it spills, as well as to protect the cargo from the weather.

2. What does the air compressor governor do?

Controls when the air compressor pumps air into the air storage tanks.

Controls how quickly air leaves the air storage tanks.

Controls the temperature of the air entering the air storage tanks.

Controls the temperature of the air leaving the air storage tanks.

In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.

3. The drive shaft should:

Be bent toward the passenger side.

Be bent toward the driver’s side.

Be bent to one side or the other.

Not be bent.

During the vehicle inspection test, you should check that the drive shaft is not bent or cracked.

4. Before driving a vehicle with a dual air brake system, you must wait for the air compressor to build a minimum of ____ in both the primary and secondary systems.

25 psi

50 psi

75 psi

100 psi

Before driving a vehicle with a dual air brake system, you should wait for the air compressor to build up at least 100 psi in both the primary and secondary systems.

5. When a brake pedal is pressed and the S-cam is turned, the S-cam:

Presses the brake shoes against the inside of the brake drum.

Tightens the brake drum onto the axle.

Presses the brake lining against the wheel.

Releases air from the air tanks.

When a brake pedal is pressed and the S-cam is turned, the S-cam presses the brake shoes against the inside of the brake drum. This causes friction and will cause the vehicle to slow.

6. What does an Anti-Lock Braking System (ABS) do?

Allow the rear wheels to lock up

Allow all wheels to lock up

Help prevent wheel lockup

Alert other motorists when you are braking

The purpose of an Anti-Lock Braking System (ABS) is to prevent a vehicle's wheels from locking up when the driver brakes hard on a slippery surface.

7. If an aggressive driver confronts you, you should not:

Challenge them.

Ignore their gestures.

Avoid making eye contact.

Try to get out of their way.

When confronted with an aggressive driver, your first priority should be to get out of their way. Do not provoke the driver by making eye contact, trying to race, or refusing to move out of your traffic lane. Additionally, ignore any gestures that are intended to provoke you.

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