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 three or four possible answer choices. Test questions come from the South Dakota 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. Bridges usually freeze:

Only once temperatures drop significantly below 32 degrees Fahrenheit.

After all other surfaces.

Before other surfaces.

Bridges tend to freeze before other parts of the roadway. Be particularly careful on bridges when temperatures are close to the freezing point.

2. If there is a fire in your vehicle, you should not:

Park in an area away from buildings, trees, brush, and other vehicles.

Pull into a service station.

Notify emergency services of your problem and your location.

In the event of a vehicle fire, you should leave the road and stop in an open area. Do not pull into a service station as fuels at the service station could catch fire. Report the fire and your location to emergency services.

3. When inspecting a power steering-equipped vehicle, you should be sure that:

The fluid is at the proper level.

The hoses are connected to the battery.

The hoses do not contain any fluid.

Only small leaks are present.

When inspecting a vehicle equipped with power steering, check the hoses, pumps, and fluid level. Be sure to check for and repair leaks before operating the vehicle.

4. When braking with ABS, you should:

Pump the brake pedal.

Brake normally.

Brake harder than you would with a different braking system.

When braking a vehicle equipped with an Anti-Lock Braking System (ABS), you should not brake any differently than you would if driving a vehicle with a different braking system.

5. When making a tight maneuver, you should:

Not use your mirrors, as they can be distracting.

Use your mirrors, but not too frequently.

Use your mirrors frequently.

It is important for you to be aware of your surroundings at all times. To do this, regularly check your mirrors. You should make a particular point of checking your mirrors when merging, changing lanes, turning, and performing tight maneuvers.

6. When backing up, follow a turning trailer by:

Changing nothing. The vehicle will naturally follow the trailer.

Changing the direction of the steering wheel.

Turning the steering wheel even harder in the direction that it is already turning.

When backing with a trailer, begin by turning the steering wheel in the direction opposite of the turn. Once the trailer starts to turn, reverse the direction of the steering wheel to follow the trailer.

7. Which of the following vehicles is not exempted in requiring the driver to hold a CDL?

A military vehicle

A school bus

An emergency vehicle

Subject to certain conditions, a CDL is not required to operate military vehicles, authorized emergency vehicles, farm equipment, or recreational vehicles. It is also not required for operating a straight truck that contains only your personal property that you are not selling.

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