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 possible answer choices. Test questions come from the Alaska 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. If you must drive in reverse, using driver's side backing:

Is always encouraged.

Is discouraged.

Is only recommended if it is raining.

If you must back up, it is safest to back toward the driver's side of the vehicle. This way, as the driver, you will have the best possible view of your path of travel.

2. When you must travel down a hill, when should you switch into a lower gear?

As you begin to move downward

As you go downhill and pick up speed

Before you start going downhill

You should always slow down and shift into a lower gear before starting down a hill. If you do not begin to drive down a hill at a low enough speed, you risk overusing your brakes, causing them to overheat and fade.

3. What is a retarder?

A device that prevents a vehicle from going too fast

A device that prevents a vehicle from being too loud

A device that improves a vehicle's gas mileage

Retarders help to slow vehicles, reducing drivers' need to use brakes.

4. When drivers turn, they usually:

Look in the direction of the turn.

Look in the direction opposite the turn.

Look behind their vehicles.

When turning, drivers usually look in the direction of their turn. If a driver fails to signal before a turn or lane change, their body movements may still provide a clue that they are planning to turn.

5. When encountering a railroad crossing during the driving test, you should:

Pass another vehicle on the tracks if the other vehicle is moving too slowly.

Change lanes while on the tracks.

Not change gears while on the tracks.

During the on-road driving test, you must not stop, change gears, pass another vehicle, or change lanes while any part of your vehicle is in a railroad crossing.

6. A wig wag is:

A low pressure warning device.

A tube that carries air to the brakes.

A type of air brake system.

Vehicles with air brakes are required to be equipped with a low pressure warning device. A wig wag is a type of low air pressure warning device. This device drops a mechanical arm into the driver's view if the pressure in the tanks drops to a level between 55 and 75 psi.