Instructions

Tank

This endorsement is required to haul any liquid or gaseous materials in a tank or tanks having a capacity of 1,000 gallons or more that is either permanently or temporarily attached to the vehicle or chassis. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. Each question has three possible answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the Commercial Driver Guide. Questions come from chapters covering: Driving Safely, Tank Vehicles, Hazardous Materials and Combination Vehicles. The Tank endorsement can be used with the Class A, B or C CDL.

Number of Question 20

Passing Score 16

1. The trailer hand valve should be used:

To test the trailer brakes.

To check the connection between the trailer and tractor.

To accelerate.

The trailer hand valve (also referred to as the "trolley valve" or "Johnson bar") works the trailer brakes and should be used only when testing them. Using the trailer hand valve while driving could result in a skid.

2. If driving on a surface with poor traction, a driver should accelerate slowly:

Because it is always good to accelerate slowly.

To keep from losing control of the vehicle.

So that they do not accelerate faster than the vehicle ahead.

To avoid a loss of control, you should accelerate slowly when driving in poor-traction conditions, such as rain or snow.

3. If your vehicle gets stuck on railroad tracks, you should:

Sit in the cab and call for help.

Exit the cab and walk away from the tracks.

Motion for another driver to push your vehicle.

If your vehicle gets stuck on railroad tracks for any reason, you should immediately exit the vehicle and walk away from the tracks. Contact the proper emergency authorities.

4. An indicator that cargo contains hazardous materials is:

The cargo is stored in cylinder tanks.

The cargo is picked up from a supermarket.

The cargo is packaged in cardboard boxes.

Packaging can be an indicator of whether or not materials are hazardous. Cylinders and drums are often used to hold and transport hazardous materials.

5. Backing with a trailer is dangerous because:

It is difficult to see behind the vehicle.

Most trucks do not have the ability to move in reverse.

Cargo may fall out of the trailer.

Backing a truck is always dangerous because the driver may not be able to see everything behind them. CMV operators should avoid backing whenever possible.

6. When a tank that is divided by bulkheads is being loaded with liquid cargo, most of the weight should be placed:

In the top of the tank.

In the middle of the tank.

In the rear of the tank.

When filling a tank that is divided by bulkheads, make sure that you do not place too much weight on the front or rear of the vehicle.

7. To prevent a vehicle from rolling backward when beginning to move forward from a stopped position, you should:

Turn off the engine.

Partly engage the clutch.

Apply the emergency brake.

To prevent a vehicle with manual transmission from rolling backward when you begin to move forward from a stopped position, you can partly engage the clutch before removing your foot from the brake pedal.

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