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 Kentucky Commercial Driver License Manual. 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. What is a drawback of retarders?

They may not be permitted everywhere.

They can help to slow a vehicle.

They cannot be turned off.

A retarder is a device that helps to slow a vehicle, reducing the need for a driver to use the brakes. However, these devices can be noisy and are not permitted everywhere.

2. During a trip, gauges are:

Often misleading.

The only way a driver can learn of potential trouble with the vehicle.

A way to learn of potential trouble with the vehicle.

During a trip, you should regularly check the gauge and instrument panels, mirrors, tires, cargo, and lights for signs of trouble.

3. Rims with welding repairs:

Are not safe to use.

Are acceptable to be used on tires in the rear of the vehicle.

Are acceptable to be used if carrying a light load.

Wheels or rims with welding repairs are never safe to use.

4. Watching the road ahead of you:

Allows you time to make a plan to avoid an upcoming hazard.

Is not encouraged as it distracts you from driving.

Is only important when traveling in congested traffic.

Always watch for hazards on the road ahead. Doing this will allow you time to react to hazards before meeting them.

5. When should mirrors be adjusted?

Before driving

While driving

After driving

Mirror adjustment should be checked prior to the start of any trip. If your vehicle has a trailer, the trailer must be straight in order for the mirrors to be checked accurately.

6. In very hot weather, tires should be checked regularly because:

They may melt.

Air pressure may increase with the temperature.

The tread wears down more quickly than in cooler weather.

Because air pressure increases with temperature, you should pay special attention to the tire mounting and pressure when traveling in hot weather.

7. A surge occurs with which type of cargo?

Solid

Liquid

Gas

Tank vehicles carrying liquid cargo are vulnerable to surge. Liquid surge is an occurrence in which a wave of liquid sloshes from one end or side of a tank to the other, causing dangerous effects on handling.

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