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.. Read More

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 or four possible answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the State of Delaware 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
Passing Score

1. After finishing a pre-trip inspection, you should:

Explanation
Before a trip, you should ensure that air reaches all air brakes on all trailers by opening up the rear emergency line and service line shut-off valves to listen for escaping air. Close both shut-off valves before beginning to drive.

2. Who is responsible for identifying the hazard class of materials being shipped?

Explanation
The shipper of hazardous materials is responsible for identifying the product's identification number; proper shipping name; hazard class; packing group; and correct packaging, labels, marking, and placards.

3. Be sure that your wheel bearing/seals are:

Explanation
During an inspection, ensure that the wheel bearing/seals are not leaking.

4. Rust around wheel nuts may mean:

Explanation
Rust around wheel nuts may mean that they are loose. Check the tightness of the nuts if you see any rust in the area.

5. A Class 7 hazardous material is:

Explanation
Radioactive materials are categorized as Class 7 hazardous materials.

6. If you’re not sure what to do to extinguish a fire in your vehicle, you should:

Explanation
If you are not sure which kind of extinguisher should be used on a fire in your vehicle, particularly a hazardous materials fire, you should wait for the firefighters to arrive and allow them to extinguish it.

7. What should you do if your vehicle gets stuck on railroad tracks?

Explanation
If your CMV gets stuck on railroad tracks, you should immediately leave the vehicle and get away from the tracks. Check the signposts or signal housing at the crossing for emergency contact information and call 911, or another appropriate emergency number.
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