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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..

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 Alaska 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.

Passing grade:

Which of the following does not indicate bad brakes?

Explanation
When inspecting your brakes, you should check for cracked drums; shoes or pads covered in oil, grease, or brake fluid; and shoes that are missing, broken, or worn dangerously thin.

Distracted driving can be avoided by:

Explanation
Distractions while driving can be physical (such as reaching for an object), mental (such as making conversation with a passenger), or both (such as holding a phone to send texts). Strategies to help you avoid distracted driving include pre-programming radio stations; planning out your route in advance; avoiding complex or emotionally taxing conversation while driving; adjusting your mirrors before setting out; and not eating, drinking, or smoking while behind the wheel.

If the letter “G” appears in Column 1 of a hazardous materials shipping paper, the shipping paper must also include:

Explanation
A "G" in Column 1 of a hazardous materials shipping paper indicates that the description in Column 2 is the generic name for a material. A generic shipping name must be accompanied by a technical name.

Who is responsible for the safe operation of a vehicle?

Explanation
The person driving a vehicle is responsible for its safe operation. Be sure to perform routine vehicle inspections before operating a commercial motor vehicle.

How often do hazardous materials employees need to be trained?

Explanation
Employees who work with hazardous materials must be trained and tested at least once every three years.

When driving a vehicle equipped with an Anti-Lock Braking System (ABS), you should:

Explanation
Drivers of vehicles equipped with ABS and drivers of vehicles without ABS should brake in relatively the same manner. When ABS is working properly, it automatically applies when brakes are applied in situations that may create lockup.

If one-fourth of the leaves in a leaf spring are missing when a vehicle is inspected:

Explanation
When inspecting a vehicle's suspension, you should look for broken or missing leaves in the leaf springs. Any defect of this kind is dangerous. If one-fourth or more of the leaves are missing from any leaf spring, the vehicle must be put out-of-service.
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