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 Nevada 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. If an Anti-Lock Braking System (ABS) is equipped on a trailer but not on a tractor:

Explanation
A vehicle being equipped with anti-lock brakes on only the tractor or only the trailer provides additional control during braking.

2. To use the stab braking method while transporting liquid cargo, you should apply the brakes:

Explanation
The stab braking method for emergency stops involves fully applying the brakes until they lock up. The brakes are then released until the wheels start rolling, and then the process is repeated.

3. Which of the following is not required emergency equipment?

Explanation
All commercial motor vehicles are required to be equipped with the proper emergency equipment. This may include spare electrical fuses; three red reflective triangles, six fuses, or three liquid burning flares; and at least one properly charged and rated fire extinguisher. Optional equipment includes tire chains, tire changing equipment, a list of emergency phone numbers, and an accident reporting kit/packet.

4. In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when air pressure drops to a level between:

Explanation
In vehicles equipped with an automatic tractor protection valve, the valve will pop out if air pressure drops to a level between 20 and 45 psi. When the valve pops out, the protection valve will close, stopping the flow of air.

5. If the emergency air line loses pressure:

Explanation
The emergency air line controls the emergency brakes on a combination vehicle. A loss of air pressure in the emergency line will cause the emergency trailer brakes to activate.

6. What is the number one cause of death and injury in a work zone?

Explanation
Speeding is the leading cause of death and injury in work zones. Use extra caution when driving near workers in a work zone.

7. Hazardous materials laws are controlled by:

Explanation
Because of the risks presented by the nature of the materials, government on federal, state, and local levels may impose regulations on the transportation of hazardous materials.
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