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 four possible answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the West Virginia Commercial Driver’s 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 another name for the service line?

The signal line

The cable line

The surplus line

The power line

The trailer service air line is also referred to as the control line or signal line.

2. When switching gears, what happens if you remain in neutral for too long?

The vehicle will speed up.

You may have trouble getting the vehicle into the next gear.

You may kill the engine.

The vehicle will be difficult to stop.

Remaining in neutral for too long when shifting gears may make it difficult to put the vehicle into the next gear.

3. When you are driving while drowsy, you should:

Press on and try to finish the trip.

Take drugs to keep awake.

Stop and take a nap.

Stop for a coffee break.

The only effective way to deal with drowsiness while driving is to stop and sleep. Caffeine or other stimulant drugs may help you stay awake, but they will not keep you alert. You will likely end up being even more tired when the artificial stimulants begin to wear off.

4. Driving too fast:

Is a major cause of fatal crashes.

Can be a good way to get to your destination quickly.

Should only be done if the roadway is dry.

Is acceptable in light traffic.

Driving at excessive speeds is a major cause of fatal crashes. Never drive above the posted maximum speed limit and adjust your speed to fit conditions.

5. Test the tractor protection valve by:

Removing the air supply knob.

Removing the parking brake control knob.

Releasing air with the brake pedal.

Releasing air with the gas pedal.

You should test the tractor protection valve by allowing the air supply to properly charge, turning off the engine, then releasing air from the system by pressing the brake pedal several times. The tractor protection valve should move into its emergency position when psi drops to an unsafe level.

6. When transporting hazardous materials, placards:

Should only be used with explosives.

Should be used on all four sides of a vehicle.

Should only be used by Class A licensed drivers.

Should be used to reduce insurance rates.

Hazardous materials warning placards must be used on all four sides of a vehicle transporting hazardous materials.

7. Tread depth in the major grooves on a front tire should be at least:

1/32 of an inch.

2/32 of an inch.

4/32 of an inch.

3/4 of an inch.

Tires need to have at least 4/32 of an inch of tread depth in every major groove on the front tires, and at least 2/32 of an inch of tread depth on other tires.

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