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 four possible answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the 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 a trip:

Explanation
After a trip, you may be required to perform an inspection and file a report on each vehicle that you've driven.

2. Due to the risk of liquid surge in tanks, you should:

Explanation
Be aware of the risk of liquid surge when driving tanks transporting liquid cargo. To prevent the negative affects of surge on your driving, you should start, slow, and stop very smoothly.

3. 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.

4. When a construction worker is close to the road, you should:

Explanation
In construction zones, do not exceed the posted safe sped limit. Slow down even more when workers are near the roadway.

5. Headlights:

Explanation
To improve visibility, you should use high beam headlights at night where it is safe and legal to do so. However, the glare from high beam lights can blind other drivers. You should dim your lights to their low beam setting when driving within 500 feet of an approaching vehicle.

6. When driving, your mirrors should:

Explanation
It is important for you to be aware of your surroundings at all times. To do this, regularly check your mirrors.

7. During a pre-trip inspection, belts in the engine compartment should be:

Explanation
During a pre-trip inspection, belts in the engine compartment should be checked for tightness and excessive wear.
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