Tank

This endorsement is required to haul any liquid or gaseous materials in a tank or tanks having an individual rated capacity of more than 119 gallons and an aggregate rated 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 an individual rated capacity of more than 119 gallons and an aggregate rated 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 15 multiple choice questions. Each question has three answer choices. To pass, the applicant must answer at least 12 questions correctly. Test questions come from the California Commercial Driver Handbook. Questions come from chapters covering: Driving Safely, Combination Vehicles and Doubles and Triples. The Tank endorsement can be used with the Class A, B or C CDL.

Number of Question
Passing Score

1. When coupling, after you've connected the air lines to the trailer, you should:

Explanation
Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. After connecting the air lines to the trailer while coupling, you should supply air to the trailer.

2. The weight of a truck:

Explanation
A vehicle's weight is an important factor affecting its stopping distance. The heavier a vehicle is, the more work the brakes will need to do to bring it to a complete stop.

3. After coupling, there should be ____ between the upper and lower fifth wheel.

Explanation
Before a trip, be sure to inspect all couplings. There should be no space between the upper and lower fifth wheel.

4. In a sudden turn, the ____ trailer is the most likely to turn over.

Explanation
When making a turn, be sure to steer gently and smoothly. Making a quick turn while pulling trailers is dangerous and can increase the risk of the last trailer rolling over.

5. A driver operating a tank equipped with baffles should be particularly wary of:

Explanation
While baffles in a tank inhibit forward and backward surge, they do not prevent side-to-side surge. Surge to the sides can cause rollovers.
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