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Cargo Tank Specifications, Classification & Testing Practice Test, Test 1 of 3

Question 1 of 12

Under the CDL tank vehicle rules, what individual tank capacity triggers the need for a tank endorsement on a Class A or Class B vehicle?

A An individual rated capacity of 100 gallons or more B An individual rated capacity of exactly 119 gallons C An individual rated capacity of more than 119 gallons, combined with an aggregate rated capacity of 1,000 gallons or more D Any tank capacity, regardless of size, if the vehicle is a Class A or B combination

✗

Not quite.

Wrong. 100 gallons is not the threshold used in the regulation. The individual tank must exceed 119 gallons, and even then the endorsement only applies if the aggregate capacity across all tanks also reaches 1,000 gallons or more.

The correct answer is C: An individual rated capacity of more than 119 gallons, combined with an aggregate rated capacity of 1,000 gallons or more.

49 CFR 383.5 (defines 'tank vehicle' as a CMV with tank(s) having an individual rated capacity greater than 119 gallons and an aggregate rated capacity of 1,000 gallons or more)

✗

Not quite.

Wrong. The rule requires an individual rated capacity of MORE than 119 gallons, not exactly 119 gallons. A tank rated at exactly 119 gallons does not meet the threshold by itself, and the aggregate requirement still applies.

The correct answer is C: An individual rated capacity of more than 119 gallons, combined with an aggregate rated capacity of 1,000 gallons or more.

49 CFR 383.5 (defines 'tank vehicle' as a CMV with tank(s) having an individual rated capacity greater than 119 gallons and an aggregate rated capacity of 1,000 gallons or more)

✓

Correct!

Correct. A tank endorsement is required for a Class A or B vehicle hauling liquid or liquid gas in a tank or tanks with an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more, whether the tank is permanently or temporarily attached to the vehicle or chassis.

49 CFR 383.5 (defines 'tank vehicle' as a CMV with tank(s) having an individual rated capacity greater than 119 gallons and an aggregate rated capacity of 1,000 gallons or more)

✗

Not quite.

Wrong. Vehicle class alone does not trigger the endorsement requirement; the tank capacity thresholds (individual over 119 gallons and aggregate of 1,000 gallons or more) must both be met.

The correct answer is C: An individual rated capacity of more than 119 gallons, combined with an aggregate rated capacity of 1,000 gallons or more.

49 CFR 383.5 (defines 'tank vehicle' as a CMV with tank(s) having an individual rated capacity greater than 119 gallons and an aggregate rated capacity of 1,000 gallons or more)