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Inspecting Tank Vehicles — CDL Tank Vehicles Practice Test

Inspecting Tank VehiclesQuestion 1 of 16

16 questions in this topic · 16 drawn at random this round

What should you make sure of when checking manhole covers and vents?

CDL Manual — Tank Vehicles (§8)

Questions are based on Section 8 (Tank Vehicles) of the official CDL manual (AAMVA model). The Tank Vehicles (N) endorsement is a knowledge test only and is given in ENGLISH (real test); our Chinese & Spanish are study aids to help you learn the English material. The N endorsement is required to haul a liquid or gas in a permanent/temporary tank over 119 gallons (or a portable tank of 1,000 gal+). Federal rules (FMCSA, 49 CFR 391.11) require English proficiency to drive commercially.

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This CDL Tank Vehicles Inspecting Tank Vehicles practice set has 16 practice questions based on the official exam materials, each with an instant explanation. You need 80% on the real CDL Tank Vehicles knowledge test to pass.

Sample questions

Three questions from the Inspecting Tank Vehicles bank with the correct answer and an explanation. The practice quiz above draws 16 questions at random from the same bank.

  1. Does the liquid or gas carried in a tank vehicle have to be a hazardous material for a tank endorsement to be required?

    • No — the liquid or gas does not have to be hazardous — Correct answer
    • Yes — only hazardous liquids or gases require it
    • Yes — only flammable liquids require it
    • Only if the liquid is also being placarded

    Explanation: A tank endorsement is required for certain vehicles that transport liquids or gases, and the liquid or gas does not have to be a hazardous material. English term: tank endorsement, the N endorsement (罐车背书 / endoso de cisterna).

    Handbook: Tank Vehicles — Endorsement Scope

  2. If you have a Class A or B CDL, at what size of permanently mounted cargo tank does hauling a liquid or liquid gas require a tank endorsement?

    • Greater than 450 liters (119 gallons) — Correct answer
    • Greater than 1,000 gallons
    • Greater than 50 gallons
    • Any size, regardless of capacity

    Explanation: With a Class A or B CDL, a tank endorsement is required to haul a liquid or liquid gas in a permanently mounted cargo tank rated at greater than 450 liters (119 gallons). English term: cargo tank (货罐 / tanque de carga).

    Handbook: Tank Vehicles — Endorsement Scope

  3. At what rated capacity does a portable tank require a tank endorsement?

    • 1,000 gallons or more — Correct answer
    • 119 gallons or more
    • 450 gallons or more
    • 5,000 gallons or more

    Explanation: A tank endorsement is also required for a portable tank rated at 1,000 gallons or more. English term: portable tank (便携式罐 / tanque portátil).

    Handbook: Tank Vehicles — Endorsement Scope