How many pounds (aggregate gross weight) of hazardous materials in a single class typically requires placards on a vehicle?

1,001 pounds or more of a single class of hazardous materials requires placards.

How many placards must be displayed on a vehicle transporting hazardous materials that requires placarding?

Four placards must be displayed — one on each side and one on each end of the vehicle.

What shape are hazardous materials placards?

Placards are diamond-shaped (square set on a point), measuring at least 10¾ inches on each side.

Regardless of amount or quantity, which hazmat class ALWAYS requires placards?

Class 7 (Radioactive) materials, as well as certain other materials like poison gases and explosives, always require placards regardless of quantity.

What does a 'DANGEROUS' placard indicate?

A DANGEROUS placard may be used when transporting 1,001 to 5,000 pounds of two or more classes of hazardous materials that each require different placards.

← CDL Commercial Drivers License General Knowledge Study Materials

CDL Hazardous Materials - General Knowledge Flashcards

Master the CDL Hazardous Materials section with 30 targeted flashcards covering placarding requirements, shipping papers, labels, and driver responsibilities. These cards focus on the most frequently tested concepts on the CDL General Knowledge exam to help you pass with confidence.

30 cards Intermediate Placarding Requirements Shipping Papers & Documentation Labels & Markings Driver Responsibilities & Safety Hazmat Classes & Definitions

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This deck is part of the CDL Commercial Drivers License General Knowledge Unlock — $39.99 for all 7 decks

This deck is included in the CDL Commercial Drivers License General Knowledge Unlock

7 total decks, practice tests, study guides & more

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