At what minimum quantity of hazardous materials in a single package requires a placard regardless of hazard class?

Any single package containing 1,001 lbs or more of a Table 2 hazardous material requires a placard. For Table 1 materials, any amount requires a placard.

Where must hazmat placards be placed on a vehicle?

Placards must be placed on the front, rear, and both sides of the vehicle — four placards total.

What shape are hazmat placards required to be?

Hazmat placards must be diamond-shaped (square on point).

What is the minimum size requirement for hazmat placards?

Hazmat placards must be at least 10¾ inches (273 mm) on each side.

Which hazard class always requires a placard regardless of the quantity being transported?

Table 1 hazardous materials — including explosives, poison gas, and radioactive materials — always require placards in any amount.

← CDL Commercial Drivers License General Knowledge Study Materials

CDL Hazmat Rules – General Knowledge Flashcards

Master the hazardous materials rules tested on the CDL General Knowledge exam with these 32 targeted flashcards. Topics include placarding requirements, shipping papers, emergency response, and driver responsibilities. Ideal for CDL candidates preparing for the Hazmat endorsement and general knowledge sections.

33 cards Intermediate Placarding Requirements Shipping Papers & Documentation Driver Responsibilities & Safety Loading, Unloading & Compatibility Hazmat Classes & Identification

Unlock Full Study Bundle — $39.99

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

See Full Exam — $39.99