Hazardous materials classification, placarding, and safe handling rules tested on the CDL hazmat endorsement exam.
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- What are the nine hazard classes for hazardous materials?
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Class 1 (explosives), Class 2 (gases), Class 3 (flammable liquids), Class 4 (flammable solids), Class 5 (oxidizers/peroxides), Class 6 (poisons), Class 7 (radioactive), Class 8 (corrosives), Class 9 (miscellaneous hazards).- Class 1 materials are classified as what?
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Explosives.- What materials fall under Class 2?
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Gases (compressed, liquefied, or dissolved under pressure).- Class 3 hazardous materials are categorized as what?
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Flammable liquids.- What hazard class includes flammable solids?
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Class 4.- Class 5 hazardous materials are which of the following?
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Oxidizers and organic peroxides.- What materials are classified under Class 6?
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Poisons (toxic and infectious substances).- Class 7 hazardous materials are what?
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Radioactive materials.- What hazard class are corrosives?
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Class 8.- Class 9 materials are labeled as what?
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Miscellaneous hazards (materials that do not fit in other classes but are still hazardous).- What is a placard?
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A diamond-shaped label that displays the hazard class number and warns of the hazardous cargo being transported.- Where must placards be displayed on a hazmat vehicle?
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On all four sides of the vehicle, front, rear, and both sides.- What is the required size of a placard on a vehicle?
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10.75 inches on each side (approximately 11 inches square).- What information must appear on a shipping paper for hazmat?
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The proper shipping name, hazard class, ID number, packing group, total quantity, and emergency contact information.- Where must shipping papers be kept in a hazmat vehicle?
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In the driver's immediate possession, on the driver's seat, or within arm's reach while driving.
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