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?
- 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?
- Explosives.
- What materials fall under Class 2?
- Gases (compressed, liquefied, or dissolved under pressure).
- Class 3 hazardous materials are categorized as what?
- Flammable liquids.
- What hazard class includes flammable solids?
- Class 4.
- Class 5 hazardous materials are which of the following?
- Oxidizers and organic peroxides.
- What materials are classified under Class 6?
- Poisons (toxic and infectious substances).
- Class 7 hazardous materials are what?
- Radioactive materials.
- What hazard class are corrosives?
- Class 8.
- Class 9 materials are labeled as what?
- Miscellaneous hazards (materials that do not fit in other classes but are still hazardous).
- What is a placard?
- 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?
- On all four sides of the vehicle, front, rear, and both sides.
- What is the required size of a placard on a vehicle?
- 10.75 inches on each side (approximately 11 inches square).
- What information must appear on a shipping paper for hazmat?
- 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?
- In the driver's immediate possession, on the driver's seat, or within arm's reach while driving.