Which resource should you consult to determine if a material is hazmat under DOT rules?

• A. The DOT HazMat Table (49 CFR 172.101)
• B. The EPA Hazardous Waste List
• C. The OSHA Hazard Communication Standard
• D. The International Maritime Dangerous Goods Code

Answer: (A)

To know if a material is hazmat under DOT rules, you use the DOT HazMat Table found in 49 CFR 172.101. This official table lists materials that are regulated for transportation, showing their hazard class, identification numbers, packing requirements, and any special handling or packaging rules. It’s the authoritative reference shippers and carriers rely on to determine hazmat status and the specific shipping conditions. Other resources serve different contexts—EPA’s list covers hazardous waste, OSHA focuses on workplace chemical safety labeling and communication, and the International Maritime Dangerous Goods Code covers sea transportation—so they don’t determine DOT hazmat status. If a material is listed, it’s hazmat and must follow the corresponding rules; if not, you consult other DOT provisions, but the HazMat Table is the primary source for making the determination.