X3 HazMat is a compliance tool, not legal advice, and is not affiliated with FMCSA, PHMSA or USDOT. Reference data is curated from the 49 CFR 172.101 Hazardous Materials Table, the 49 CFR 177.848 segregation table and the ERG, and covers commonly shipped materials — always confirm against the current regulation and the full Hazardous Materials Table for your exact shipment. Placards must be the correct size, durability and placement per 49 CFR Part 172 Subpart F.