What are the placarding requirements for a mixed load of hazardous materials consisting of 5,000 pounds of flammable liquid loaded at one facility and 500 pounds of a corrosive material and 20 pounds of non-flammable gas?

Because all commodities are Table 2 hazardous materials and the aggregate gross weight of all the hazardous materials is over 1,001 pounds, the motor vehicle must be placarded for each hazard category of materials loaded on the vehicle. However, under 172.504(b), DANGEROUS placards may be substituted for specific placards for these materials, unless 2,205 pounds or more of any one Table 2 hazardous material is loaded at one facility. Therefore, FLAMMABLE placards must be displayed on this vehicle because it contains 2,205 pounds or more of flammable liquid loaded at one facility. This vehicle must be placarded either FLAMMABLE, NON-FLAMMABLE GAS, and CORROSIVE or FLAMMABLE and DANGEROUS.