header bg

Question:

Which of these tells you that cargo contains hazardous materials?

A Both of these answers are correct.
Explaination

Federal regulations require shippers to warn drivers and others about the nature of the hazardous materials they are shipping. The shipper affixes US DOT-compliant HazMat labels to the packages and supplies the driver with the appropriate placards to attach to his or her vehicle. The shipper also notes the hazardous nature of the materials on the shipping papers. [49 CFR 172.400], [49 CFR 172.407]