U.S. DOT Hazmat Classes and Hazmat Route Types
The table below shows the wording used for PC*Miler hazmat routing options, which is derived from industry-standard placarded descriptions of hazardous materials, corresponds to the U.S. Department of Transportation Hazmat classifications.
U.S. DOT Hazmat Classes (corresponding PC*Miler routing options are bolded):
| U.S. DOT Hazmat Class | PC*Miler Routing Option |
|---|---|
Class 1: Explosives |
Explosive |
Class 2: Compressed Gases |
|
2.1: Flammable Gas |
Flammable |
2.2: Non-Flammable Compressed Gas |
Other |
2.3: Poisonous Gas |
Inhalant |
Class 3: Flammable and Combustible Liquid |
Flammable |
Class 4: Flammable Solids |
|
4.1: Flammable Solid |
Flammable |
4.2: Spontaneously Combustible Material |
Flammable |
4.3: Dangerous When Wet Material |
Flammable |
Class 5: Oxidizers |
Other |
Class 6: Poisons |
|
6.1: (part) Inhalation Hazard |
Inhalant |
6.1: (balance) |
Other |
6.2: Infectious Substance (Etiologic agent) [“Biohazard”] |
Other |
Class 7: Radioactive Materials |
Radioactive |
Class 8: Corrosive Liquids |
Corrosive (“Caustic” in PC*Miler 22 and earlier) |
Class 9: Miscellaneous |
Other |
Determining Which Route Type to Use
Hazmat regulations for a particular tunnel on a route should be checked if there is any doubt about which materials are permitted. Regulations may change over time and might not be included in the version of the PC*Miler database that you are currently using. The shipper of hazardous materials is legally responsible for determining the U.S. DOT Hazmat Class for their shipment and communicating that class to the carrier in their shipping papers.