Industry Terms
- DG – Dangerous Goods
- DGR – Dangerous Goods Regulations
- ERG – Emergency Response Guidebook
- HM – Hazardous Materials (“HazMat”)
- HMR – Hazardous Materials Regulations
- NA ID # – North American Identification Number (refers to four-digit codes that represent a proper shipping name of a hazardous material, used only in U.S., recognized in Canada; not for international use)
- NOS or N.O.S. – not otherwise specified (refers to generic hazardous materials)
- RQ – Reportable Quantity. Refers to materials designated as hazardous substances by EPA and regulated by DOT when transported in excess of certain threshold quantities that are defined in Tables 1 and 2 to Appendix A of 49 CFR 172.101.
- SP or DOT-SP – U.S. DOT Special Permit, an alternative way to comply with regulations
- UN ID # – United Nations Identification Number (refers to four-digit codes that represent an internationally recognized proper shipping name of a hazardous material)
- VOCs – Volatile Organic Compounds – emissions or vapors from petroleum products
Agencies & Organizations
- DOT or U.S. DOT – United States Department of Transportation
- EPA – Environmental Protection Agency
- FMCSA – Federal Motor Carrier Safety Administration
- GPO – Government Printing Office
- IATA – International Air Transport Association – refers to both the organization and its regulations for air transport
- ICAO – International Civil Aviation Organization – refers to both the organization and its regulations for air transport
- IMDG – International Maritime Dangerous Goods Code
- IMO – International Maritime Organization
- MARAD – Maritime Administration
- OSHA – Occupational Safety and Health Administration
- PHMSA – Pipeline and Hazardous Materials Safety Administration
- TC – Transport Canada
- TDG – Transport Dangerous Goods Code – the Canadian hazmat transportation regulations
- TSB – Canadian Transportation Safety Board
- USCG – United States Coast Guard
Rulemaking Terms
- ANPRM – Advanced Notice of Proposed Rulemaking
- EO – Emergency Order
- FR – Final Rule or Federal Register, depending upon how it is used
- MAP-21 – Moving Ahead for Progress in the 21st Century – a collection of requirements set forth by the U.S. Congress, which mandates that the agencies of DOT must implement certain new procedures or requirements, among other things, by a specific date.
- NPRM – Notice of Proposed Rulemaking
- SA – Safety Advisory
