Useful Acronyms and Abbreviations

ADR/RID European Road/Rail Conventions (govern ground transport of dangerous goods throughout Europe)
CCC Sub-Committee on Carriage of Cargoes and Containers (IMO)
CEN Committee on European Normalization
COHMED Cooperative Hazardous Materials Enforcement Development

Committee of Experts or


United Nations Committee of Experts on the Transport of Dangerous Goods and on the Globally Harmonized System of Classification and Labelling of Chemicals
DG Dangerous Goods (more or less the international equivalent of the US term "hazardous materials")
DGP ICAO Dangerous Goods Panel
DGR IATA Dangerous Goods Regulations
E & T Group Editorial &Technical Group (IMO)
ECOSOC UN Economic and Social Council
ESPH Evaluation of Safety and Pollution Hazards of Chemicals (IMO)
GESAMP Joint Group of Experts on the Scientific Aspects of Marine Environment Protection
GHS Globally Harmonized System of Classification and Labelling of Chemicals (is variously used either in reference to the UN GHS Sub-Committee or the actual publication of that Sub-Committee which is also informally called the Purple Book)
Hazmat Hazardous Materials (as designated by the Secretary of Transportation through delegation to PHMSA, these materials are regulated in commercial transportatoin because they are capable of posing an unreasonable risk to health, safety and property)
HM see "Hazmat" above
HMR Hazardous Materials Regulations (a portion of 49 CFR, it governs commercial transportation of hazardous materials by all modes within US jurisdiction, promulgated by PHMSA)
IAEA International Atomic Energy Agency

International Air Transport Association

ICAO International Civil Aviation Organization
ILO International Labour Organization
IMDG CODE International Maritime Dangerous Goods Code
IOMC InterOrganization Program for Sound Management of Chemicals
MEPC Marine Environmental Protection Committee (IMO)
MSC Marine Safety Committee (IMO)
NAFTA LTSS Nafta Land Transportation Standards Subcommitte
OECD Organization for Economic Cooperation & Development
PHMSA Pipeline and Hazardous Materials Safety Administration of the US Department of Transportation (promulgates the HMR and otherwise manages the Federal hazardous materials transportation safety program and serves as the focal point and as the US "competent authority" for international dangerous goods transportation issues)
PPR Sub-Committee on Pollution Prevention and Response (IMO)
TDG Transport of Dangerous Goods (frequently used in reference to the UN TDG Sub-Committee on the Transport of Dangerous Goods)
Technical Instructions ICAO Technical Instructions for the Safe Transport of Dangerous Goods by Air
TI See "Technical Instructions" above
UN United Nations
UNCED UN Conference on Environment & Development
WHO World Health Organization
WSO World Safety Organization


If you know of any other acronyms that should be listed here, please email to