DOT 22 : US Department of Transportation: regulates transportation, including the transportation of hazardous substances. Can also refer to a parallel state organization such as the NY DOT
Environmental Health & Safety, Glossary of Common Laboratory Safety and Hygiene Terms, Columbia University in the City of New York, USA 2008. http://ehs.columbia.edu/Glossary.html, (Lab Sfty and Hyg - Amer) {57}