The Hazardous Materials Regulations (HMR) CFR 49 Parts 100 To 185 are issued by the U.S. Department of Transportation (USDOT) and govern the transportation of hazardous materials in interstate, intrastate, and foreign commerce.

The primary goal of the HMR is the safety of the public and those whose occupations involve preparing hazardous materials for transportation or transporting them. To minimize risks, USDOT has issued specific requirements for shipments of hazardous materials in transportation. The HMRs are divided into four general areas:

* hazardous materials identification and classification;

* hazard communication; [Shipping papers, markings, labels, and placards are used to communicate hazards of the materials to emergency responders, as well as, to those who handle hazardous materials routinely];

* packaging requirements; and

* operational rules.

A basic understanding of the HMR is required for compliance with the regulations. The HMR Workbook is designed to assist you with the first step — learning to locate specific parts, subparts and references within the HMR.

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