Notice
All Final Rules published in the Federal Register through the previous current month, with current effective dates, have been included in this version of 49 CFR Parts 100 - 185. Users are reminded that final rules published may not be in effect and that any recently issued rule may have transitional provisions specifying when permissive compliance is authorized and mandatory compliance is required. Users should refer to the Final Rules List and to the specific final rule to determine the applicability of the revised regulatory text. To view a listing of Final Rules published since October 1, 2001, in both Text and PDF format, see the Final Rules List. To use a version of the 49 CFR Parts 100-185 revised as of October 1, 2001 (with no updates), please refer to our link to the Government Printing Office web site found under the Rules and Regulations section in this site.

If you have specific questions and/or concerns regarding RSPA's Hazardous Materials Regulations, 49 CFR Parts 100 - 185, you may contact RSPA's Hazardous Materials Information Center: by calling 1-800-HMR-4922 (1-800-467-4922); by writing to the Information Center, Office of Hazardous Materials Standards, Research and Special Programs Administration, U.S. Department of Transportation, 400 Seventh Street, S.W., Washington, D.C. 20590-0001; or by E-Mail at infocntr@rspa.dot.gov.

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