This final rule establishes standards for transporting portable tanks containing certain hazardous materials in container-on-flatcar (COFC) or trailer-on-flatcar (TOFC) service, without obtaining prior approval from the Federal Railroad Administration...

In this final rule, RSPA is correcting editorial errors, making minor regulatory changes and, in response to requests for clarification, improving the clarity of certain provisions to the Hazardous Materials Regulations (HMR). In addition, RSPA is...

RSPA is extending the time period, from August 31, 1993 to April 21, 1994, during which cargo tank motor vehicles may continue to be constructed to MC 306, MC 307, MC 312, MC 331, and MC 338 specifications. The extension is based on-requests from the...

 In response to petitions for reconsideration, this final rule provides regulatory relief from the final rule for materials posing a hazard due to their being offered for transportation or transported at elevated temperatures. It offers...