The table below lists open petitions for rulemaking that PHMSA has received requesting amendments to the Hazardous Materials Regulations (49 CFR Parts 171-180). The Petition Number (e.g., P-0001), the Docket ID, and the Name of Petitioner are listed, and the links provided to Regulations.gov allow for access and participation to those specific petitions. Regulations.gov is your source for information on the development of Federal regulations and other related documents issued by the U.S. government. Through the site, you can find, read, and comment on regulatory issues that are important to you. Finally, you can also access previously closed petitions on the Regulations.gov site, by entering the appropriate Docket ID in the “Search for Dockets” page.