PHMSA's Offices of Pipeline and Hazmat Safety Standards & Rulemaking utilize the process of rulemaking to propose and adopt changes to regulations. The process of rulemaking can include: proposing and finalizing rules, the division posts notices, advisory bulletins, special permits and state waivers, interpretations, and NTSB recommendations. Additionally, the general public may participate in the rulemaking process by filing written comments on any rulemaking document that asks for comments, participate in a public meeting, or file a petition for rulemaking that asks us to add, amend, or delete a regulation. This section provides information and links to recently published notices of proposed rulemaking, final rules, and public meetings.