National Propane Gas Ass'n v. United States Department of Transportation
This case involves a challenge by plaintiffs National Propane Gas Association, Northwest Butane Gas Co., and Huffhines Gas, Inc. against the United States Department of Transportation (DOT) and the Research and Special Programs Administration (RSPA). The plaintiffs sought to stay and enjoin the enforcement of RSPA's "Final Rule" and its interpretation of the "Attendance Regulation," alleging violations of the Administrative Procedure Act and the Regulatory Flexibility Act. Both regulations pertain to safety requirements for cargo tank motor vehicles transporting liquefied compressed gases, particularly concerning emergency discharge control systems and operator presence during unloading. The court sided with the defendants, upholding both the Final Rule and RSPA's interpretation of the Attendance Regulation. The ruling affirmed that RSPA's actions were within its statutory authority, were not arbitrary or capricious, and complied with the RFA, based on reasoned decision-making in response to widespread industry noncompliance and potential safety risks.