Petitions for Interim Standards for Rail Tank Cars Used to Transport Toxic-by-Inhalation Hazard Materials

Summary: This document solicits comments on the merits of two petitions for rulemaking filed with PHMSA seeking promulgation of an interim standard for railroad tank cars used to transport toxic by inhalation hazard (TIH) materials. One petition was filed jointly by the American Chemistry Council, American Short Line and Regional Railroad Association, Association of American Railroads, Chlorine Institute, and Railway Supply Institute, and a second petition was filed by The Fertilizer Institute.