The FTA issues Special Directive 18-1 to require the New York State Department of Transportation (NYSDOT), Public Transportation Safety Board (PTSB) to address safety findings identified through FTA’s 2017 Triennial Audit of its State Safety Oversight (SSO) Program. This Special Directive mandates that PTSB: (1) submit Corrective Action Plans (CAPs) to FTA that address findings from FTA’s 2017 Triennial Audit and obtain FTA approval of the CAPs within 60 days of the issuance of this directive, and (2) conduct an independent triennial audit of the Metropolitan Transportation Authority’s (MTA) New York City Transit (NYCT) and Niagara Frontier Transportation Authority (NFTA) rail transit systems within 180 days of the issuance of this directive.