Federal Railroad Administration June 10, 2024 – Federal Register Recent Federal Regulation Documents

This document provides the public with notice that, on May 30, 2024, Massachusetts Bay Transportation Authority (MBTA) submitted a request for amendment (RFA) to its FRA-approved Positive Train Control Safety Plan (PTCSP) in order to update its Positive Train Control (PTC) Onboard Computer (OBC) to Software Version 11.6. As this RFA involves a request for FRA's approval of proposed material modifications to an FRA-certified PTC system, including changes to address known software errors, FRA is publishing this notice and inviting public comment on MBTA's RFA to its PTCSP.