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Notice of availability and request for comments.

This document provides the public with notice that, on February 10, 2025, Port Authority Trans-Hudson (PATH) submitted a request for amendment (RFA) to its FRA-approved Positive Train Control Safety Plan (PTCSP) to request approval to install an updated software version V3.5.121, which includes Zone Controller (ZC) software, a ZC database, Automatic Train Supervision (ATS) software, and a Carborne Controller (CC) software update. As this RFA involves a request for FRA's approval of proposed material modifications to an FRA-certified positive train control (PTC) system, FRA is publishing this notice and inviting public comment on PATH's RFA to its PTCSP.

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