Action
Notice of availability and request for comments.
Summary
This document provides the public with notice that on June 7, 2024, 21 host railroads submitted a joint request for amendment (RFA) to their FRA-approved Positive Train Control Safety Plans (PTCSP), to seek FRA's approval of proposed Onboard Software Version 6.5.4. As this joint RFA involves requests for FRA's approval of proposed material modifications to FRA-certified PTC systems, FRA is publishing this notice and inviting public comment on the railroads' joint RFA to their PTCSPs.