Action
Notice of availability and request for comments.
Summary
This document provides the public with notice that, during March, April, and early May of 2021, nineteen host railroads submitted requests for amendments (RFA) to their FRA-approved Positive Train Control Safety Plans (PTCSP). As these RFAs may involve requests for FRA's approval of proposed material modifications to FRA-certified positive train control (PTC) systems, FRA is publishing this notice and inviting public comment on railroads' RFAs to their PTCSPs.