Amtrak's Request To Amend Its Positive Train Control System

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This document provides the public with notice that, on April 16, 2025, the National Railroad Passenger Corporation (Amtrak) submitted a request for amendment (RFA) to one of its FRA-certified positive train control (PTC) systems to temporarily disable the system for a period of one to two hours in support of the installation and testing of a new Back Office Subsystem environment upgrade. FRA is publishing this notice and inviting public comment on the railroad's RFA.