2025-19691: National Railroad Passenger Corporation's Request To Amend Its Positive Train Control System
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This document provides the public with notice that, on October 3, 2025, National Railroad Passenger Corporation (Amtrak) submitted two requests for amendment (RFA) to its FRA-certified positive train control (PTC) system, the Interoperable Electronic Train Management System (I-ETMS), in order to perform stability and reliability upgrades to its I-ETMS back office subsystem. FRA is publishing this notice and inviting public comment on the railroad's RFAs to its PTC system.
The agency’s own summary, as published.
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