WASHINGTON, Aug. 1 -- Federal Railroad Administration has issued a notice called: Railroads' Joint Request To Amend Their Positive Train Control Safety Plans.

The notice was published in the Federal Register on Aug. 1 by Carolyn R. Hayward-Williams, Director, Office of Railroad Systems and Technology.

Summary: This document provides the public with notice that, on July 25, 2025, 21 host railroads submitted a joint request for amendment (RFA) to their FRA-approved Positive Train Control Safety Plans (PTCSP) to implement onboard software Version 6.5.5.0, which would require modifications to the Interoperable Train Control (ITC) Positive Train Control (PTC) Concept of Operations and to the human-machine interface (HMI). As this joint RFA may...