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Railroads' Requests To Amend Their Positive Train Control Safety Plans and Positive Train Control Systems

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Federal Railroad Administration (FRA), Department of Transportation (DOT).


Notice of availability and request for comments.


This document provides the public with notice that three host railroads recently 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.


FRA will consider comments received by June 21, 2021. FRA may consider comments received after that date to the extent practicable and without delaying implementation of valuable or necessary modifications to PTC systems.


Comments: Comments may be submitted by going to and following the online instructions for submitting comments.

Instructions: All submissions must include the agency name and the applicable docket number. The relevant PTC docket numbers for the host railroads that filed RFAs to their PTCSPs are cited above and in the SUPPLEMENTARY INFORMATION section of this notice. For convenience, all active PTC dockets are hyperlinked on FRA's website at​train-control/​ptc/​ptc-annual-and-quarterly-reports. All comments received will be posted without change to;​ this includes any personal information.

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Gabe Neal, Deputy Staff Director, Signal, Train Control, and Crossings Division, telephone: 816-516-7168, email:

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In general, Title 49 United States Code (U.S.C.) Section 20157(h) requires FRA to certify that a host railroad's PTC system complies with 49 CFR part 236, subpart I, before the technology may be operated in revenue service. Before making certain changes to an FRA-certified PTC system or the associated FRA-approved PTCSP, a host railroad must submit, and obtain FRA's approval of, an RFA to its PTCSP under Title 49 Code of Federal Regulations (CFR) Section 236.1021.

Under 49 CFR 236.1021(e), FRA's regulations provide that FRA will publish a notice in the Federal Register and invite public comment in accordance with 49 CFR part 211, if an RFA includes a request for approval of a material modification of a signal and train control system. Accordingly, this notice informs the public that host railroads' recent RFAs to their PTCSPs are available in their respective public PTC dockets, and this notice provides an opportunity for public comment on these RFAs.

On May 26, 2021, the following three host railroads jointly submitted an RFA to their respective PTCSPs for their Interoperable Electronic Train Management Systems (I-ETMS): Central Florida Rail Corridor (CFRC), North County Transit District (SDNX), and Trinity Railway Express (TRE). Their joint RFA is available in Docket Numbers FRA-2010-0044, FRA-2010-0049, and FRA-2011-0104.

Interested parties are invited to comment on any RFAs to railroads' PTCSPs by submitting written comments or data. During FRA's review of railroads' RFAs, FRA will consider any comments or data submitted within the timeline specified in this notice and to the extent practicable, without delaying implementation of valuable or necessary modifications to PTC systems. See 49 CFR 236.1021; see also 49 CFR 236.1011(e). Under 49 CFR 236.1021, FRA maintains the authority to approve, approve with conditions, or deny railroads' RFAs to their PTCSPs at FRA's sole discretion.

Privacy Act Notice

In accordance with 49 CFR 211.3, FRA solicits comments from the public to better inform its decisions. DOT posts these comments, without edit, including any personal information the commenter provides, to, as described in the system of records notice (DOT/ALL-14 FDMS), which can be reviewed at​privacy. See​privacy-notice for the privacy notice of To facilitate comment tracking, we encourage commenters to provide their name, or the name of their organization; however, submission of names is completely optional. If you wish to provide comments containing proprietary or confidential information, Start Printed Page 31371please contact FRA for alternate submission instructions.

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Issued in Washington, DC.

Carolyn R. Hayward-Williams,

Director, Office of Railroad Systems and Technology.

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[FR Doc. 2021-12294 Filed 6-10-21; 8:45 am]