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###### Department of Transportation

###### Federal Railroad Administration

          - [Docket Number FRA-2010-0030]

# AGENCY:

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

# ACTION:

Notice of availability and request for comments.

      ( print page 80304)    

# SUMMARY:

This document provides the public with notice that, on September 20, 2024, the Massachusetts Bay Transportation Authority (MBTA) submitted a request for amendment (RFA) to its FRA-certified positive train control (PTC) system to establish a Construction Zone (CZ) during November and December 2024, in order to install Automatic Train Control (ATC) on the final segment of MBTA's Fitchburg Line between CPF-330 and CPF-335. As this RFA may involve a request for FRA's approval of proposed material modifications to an FRA-certified PTC system, FRA is publishing this notice and inviting public comment on MBTA's RFA to its PTC system.

# DATES:

FRA will consider comments received by October 22, 2024. FRA may consider comments received after that date to the extent practicable and without delaying implementation of valuable or necessary modifications to a PTC system.

# ADDRESSES:

*Comments:*                         Comments may be submitted by going to                         *https://www.regulations.gov*                         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 number for this host railroad is Docket No. FRA-2010-0030. For convenience, all active PTC dockets are hyperlinked on FRA's website at                         *https://railroads.dot.gov/​research-development/​program-areas/​train-control/​ptc/​railroads-ptc-dockets.*                         All comments received will be posted without change to                         *https://www.regulations.gov;*                         this includes any personal information.                    

# FOR FURTHER INFORMATION CONTACT:

                        Gabe Neal, Staff Director, Signal, Train Control, and Crossings Division, telephone: 816-516-7168, email:                         *Gabe.Neal@dot.gov.*

# SUPPLEMENTARY INFORMATION:

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 title 49 Code of Federal Regulations (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 PTC Safety Plan (PTCSP), a host railroad must submit, and obtain FRA's approval of, an RFA to its PTC system or PTCSP under 49 CFR 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 or train control system. Accordingly, this notice informs the public that, on September 20, 2024, MBTA submitted an RFA to its PTCSP for its Advanced Civil Speed Enforcement System II (ACSES-II), which seeks FRA's approval of MBTA's request to temporarily disable its ACSES-II system to establish a CZ during November and December 2024, in order to install ATC on the final segment of MBTA's Fitchburg Line between CPF-330 and CPF-335. That RFA is available in Docket No. FRA-2010-0030.                

                    Interested parties are invited to comment on MBTA's RFA by submitting written comments or data. During FRA's review of MBTA's RFA, 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 a PTC system.                     *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 a railroad's RFA 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                     *https://www.regulations.gov,*                     as described in the system of records notice (DOT/ALL-14 FDMS), which can be reviewed at                     *https://www.transportation.gov/​privacy.*                     See                     *https://www.regulations.gov/​privacy-notice*                     for the privacy notice of                     *regulations.gov.*                     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, please contact FRA for alternate submission instructions.                

Issued in Washington, DC.

Carolyn R. Hayward-Williams,

Director, Office of Railroad Systems and Technology.

[FR Doc. 2024-22715 Filed 10-1-24; 8:45 am]

BILLING CODE 4910-06-P