Massachusetts Bay Transportation Authority's Request To Amend its Positive Train Control System

DEPARTMENT OF TRANSPORTATION Federal Railroad Administration [Docket No. FRA-2010-0030] Massachusetts Bay Transportation Authority's Request To Amend its Positive Train Control System AGENCY: Federal Railroad Administration (FRA), Department of Transportation (DOT). ACTION: Notice of availability and request for comments. SUMMARY: This document provides the public with notice that, on July 9, 2026, the Massachusetts Bay Transportation Authority (MBTA) submitted a request for amendment (RFA) to its FRA-certified positive train control (PTC) system. FRA is publishing this notice and inviting public comment on the railroad's RFA. DATES: FRA will consider comments received by August 5, 2026. 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 July 9, 2026, MBTA submitted an RFA to its PTC system, the Advanced Civil Speed Enforcement System II, seeking FRA's approval of a temporary outage of MBTA's PTC system to support the reconfiguration of Control Point CP-44 on the Worcester Main Line. 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 this railroad'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. 2026-14335 Filed 7-15-26; 8:45 am] BILLING CODE 4910-06-P