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Notice of availability and request for comments.

This document provides the public with notice that, on March 18, 2024, the Long Island Rail Road (LIRR) submitted a request for amendment (RFA) to its FRA-certified positive train control (PTC) system to establish an Advanced Civil Speed Enforcement System II (ACSES II) Construction Zone to support the building of a new interlocking and associated signal system changes on LIRR's Mainline near Floral Park at Milepost (MP) 15.5. According to the RFA, the Construction Zone is planned be implemented on May 10, 2024, and is scheduled to not exceed a three-month duration. FRA is publishing this notice and inviting public comment on LIRR's RFA to its PTC system.

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