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

Notice of availability and request for comments.

This document provides the public with notice that, on March 15, 2024, the Massachusetts Bay Transportation Authority (MBTA) submitted a request for amendment (RFA) to its FRA-certified positive train control (PTC) system to install Automatic Train Control (ATC) on the final segment of MBTA's Needham Line. The construction zone will cover ATC implementation from the Need Interlocking at Milepost (MP) 11.9 to Control Point (CP) Land at MP 13.8, and is planned to occur from June 20, 2024, to July 22, 2024. FRA is publishing this notice and inviting public comment on MBTA's RFA to its PTC system.

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