Action
Notice of availability and request for comments.
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.