Tolong jelaskan mengenai Coach fleet dari MBTA Commuter Rail

, the MBTA owned 479 coaches. Of these, 403 were in active service, seven being repaired or overhauled, 16 leased to the Connecticut Department of Transportation (ConnDOT) for use on the Hartford Line, and 53 pending disposition or reuse. Coaches whose designations start with BTC (Blind Trailer Coach) are conventional coaches, while those starting with CTC (Control Trailer Coach) are cab cars. Coaches acquired before 1990 were single-level cars with 88 to 127 seats; those since are bilevel cars with 173 to 185 seats. Some coaches are equipped with electronic doors for use on the Old Colony Lines and Greenbush Line, which have full-length high-level platforms at all stops. All BTC-3, CTC-3, BTC-4C, and BTC-4D coaches have restrooms. During winter months, a Ski Train serving Wachusett Mountain runs on the Fitchburg Line, using a coach car which is equipped for carrying bicycles or skis. Three converted coaches – a bike car and two cafe cars – are reserved for the CapeFLYER.

The agency issued a $279 million contract (total project cost of $345 million) for 80 additional Rotem bilevel coaches in September 2019, with delivery expected from September 2022 to June 2024. The contract was later modified to 83 coaches, of which 43 are cab cars. The first four of the 83 bilevel cars arrived in June 2022; they entered service in 2023. An additional procurement of 100 bilevel cars, to be delivered from 2024 to 2027, was postponed due to the COVID-19 pandemic.