Back Bay to Forest Hills

From the passenger station with platforms on all tracks at Back Bay (MP 227.6), the Amtrak line swings south-southwest, CETC, overhead electrification, with speed limit 30 mph, past MP 227.0, where the speed limits rise to 100 mph for passenger trains and 45 mph for freights, the MBTA passenger station at Ruggles Street (MP 226.5), crossovers at Plains (MP 224.3), where freight speeds drop to 20 mph, the MBTA passenger station with platforms on all tracks at Forest Hills  (MP 223.7), and the junction at Forest (MP 223.5), where freight speed revert to 45 mph, the Main Line turns south and the Needham Branch turns away southwest.