The MBTA launched non-stop service between Worcester and Boston on Monday morning.
The train will run twice a day on weekdays, leaving Worcester at 8:05 a.m. and leaving Boston's South Station at 7:35 p.m.
The station stops are South Station, Back Bay, and Yawkey Way.
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The non-stop train will save approximately 30 minutes for Worcester riders; the previous schedule resulted in approximately an hour and a half trip with as many as 16 stops.
Other upgrades to the Worcester/Framingham line include "de-stressing" the rail which will "cut the need for speed restrictions during periods of sustained, extreme heat; installation of new rail, and efforts to make the Commuter Rail system more resilient during winter weather," according to the Massachusetts Department of Transportation.
More than 27,000 new tires will be installed on trains beginning in March and will help move trains more efficiently and end speed restrictions.