As temperatures plummeted into the low 30s Monday night, the commuter rail experienced a number of delays.
Six lines, including the Needham, Middleborough, Kingston, Greenbush, Fairmount, and Providence/Stoughton lines, were delayed because of the late arrival of equipment, according to MBTA alerts.
Keolis spokesman Mac Daniel said that a disabled train in Stoughton was the cause for residual delays, which were up to 70 minutes behind schedule for that line, according to the MBTA website.
In addition, a signal issue on the Providence/Stoughton line added to the waits.
The Franklin line was delayed 10 to 15 minutes from South Station, and the Framingham/Worcester line was delayed 20 to 25 minutes from South Station.
All other lines experienced delays between 15 and 30 minutes.