Red Line: Delays of about 10 minutes due to police activity at Park St.#mbtaalert#mbta

Red Line Braintree Branch: Delays of about 10 minutes due to police activity at JFK/UMass.#mbtaalert#mbta

Red Line Braintree Branch: Delays of about 10 minutes due to a disabled train at Quincy Adams. #mbtaalert#mbta

Orange Line: Delays of about 15 minutes due to a signal problem near Ruggles. Trains may stand by at stations.#mbtaalert#mbta

Orange Line: Delays of about 15 minutes due to an unauthorized individual on the tracks at Back Bay. Transit Police responded. Trains may be asked to stand by at stations. #mbtaalert#mbta

Red Line: Delays of about 15 minutes due to a passenger in need of medical attention at Harvard. EMS is on-scene. Trains may stand by at stations#mbtaalert#mbta

Blue Line: Delays of about 10 minutes due to a signal problem near Wood Island. Riders can use the SL3 between Airport and South Station for alternate service.#mbtaalert#mbta

Blue Line: Delays of about 10 minutes while a maintenance train inspects the overhead wires between Airport and Wonderland. Trains may stand by at stations.#mbtaalert#mbta

Red Line: Delays of about 15 minutes due to police activity at South Station.#mbtaalert#mbta

Red Line: delays of up to 10 minutes due to an earlier disabled train at Quincy Adams.#mbtaalert#mbta

Red Line Ashmont Branch: Delays of about 15 minutes due to a disabled train at Savin Hill. Trains may stand by at stations.#mbtaalert#mbta

Blue Line: Delays of about 15 minutes due to a signal problem at Maverick. Trains may stand by at stations.#mbtaalert#mbta

Green Line: Delays of about 15 minutes due to a disabled train at Park Street. Service is standing by.#mbtaalert#mbta

Blue Line: Delays of about 15 minutes due to a switch problem at Orient Heights. Service is standing by.#mbtaalert#mbta

Red Line Braintree Branch: Delays of about 15 minutes due to an earlier disabled train at Quincy Adams.#mbtaalert#mbta

Red Line Ashmont Branch: Delays of about 15 minutes after a disabled train was removed from service at Ashmont.#mbtaalert#mbta

Green Line: Delays of about 10 minutes due to police activity at Hynes.#mbtaalert#mbta

Red Line: Delays of about 25 minutes due to an earlier disabled train at JFK/UMass.#mbtaalert#mbta

Red Line: Delays of about 15 minutes due to a disabled train near North Quincy. Trains may stand by at stations.#mbtaalert#mbta

Blue Line: Delays of about 10 minutes due to a disabled train at Orient Heights.#mbtaalert#mbta

Orange Line: Trains may travel at reduced speeds or stand by at stations while maintenance personnel conduct track inspections at Wellington.#mbtaalert#mbta

Blue Line: Delays of about 10 minutes while a maintenance train inspects the overhead wires between Airport and Wonderland. Trains may stand by at stations.#mbtaalert#mbta

Red Line Ashmont Branch: Delays of about 10 minutes due to a disabled train at Ashmont.#mbtaalert#mbta

Blue Line: Delays of about 10 minutes while we remove a disabled train at Revere Beach from the main line.#mbtaalert#mbta

Red Line: Delays of about 10 minutes due to a signal issue near Quincy Center.#mbtaalert#mbta

Blue Line: Delays of about 10 minutes due to an earlier disabled train at Orient Heights. Service is proceeding.#mbtaalert#mbta

Orange Line: Delays of about 15 minutes due to the late completion of overnight track work at Wellington. #mbtaalert#mbta

Green Line B Branch: Shuttle buses are replacing service between Babcock St and Boston College due to a disabled train at Boston College. Expect delays as shuttles are dispatched.#mbtaalert#mbta

Green Line B Branch: Delays of about 25 minutes due to a disabled train at Boston College. Service is standing by.#mbtaalert#mbta

Red Line Braintree Branch: Delays of about 15 minutes due to police activity at Braintree. Trains may stand by at stations.#mbtaalert#mbta

Red Line: Delays of about 15 minutes due to a disabled train at Central.#mbtaalert#mbta

Orange Line: All trains at Wellington are operating on the northbound (Oak Grove) track due to a track problem. Riders may experience delays while personnel work to overcome the issue.#mbtaalert#mbta

Orange Line: Shuttle buses are replacing service between Oak Grove and Wellington due to a power problem at Wellington. Please expect delays as shuttles are dispatched.#mbtaalert#mbta

Orange Line: Shuttle buses are replacing service between Oak Grove and Wellington due to a power problem at Wellington. Please expect delays as shuttles are dispatched.#mbtaalert#mbta

Orange Line: All trains at Wellington are operating on the northbound (Oak Grove) track due to a track problem. Riders may experience delays while personnel work to overcome the issue.#mbtaalert#mbta

Orange Line: delays of up to 15 minutes due to a track problem at Wellington. Trains may stand by at stations.#mbtaalert#mbta

Red Line: Delays of about 10 minutes due to an earlier disabled train at Harvard.#mbtaalert#mbta

Orange Line: delays of up to 15 minutes due to disabled train at Wellington. #mbtaalert#mbta

Red Line: Delays of about 10 minutes due to a disabled train at Park St.#mbtaalert#mbta

Orange Line: Delays of about 10 minutes due to a disabled train at North Station.#mbtaalert#mbta

Orange Line: Delays of about 15 minutes due to a medical emergency at Sullivan Square. Trains may stand by at stations.#mbtaalert#mbta

Orange Line: Delays of about 15 minutes due to a disabled train at Mass Ave. Trains may stand by at stations.#mbtaalert#mbta

Red Line: Delays of about 25 minutes due to a disabled train near Central. Trains may stand by at stations.#mbtaalert#mbta

Red Line: Delays of about 15 minutes due to a disabled train at Kendall. Trains may stand by at stations.#mbtaalert#mbta

Orange Line: Delays of about 15 minutes due to an earlier disabled train experiencing a mechanical issue at Jackson Square.#mbtaalert#mbta

Blue Line: Delays of about 10 minutes while a maintenance train inspects the overhead wires between Airport and Wonderland. Trains may stand by at stations.#mbtaalert#mbta

Blue Line: Delays of about 20 minutes due to a signal problem at Orient Heights. Trains may stand by at stations.#mbtaalert#mbta

Blue Line: Delays of about 15 minutes due to a signal problem between Orient Heights and Suffolk Downs. Trains may stand by at stations.#mbtaalert#mbta

Orange Line: Delays of about 15 minutes due to a medical emergency at Malden Center.#mbtaalert#mbta

Blue Line: Delays of about 10 minutes while a maintenance train inspects the overhead wires between Airport and Wonderland. Trains may stand by at stations.#mbtaalert#mbta