MARC riders:

8:30 A.M. Update: Penn Line train 419 is running 10 minutes late, while Penn Line train 517 is 17 minutes late.

7:55 A.M. Update: Penn Line train 517 is now running 17 minutes late.

7:45 A.M. Update: Penn Line train 511, which departed Odenton 36 minutes late, is overcrowded, according to the MTA.

7:35 A.M. Update: Brunswick Line train 876 is running 10 minutes late as it approaches Gaithersburg.

7:10 A.M. Update: Penn Line train 511 left Baltimore 25 minutes late after having mechanical problems, according to the MTA. And Amtrak train 151 left Perryville 15 minutes late.

Full service is expected on the Camden and Brunswick Lines, but Penn Line trains will run on a reduced “S” schedule on Monday, according to the Maryland Transit Administration. Penn Line trains designated with an “S” under the train number will operate. Find a complete schedule at

The agency had announced on Sunday that all three MARC lines would operate full service on Monday, but amended that on Sunday night to say that there would be reduced Penn Line service after Amtrak found numerous problems with the railroad. Amtrak asked them to reduce Penn Line service so Amtrak could restore full operations faster.

Power is still out at several MARC stations, so passengers who ride pre-dawn or late evening trains are encouraged to bring a flashlight to the station in case lighting has not been restored.

Penn Line riders should also note that Amtrak train 151 (scheduled to arrive in Perryville at 6:50 a.m.) is severely delayed, according to the MTA. The last southbound Penn Line train departing Perryville this morning will be train 517 at 6:30 a.m.

VRE riders:

The Virginia Railway Express is operating its full schedule on Monday. However, due to commercial power outages along the Fredericksburg Line, there could be some delays on that route due to signal outages.