Some trains will skip Georgia Avenue.
The Greenbelt station will be open during the Sunday exercise.
They outline concerns about local impact and challenge value of the HOT lanes project.
Trains are single tracking between Prince George's Plaza and Georgia Avenue stations.
An alert said normal service has been restored on the Green Line.
Metro trains aren't running from College Park to Greenbelt, but MARC service has resumed.
It's a hybrid event for driving and parking in the District on Thursday.
Sunglasses, pins and #newtrain themed fans were just some of the goodies Metro has given away to celebrate the debut of its new 7000-series railcars.
Rolling street closures due to protesters in area of 14th Street and Constitution Avenue for part of Tuesday morning.
A ride in car 7000 gives clues as to how passengers will deal with the new design.