"There are two separate issues causing a slow down on the Blue and Yellow lines. First, due to the weekend maintenance, it is normal to have a speed restriction in place for a couple of days after any major work to ensure everything is working as expected. This restriction is expected to be removed tomorrow.
Second, there is a track circuit problem around Potomac Yard, which is also causing a speed restriction.
There are several people here who ride these lines and said they didn’t experience any delays. Looking at the reports, there are some slowdowns totaling to a loss of about three minutes between Braddock Road and National Airport."
Let us know if the restrictions appear to have been lifted tomorrow