 WTOP News. Some Metro riders are dealing with headaches as a result of summer construction. Now the transit agency says it's working to make things better for people along the red line between Tacoma and Glenmont stations. That stretch of rail is currently closed with shuttle buses replacing trains. Metro now says that starting on Monday, new express loops will speed up the shuttle bus service. The agency says it's working to reduce bus congestion at the Silver Spring Transit Center as well.