Metro trains will increase service and visit every station at least every 15 minutes after the Washington Metropolitan Area Transit Authority announced updated rail service times earlier this week.

Starting September 12, WMATA will close six Yellow and Blue line stations south of National Airport through the middle of October as they conduct maintenance on the southern portions of those lines and repair the Yellow Line tunnel through next March. The Yellow Line will cease operations until March, but Green and Blue line trains will service Yellow Line stations with increased frequency.

The service updates come after WMATA reintroduced a dozen 7000-series trains to its fleet last week.

“Providing customers with more travel options and more frequent service delivers on our priorities for the region,” General Manager and Chief Executive Officer Randy Clarke said in a release. “As we invest in infrastructure, open new stations and maintain our existing system, we move towards safer, more reliable service.”

Green Line wait times will drop from 15 minutes to eight minutes, as the Yellow Line closes for repairs. The Blue, Silver and Orange lines wait times will drop to every 15 minutes, while trains running between Rosslyn and Stadium-Armory will run every four minutes. The Red Line, which operates every 10 minutes, will remain unchanged.

Free shuttles will be available to commuters while Yellow Line stations close.