Metro said Monday that riders should expect reduced rail services through the end of the year.
Nearly 75% of subway stations, many of which are serviced by several rail lines, have trains arriving at least every 10 to 12 minutes, the regional transit agency said in a statement.
Metro said it has not set a deadline to return all of its 7000-series railcars to service and is waiting for parts for the older 6000-series railcars due to global supply chain challenges.
“As we get more parts, we will return more of the 6000-series railcars to service for our customers during December,” Metro General Manager Paul J. Wiedefeld said. “While we know service is not as frequent as customers would prefer, we will add each train as it becomes available to help incrementally improve service reliability and frequency.”
Metro removed all 748 of its 7000-series railcars last month after a National Transportation Safety Board investigation found that faulty wheel assemblies on the railcars caused a Blue Line train to derail Oct. 12 near the Arlington Cemetery station.
The train’s wheels shifted too far apart on their axles, a recurring problem with the railcars, the NTSB found.