
Ashraf KhalilThe Associated PressWASHINGTON (AP) – Washington’s regional Metro system abruptly pulled more than half its fleet of trains from service early in the morning hours Monday, Oct. 18, over a lingering problem with the wheels and axles that caused a dramatic derailing last week. The ruling promises to complicate daily travel and commutes for thousands of riders for an unspecified length of time while the National Transportation and Safety Board investigates the issue.The Metro authority’s safety commission ordered the withdrawal of the entire 7000-series line of trains at dawn. The Kawasaki-made 7000-series are the newest set of trains in service and the 748 cars comprise about 60% of the fleet.NTSB Chair Jennifer Homendy told reporters Monday that a design f