"Human error" caused a Metro train to derail just after midnight on June 16, according to Metro officials, but engineers from Arup, a firm hired to assist in the investigation, say that Metro needs to implement a safer lubrication system on the rails. Pictures from the investigation, released by Metro at a press conference this afternoon, show gouge marks on
the concrete and rail along the stretch of track where the derailment occurred. Metro plans to test the track "to verify its structural int
