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      Silver Line train derails going 5 mph

      A Silver Line train going 5 mph derailed this week near Wolf Trap while conducting a test, the Washington Post reports.

      No one was hurt during the incident.

      The train's front left axle derailed after hit a derailer, a device designed to derail a train if it goes beyond a point it's supposed to go, the Post reports.

      Authorities are now investigating the incident.

      READ MORE at The Washington Post.