Keep holding tight onto that subway pole. It’s been nearly two years since Metro started driving its trains manually, a safety step after the deadly Fort Totten train crash. But those herky jerky rides will continue for “several years,” according to the agency’s deputy general manager.

Dave Kubicek told The Washington Examiner that manual operations will continue for a number of years because the agency still needs to swap out “well over half” of the safety modules of the type that faltered in the 2009 train crash.