(Washington, DC - David Schultz, WAMU News) One year ago today, a Washington, DC Metro train slammed into the back of a stopped train. Nine people died and dozens were injured in the deadliest crash in the capital system's history. Since then, Metro has made changes, but it's not clear what is making the ride for passengers safer. In a series of reports on the year since the crash, David Schultz looks at whether Metro is safer than it was one year ago. Earlier, WAMU News reported on the debate over federal regulation of transit started by this crash and the feelings of Capital residents, some of whom see little signs of change.