Since June 2009, when two Red Line trains collided and killed nine people due in part to malfunctions in the ATC system, all Metro trains have been manually operated. The current state of manual operation has led to heavily degraded service, with new manual requirements such as absolute blocks, speed restrictions, and end-of-platform stopping leading to increased headways between trains, increased dwell time, and worse on-time performance. Metro originally planned to have all trains be automated again by 2017, but those plans were shelved in early 2017 in order to focus on more pressing safety and infrastructure issues.