Metra train lines halted/delayed on Monday due to 'positive train control system outage'.

Metra train lines are halted or delayed on Monday due to a 'positive train control system outage', impacting Union Pacific North, Milwaukee District North, Union Pacific Northwest, Milwaukee District West, Southwest, Rock Island, and Metra Electric lines. The extent of delays varies by train line, and updates can be found at metra.com. No further information is available at this time, and this is a developing story.