This graphic shows train locations on Boston's Red, Orange, and Blue Subway lines for Tuesday February 4, 2014. The left map shows train locations relative to stops along their line at a single point in time. The right plot shows each station as a vertical line, with time going from top to bottom. Each horizontal slice shows where each train is at that point in time. Slower trains have steeper lines. Hover over the right plot to show the train locations at that point in time. Click on a train's line or dot to focus on just that train.