A CTA Purple Line train passes through Sheridan Station and immediately meets another Purple Line train heading in the opposite direction. Though the first train is an express and does not work Sheridan, the second train does make a stop. Sheridan sees Purple Line trains using the outer tracks during weekday rush hour service, but they only work Sheridan when there are games or other events at Wrigley Field (as was the case when this was filmed) | Trainiac Productions