A CTA train streaks across the Wells street bridge as it's about to make its station stop at the Merchandise Mart.

A southbound Orange line train waits outside the station for traffic ahead to clear.

A CTA train crosses the Chicago river at Wells St. in Chicago's downtown.

A southbound Brown line train winds through the two reverse curves just north of the newly remodeled Chicago and Franklin station.

A southbound Brown line train comes off the Clark Tower interlocking and heads for Belmont station.

Speeding southbound on the Brown Line entering the Loop trackage, a CTA train slams across the diamonds at Tower 18, in the northwest corner of Chicago's Loop. This is one of the busiest junctions... (more)

Since the 1960s the CTA has used fiberglass end caps but today all end caps are unpainted for standardization. This northbound Orange line train standing at Roosevelt RD illustrates the typical e... (more)

Thisis the view from the atrium of the new Howard Street terminal. The Red, Purple and Yellow lines terminate here. Purple line trains operate through to the downtown on weekday rush periods. Th... (more)

Clark Tower is the second busiest junction on the system. Our outbound Brown line train meets an inbound Brown line train as we head to the eventual terminal at Kimball AV. THis branch was known... (more)

Two CTA "L" trains pass each other on the new sweeping high speed realignment just south of the Loop "L" that replaced two back to back 10 MPH Harrison Street reverse curves. If there is no train... (more)

A Brown Line train creeps through one of the busiest junctions on the CTA system: the Belmont interlocking. At the far end of the plant, we see a Red Line train waiting for the near train to clear... (more)

A Skokie Swift train prepares to depart. Note the disable electrical equipment on the top of the car, and artifact from when the Swift still ran on overhead power.

A CTA Orange Line train from Midway departs Roosevelt Street station for the Chicago Loop, through a canyon of buildings.

A green line train (I know because I actually hopped on it) heads south into the Adams & Wabash station. Next it will leave the Loop and head to the south side. The Donald's (Trump's) big tower ... (more)

Due to Construction on the Wabash and Lake sides of the Loop all Orange Line trains become Brown Line trains to Belmont.