POV: You’re riding on a CTA Brown Line train and pass through Tower 18 Interlocking 🚈 Often referred to as “the busiest railroad junction in the world,” Tower 18 Interlocking is responsible for the safe passage of trains on the CTA’s Brown, Green, Orange, Pink and Purple Lines as they navigate the Loop. The tower structure seen in this video is the third version to exist here. The first was built in 1900 (as far as I can ascertain), the second in 1969, and this one in 2010. There’s an immense a

See Chicago from the perspective of a CTA Brown Line rail operator with our latest Ride the Rails video! http://youtube.com/@CTAConnections?utm_source=facebook&utm_medium=chicago transit authority | Chicago Transit Authority

CTA Brown Line trains are seen crossing the North Branch of the Chicago River between Rockwell and Francisco Stations on a sunny winter morning in Chicago, Illinois. The inbound and outbound CTA trains are traveling over the at-grade portion of the Brown Line that runs (from east to west) between Rockwell and the terminus of the Brown Line at Kimball. The trains consist of a mixture of 2600-series cars and 3200-series cars. | Trainiac Productions

A CTA Brown Line train arrives and departs at Paulina Station in Chicago’s Lakeview neighborhood on a cloudy autumn evening. The train is made up of a combination of 2600-series and 3200-series cars, the standard equipment mix for the Ravenswood. Listen for the iconic “doors closing” announcement before the train pulls away! | Trainiac Productions

A pair of CTA Brown Line trains meet at Armitage Station on the snowy morning of November 10, 2025. An inbound train is first, seen departing the station as it continues toward the Loop. Not long after, an outbound train enters the scene. That one is destined for Kimball at the end of the Brown Line. Both trains feature a mixture of 2600-series and 3200-series equipment. The portal to the State Street Subway can be seen in the middle splitting the inbound and outbound Brown Line tracks. | Traini

A Kimball-bound CTA Brown Line train descends down to grade level after departing Western Station on the sunny morning of November 2, 2025. Operating as an elevated route from the Loop to Western, the Brown Line lowers to ground level between Western and Rockwell Stations. It then remains at-grade through the Francisco and Kedzie stops and in to its terminus at Kimball. | Trainiac Productions