Help Me Identify the Last 46 Unknown CTA Blue Line Signals (Maps/Screenshots Included)
CTA Blue Line signal ID progress update:
:I’m currently down to the remaining 46 unidentified or unverified signals on the entire Blue Line system for the upcoming Tracks of the Chicago ‘L’ book project.
I’ve attached screenshots showing the signal locations I’m still trying to identify or confirm. Some already have possible IDs, but the available video/photo quality was not good enough for a 100% verification.
Current remaining totals on other lines:
- Red Line: 17
- Orange Line: 16
- Pink Line: 10
- Green Line: 4 (all at Austin Interlocking)
Brown, Purple, and Yellow Lines are now fully accounted for.
If anyone recognizes any of these Blue Line signals or has clearer photos/videos of the locations, I’d greatly appreciate the help.
Thanks again to everyone who has contributed information so far. The knowledge in this group has been incredibly valuable for the project. (Let me know if you'd like your name added to the book's contributors page :-) )
The screenshots begin near O'Hare and end at Forest Park:
1 signal at Rosemont station and River Road Interlocking
Belmont Station and Belmont Interlocking
Armitage Interlocking (at Western station)
Chicago and Grand stations + Grand Interlocking
Dearborn St Subway in the Loop
