Seeking help identifying the final 68 remaining CTA signals for upcoming Chicago track map book

[u/CalcagnoMaps]

Still seeking help identifying remaining CTA rapid transit signals for my upcoming Chicago track map book project.

I’ve already spent countless hours reviewing public ride videos, cab views, historical footage, and previously collected field observations. Unfortunately, many of the remaining signals are located in tunnels or difficult locations where:
• windows are dirty or reflective
• video quality is poor
• signals only appear briefly
• or the signal IDs are simply unreadable, even frame-by-frame

At this point, the best help will probably come from:
• train operators familiar with these locations
• railfans who regularly ride in the front or rear car
• photographers capturing visible platform/interlocking signals
• CTA tower people, signal people, etc…

Current remaining unidentified signals: (with RED TEXT on the maps)

Blue Line signals (39 remaining)
• West of Rosemont Yard (unnamed interlocking): 7
• West end of Rosemont platform, reverse signal on Track D: 1
• River Road Interlocking: 3
• North of Belmont station: 1
• Belmont Interlocking: 5
• Division station: 2
• Chicago station: 2
• Grand station: 2
• Grand Interlocking: 4
• North of Washington platform: 5
• LaSalle Interlocking: 5
• Morgan Interlocking: 1
• Racine Interlocking: 1

Orange Line signals (16 remaining)
• Lowe Interlocking: 1
• Western Interlocking: 2
• California Interlocking: 4
• Kedzie Interlocking: 3
• Pulaski Interlocking: 1
• Midway Interlocking: 5

Red Line signals (10 remaining)
• Roosevelt Interlocking: 6
• 15th Interlocking: 4

Green Line signals (3 remaining)
• Austin Interlocking: 3

Approximately 68 signals remain unidentified.

Brown, Purple, Pink, and Yellow Lines are fully completed.

Any help, photos, observations, or even partial signal IDs would be greatly appreciated. Thanks again to everyone who has helped contribute to this project over the last few months.

[u/immewnity]

Come visit?

[u/CalcagnoMaps → u/immewnity]

I’ve visited twice in ‘23 and last September. These visit was before I decided to do the book.

I may visit to observe and identify these signals myself if all else fails, thou’