This one is near 20th Street, it's a fixed position distant signal that controls the approach to the old KC main which was CTC, but is now part of the dark branch. Information supplied by James E. Gilley
The line crosess the U.P. at Yutan, so the fixed position distant signal (near a siding called ELK on the BN's Sioux CIty Line) appears to protect the crossing against northbounds (Westbounds according to BNSF even though they travel NE.),there is also a single (S.P. style) signal protecting it from southbounds. Information thanks to Brian Lynch.
A fixed position distant semaphore signal protects the BNSF crossing with the UP. It's located south of Platte Ave and Hills Farm Road. Information thanks to Cody Erben and Gary Smith