I’ve finally installed all the signals on my layout – 26 dwarf signals, 16 tall 2 aspect signals and 2 signal bridges that have 4 of 3 aspect heads. The signals operate according to switch positions and photo or occupancy sensors and connected to 6 of my custom designed signaling boards. Photo and occupancy sensors are set to 25-30 seconds delay and yellow is set to 8-10 seconds delay before green.