hi, thanks for your edits! At the moment, these signals don't render on OpenRailwayMap because they are missing descriptive tags. 

here's a local example of how it should be rendered: https://openrailwaymap.app/#view=15.69/-36.848366/174.778436&style=signals

If you know what these signals look like, you can find the corresponing tags on this page: https://osm.wiki/New_Zealand/Railways