I'm not good at finding things and I didn't find any posts on signaling an outdoor layout on this forum. That, of course, does not mean they are not there.
With my locomotives battery powered spot detection seems much preferable to powering my rails just for current flow detection.
In terms of signaling, I'm thinking of using APB, RFID and JMRI.
One of my modeling goals is to avoid unnecessary originality so my hope is someone here has already blazed a path.
I would very much appreciate any leads, suggestions, cautions, warnings, or advice.
Pacific NW USA