This is a 0 hour block which will expire after being read.

Please follow the guideline found on the OSM wiki - basically user can map what is visible, with the only exception of personal information.

You can work with who ever maintains the property to remove the trails and post signs if they do not exist. But if they are there they can be mapped.

If you would like more information I suggest you ask on our community forum at c.osm.org. You can also join the OSM US Slack at slack.openstreetmap.us.

Best,
Clifford Snow
OpenStreetMap Foundation
Data Working Group