This topic is crossing regional lines (Mid-South, etc.) so it has been moved to General Highway Talk (https://www.aaroads.com/forum/index.php?board=12.0). Maybe that will open it up to ROW markers in other regions as well!
https://www.aaroads.com/forum/index.php?topic=8201.0 (https://www.aaroads.com/forum/index.php?topic=8201.0)