ARDOT has been upgrading their end of ramp signs. The STOP and YIELD signs are larger and the DO NOT ENTER signs (also larger) are posted lower to the ground, plus the addition of red reflective tape on the sign posts.
Old set-up:
https://goo.gl/maps/Z8YrLrHpmNk
https://goo.gl/maps/jVmymHdLXF92
I have no photos of the new set-up yet, but the new signs are large enough for two sign posts. I'll try to get some photos in the next few days