2007:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi1209.photobucket.com%2Falbums%2Fcc395%2FBrian5561%2FMarietta%2520Ok_zpssrxffxyl.jpg&hash=83b183c5582d484d874320f5d70684f17f454922) (http://s1209.photobucket.com/user/Brian5561/media/Marietta%20Ok_zpssrxffxyl.jpg.html)
2014 GSV:
https://www.google.com/maps/@33.9371889,-97.117529,3a,18.9y,277.69h,88.95t/data=!3m6!1e1!3m4!1svNYiS9JaCys2Qa6MO0N34g!2e0!7i13312!8i6656 (https://www.google.com/maps/@33.9371889,-97.117529,3a,18.9y,277.69h,88.95t/data=!3m6!1e1!3m4!1svNYiS9JaCys2Qa6MO0N34g!2e0!7i13312!8i6656)
In the 2007 pic, you can see that the older 4-way units are out of service. I'm thinking they solved the problem by robbing a signal from the other intersection to replace the two older four way units