My brother noticed this pole that used to have a siren on it. Judging by Google maps it was removed between December 2011 and 2013. It was in Grapevine, Texas. They mostly have 2001s and a few Modulator 6024s. PS: Why is the control box yellow? https://www.google.com/maps/@32.92004,-97.1076166,3a,65...