Federal Signal SD-10 along Route 46 in Parsippany, New Jersey
https://drive.google.com/file/d/1y-QHZP ... sp=sharing
There is one, it's somewhere in California, near San Francisco I believe. I couldn't find it though on the map, but I do remember seeing it a few months ago on there.but today there’s no known signal / siren combos hanging, let alone still functional.