STS it says. which is quite clear. After driving by this multiple times on the highway. But upon close observations i noticed that it is actually over other tag and graffiti. which is hardly noticable in the picture also, and there are some concrete block in front of it with more tag.
The first picture says GA behind a 7eleven which i couldnt access. The rest of the pictures are from an abandonded building that was fenced in but covered in graffiti. GA's name appears again here too.