Just a quick one, can you see a gatso camera lens in the box at the top (if it has one)? The pictures on google show quite clearly a round lens in the square box, however, most boxes I've seen dont actually have that, they just look blank.
Google Pics isn't live (and ) , and historically one in four Gatsos was live at any one time...
To answer the question - yes, the camera unit can be seen through the window if it is in situ (otherwise it's a plain bit of glass covering an opening) .