I wonder if the old steam trams did actually do a loop in the old square. If you look at the 1890 Ordnance it shows that the steam trams probably went past the old square on Corporation Street and reversed into the square and then switching and coming out on the other side of the island to go back along Corporation Street. Maybe the track was changed later. I don't remember what the shape of the island was later but maybe the tram tracks defined the triangular shape originally. If this is true then the steam engine should be visible with the passenger car behind it, assuming that the engine and driver were always at the front.
https://www.british-history.ac.uk/m...d=10098&ox=1801&oy=735&zm=1&czm=1&x=395&y=331
https://www.british-history.ac.uk/m...d=10098&ox=1801&oy=735&zm=1&czm=1&x=395&y=331