I am trying to retrieve Tram 11 route and they have got only 18 stops from Frankfurt (Main) Zuckschwerdtstraße to Hauptbahnhof. Is that true?
No, in total it got 40 stops - though currently there are some construction works going on at the far east end of the line so some stations are served by buses instead of the tram. Doesn't affect you getting around in the city centre. A shorter line 11 is serving only 18 stops between Höchst and Hauptbahnhof.
thanks for the reply