 The new plan was to extend the route beyond the Tierpark extension to the Oberschöneweide, very near to Treptow.In the 1980s, a new plan was developed to run along the VnK Railway to Kaulsdorf, and to create a new stretch as far as Hönow, removing the need to go to Oberschöneweide and Marzahn.Design of the route took place in 1983/84.