1900 efforts were made to concessions for the upgraded lines Perbaoengan-Bamban (after 1904 extended until Tebingtinggi ) Timbang Langkat- Tandjoeng, Poera-Pangkalan Brandan.
1900 bemühte man sich um Konzessionen für die Ausbaustrecken Perbaoengan-Bamban (nach 1904 verlängert bis Tebingtinggi), Timbang Langkat-Tandjoeng, Poera-Pangkalan Brandan.