Complex sentence: SEPTA ordered Neoplan AN460s from 1998-2000 to replace their aging articulated buses and AN440s 155 AN460 high floor buses are in service at the moment.
Split into simpler sentences: SEPTA ordered Neoplan AN460s from 1998-2000 to replace their aging articulated buses and AN440s as well. SEPTA has 155 AN460 high floor buses in service at the moment.