The first electromobil used articulated bus in regular service of ASEAG as bus line 73 (University Hospital – Aachen-Rothe Erde station) at the bus stop H.4 University Hospital Aachen. The Mercedes-Benz Citaro articulated bus was rebuilt as part of the EU project Civitas (Cleaner and better transport in cities) by ASEAG and their partners from a hybrid electric bus to a battery electric bus.