Essen dual-mode-bus eastbound.

A 'dual-mode-bus' (duobus) travels through part of the light rail underground / subway system. This video sequence is based on duobuses travelling eastbound, and is a mix of (hand held) views taken out of the front & side windows and of passing vehicles as seen from the footpath. Most of the video was taken in 1990 and the cutaway views include both winter and summer sequences, plus duobuses in different liveries. Once at the eastern extremity of the tunnel section (a bus / tram stop named Volkshochschule) there are also views showing how buses on route 145 use this location to switch between diesel and electric trolleybus modes (a fully automated process which takes barely a minute) whilst duobuses on route 147 remain as trolleybuses. More information on Essen's 'dual-mode-bus' demonstration project and the OBahn / kerb guided busway in general can be found here: http://citytransport.info/OBahn.htm