Sitting at the back inside one of Essen's dual mode duobuses on route 145 on a mixed mode journey involving both diesel and electric traction. Note how although when in electric trolleybus mode it is far from silent the motor and transmission noises are considerably more agreeable than the deafening roar of the diesel engine. Also note how when not moving in electric mode there is virtually no noise – unlike when stationary in diesel mode when it is still consuming fuel and polluting both …
Duration : 0:5:50