To get from Ulm to the Neu-Ulm bank and back, Ulm barges and the solar ferry run daily during the International Danube Festival.
The solar ferry only runs if the water levels of the Danube allow it.
Zillen and ferries timetable:
Zillen: Weekdays from 15.00 to 22.00 and weekends from 11.00 to 22.00
Danube ferry: always from 11.00 am to 10.00 pm
Fare €1 (Danube ferry) and on a donation basis (Zillentaxi)