May 7, 2018 - 10:33 PM
Because Konstanz is on the Swiss border, the railway station is divided into German and Swiss sides. Before 2008 there was a fence dividing the 2 sections as well as a customs post. I think it would be possible to use your pass from Konstanz, but you would have to ask at the station. If it's not possible, buy a ticket to Kreuzlingen, which is a few hundred metres away on the swiss side and start using your pass from there. The trip takes about 7 minutes.