Following the reactivation of the regional rail services in 1996, the Seehäsle services were operated by Mittelthurgaubahn using three prototypes of class GTW 2/6 diesel multiple units of Swiss manufacturer Stadler Rail (Bm 596 671–673).
From 2005, two additional converted control cars were used because of the large demand for school transport.

After the liquidation of Mittelthurgaubahn in 2003, the operation was taken over by EuroTHURBO, which in turn was incorporated as part of the German SBB subsidiary SBB GmbH in 2005.

Due to frequent breakdowns of the GTW sets, a variety of replacement vehicles were used from 2001: these included a MAN railbus set (class VT 98 + VS 98) of the Hochwald Railway, a RegioSprinter of the Rurtalbahn GmbH and Regio-Shuttles of the Hohenzollerische Landesbahn (HzL).
From October 2005 all three of the GTW sets were out of operations; they were replaced by a MAN railbus set and three NE 81 sets (built by DUEWAG and Waggon Union) owned by Bodensee-Oberschwaben-Bahn.
It was only from 28 August 2006 that the two refurbished GTW were used again.

Since the GTW prototypes could not be made permanently operational and SBB GmbH demanded funding for replacement vehicles, the agreement between the district of Constance and SBB GmbH was terminated at the end of 2006.
The GTW prototypes were sold through an intermediary to the Italian company Ferrovie del Sud Est.
Following the reactivation of the regional rail services in 1996, the Seehäsle services were operated by Mittelthurgaubahn using three prototypes of class GTW 2/6 diesel multiple units of Swiss manufacturer Stadler Rail (Bm 596 671–673). From 2005, two additional converted control cars were used because of the large demand for school transport.
After the liquidation of Mittelthurgaubahn in 2003, the operation was taken over by EuroTHURBO, which in turn was incorporated as part of the German SBB subsidiary SBB GmbH in 2005.
Due to frequent breakdowns of the GTW sets, a variety of replacement vehicles were used from 2001: these included a MAN railbus set (class VT 98 + VS 98) of the Hochwald Railway, a RegioSprinter of the Rurtalbahn GmbH and Regio-Shuttles of the Hohenzollerische Landesbahn (HzL). From October 2005 all three of the GTW sets were out of operations; they were replaced by a MAN railbus set and three NE 81 sets (built by DUEWAG and Waggon Union) owned by Bodensee-Oberschwaben-Bahn. It was only from 28 August 2006 that the two refurbished GTW were used again.
Since the GTW prototypes could not be made permanently operational and SBB GmbH demanded funding for replacement vehicles, the agreement between the district of Constance and SBB GmbH was terminated at the end of 2006. The GTW prototypes were sold through an intermediary to the Italian company Ferrovie del Sud Est.
Radolfzell–Mengen railway