As early as 1906, there was a proposal for an additional station on the Rems Railway in Cannstatt in the vicinity of the regional hospital.

As the track in this area has a slope of 1.4 percent, it was not possible to provide a station for arriving and departing passengers served by the steam locomotives of the time.

Tram line 1 had been extended to Fellbach in 1929, connecting its residents to Stuttgart's public transport system.

An S-Bahn station should be built in the future at Kienbach junction, where a connecting track to the Untertürkheim freight yard branched off the Rems Railway.

The double-track section between Bad Cannstatt and Waiblingen received an additional pair of tracks.