The South Ring is used by freight traffic as a direct connection between Laim and Munich East, bypassing the Hauptbahnhof.

Since the South Ring is not a separate line, the term is applied to several sections of track.

They have in common that they include a link with the freight yard of Munich South station.

The line runs as four tracks through a 330 m long tunnel between Radlkoferstraße and Ganghoferstraße, passing under the former exhibition grounds.

Freight travels on the South Ring usually via the tunnel from Laim marshalling yard to Heimeranplatz.

[5][6] However, citizens' groups and critics continue to call for an upgrading of the South Ring instead of a tunnel.