sentences:  On 28 May 1972, a few months before the opening of the Summer Olympics in Munich, the Munich S-Bahn went into regular operation.This was accompanied in the Pasing station area with further modifications of the junctions of the four suburban lines as an important junction for the new S-Bahn network.The tracks running to Westkreuz (now lines S 6 and S 8) now ran under the lines towards Aubing (S 4) and Lochhausen (S 3).