When you leave the train (departing from Lausanne), take the road alongside the railway tracks in the direction from which the train came. At the crossroads, continue straight ahead on the Route de la Trossière, which also goes past the tracks. After a few minutes, turn left to cross the tracks over the bridge. Just after the latter, go right on the Pont de Moudon path alongside the tracks. After approximately one hundred paces, level with an explanatory sign, look down at the vines just below.
Remember that the Lavaux vineyard is a protected and fragile site, here are some recommendations to preserve it