Changes

Options follow in loose order of usefulness. Another option is to catch a lift to the service station Grauholz on the north side of the city (or check option 3 above on how to get their by public transport), change sides (there is a bridge) and ask at the gas station for rides south as it can be hard to find a ride going as far as the next service station to the south from any of the on-ramps below. If you're going to anywhere before Lausanne, be aware that there are two different highways between Bern and Lausanne and make sure that your on-ramp serves the one you want.

'''Option 1: Wankdorfplatz'''

From the train station, take bus #20 to the station Wyler (buy a ticket 'zone 1-2' for 4 CHF, or don't). Walk 200m on the right side of the street (on your right you see a huge stadium, then cross the big crossroads. There's a perfect bus stop. Better use a sign.

'''Option 2: Murtenstrasse'''

See Option 2 above. Doable spot for hitchhiking towards Lausanne, too. Either stand before the Güterbahnhof bus stop with a sign or walk up the on-ramp where northbound and southbound traffic split and hitch right there. Technically illegal, but odds are small that you will wait long enough to run into any trouble.

'''Option 3: Weissensteinstrasse'''

Take tram 7 or 8 to Schlossmatte, for example from Hirschengraben near the train station. Backtrack a bit and turn right down Huberstrasse, before you turn right again and follow Weissensteinstrasse until you see the motorway signs. This isn't a very good spot as several directions meet very close to the on-ramp, but by working with signs, you can still get a ride down towards Lausanne.