The transport publics de la region lausannoise (website in French) serves the Lausanne and its suburbs; it offers 2 metro lines, 8 regional lines, and 25 city bus lines. Considering that it has one of the densest networks of public transportation in Europe, they will pretty much get you anywhere you will want to visit during your stay. The Metro-Ouest line (M1) runs from the Flon to the University of Lausanne as well as Renens. The M2 metro line connects the Ouchy lakeside, the city centre and the northern outskirts of Epalinges. Many buses leave from Place St. Francois and Place de la Riponne to Ouchy as well as the surrounding suburbs.

Public transportation is efficient and reasonably priced. They use a trust system where you buy a ticket for a specific amount of time; conductors perform random checks to make sure that people buy their tickets. There is a hefty fine to be paid immediately in cash if you are caught without a ticket. A short journey ticket which you can use for up to three stops costs 1.90CHF, while unlimited travel across the downtown zone (zone 11) for an hour costs 2.60CHF. You can also pay 7.60CHF for a 24-hour pass within zone 11. Since some of the vending machines require exact change, it can be advisable to buy a pre-paid "Galaxy" card for 10CHF, 20CHF or 50CHF, accepted on every vending machine. These cards can be bought at tourism offices (one of which is located in the main railway station) or in selected "Naville" and "Relay" shops.