In North Lake Tahoe there is a Bus service called [TART]http://www.laketahoetransit.com/home Tahoe area rapid transit; it does not have the most robust schedule and as cabs can be scarce, so a rental car is a necessity.
Stateline casino resorts in South Lake Tahoe have free shuttle buses to most of the ski resorts. Most of the shuttle buses do not check if you are staying at the resort.
Hitchhiking is also common in the north shore, although usually for shorter regional distances. The majority of rides are given by local residents.
