Yep: http://www.swisstrains.ch/ (Search eg. for "Zürich HB" for some traffic) But it's also just timetables drawn to a map :/

Oh, and then there's one for planes: http://radar.zhaw.ch/radar.html This actually uses real data (They have a transponderdata-receiver on the roof) and there's a Google Earth version: http://www.idp.zhaw.ch/de/engineering/idp/forschung/transpor...

There's also one for ships, using real GPS data from AIS - http://marinetraffic.com/ais/

and another one for planes http://www.flightradar24.com/