Tramway and bus, Trondheim
Lavprisekspressen (lit. "Low price express") offers 2 depratures a day between Oslo and Trondheim. One at daytime and one at night. If you order in advance you can tickets from 49 NOK!! Lavprisekspressen also offers busses between Oslo and Bergen, Oslo and Kristiansand S, Oslo and Copenhagen (Denmark).
At this point the webpage is only available in Norwegian, but it is possible to navigate around the page is you use your intuition :)
Trondheim and Oslo are the last two cities in Norway where you can still find a tramway.
There's one last tramway left in Trondheim, which reopened in 1990, after lots of debate pro and against.
The slope of the Gråkall-banen is 8,8 km long.
Trondheim's got a good bus service with a good coverage of the city. The buscompany has a good website where you can browse for routes and "next bus from" search engine. Very helpful if your'e staying in Trondheim for some time :)
PST! When bying tickets the bus company offers family tickets and 24h valid tickets. Regular tickets are valid for transfer for aprox. 40 minutes after you by them. Single tickets costs 22 for adults and 11 for children and seniors.
For more info: http://www.team-trafikk.no/
also available in English
The public transportation network in Trondheim is quite good. It covers most of the city and the surrounding area. Busses go regularly to and from the city centre from 6 AM until about midnight on weekdays and until 3.40 AM in weekends. It costs NOK 20.
All bus routes have stops in Munkegata and Dronningens gate in the centre of the city.
Or you can take the tram for a great view over the city from Lian.