Trondheim of the city and its suburbs. In addition, the Nattbuss (Night Bus) service ensures cheap and effective transport for those enjoying nightlife in the city centre during the weekends. The Nattbus has other prices than ordinary buses. The European route E6 highway passes through the city centre of Trondheim in addition to a motorway bypass along the eastern rim of the city. Trondheim is twinned with: Trondheim Trondheim (; historically Kaupangen, Nidaros and Trondhjem) is a city and municipality in Trøndelag county, Norway. It has a population of 193,501 (4th quarter 2017), and is the third-most populous municipality in Norway,
Third-country economic relationships with the European Union is considered part of the EU single market. Iceland has also signed the Schengen treaty. On 16 July 2009, Iceland applied to join the European Union. Liechtenstein joined the EEA in 1995 and participates in the EU single market. Switzerland referendum to join the EEA in 1992 failed, so Swiss products do not participate in the European single market. However the country recently negotiated two series of bilateral agreements with the Union. The first series, Bilateral Agreements I, consists of seven bilateral agreements and was signed in 1999 (entry into force in 2001), the main part being Free Movement of