 These were Norges Statsbaner, Ofotbanen, Arriva, Veolia, Danske Statsbaner (DSB) and Keolis.The companies were required to document their competency to be qualified for security and operation permits from the Norwegian Railway Inspectorate; and were not allowed to subsidize the operations from activities that were not subject to competition.To participate in the bid, NSB established the subsidiary NSB Anbud AS in 2004.