 Before Kolumbus was created, there was several smaller companies who was responsible for the transport in the different parts of Rogaland.However, because of complications with bus lines not overlapping with each other, the bus companies finally decided to unite and become Kolumbus, or Rogaland Kollektivtrafikk (Rogaland Public Transports) as it is also known as.The companies that have contracts with Kolumbus are Tide Buss, Nettbuss, Norgesbuss and Boreal Norge (buses) and Stavangerske, Torghatten Trafikkselskap, L. Rødne og Sønner and John Arne Helgøy (ferries).