Vestviken Kollektivtrafikk (VKT) (lit. Vestviken Public Transport) is the public transport

Public transport

Public transport is a shared passenger transportation service which is available for use by the general public, as distinct from modes such as taxicab, car pooling or hired buses which are not shared by strangers without private arrangement.Public transport modes include buses, trolleybuses, trams...

 administration for the counties

Counties of Norway

Norway is divided into 19 administrative regions, called counties . The counties form the primary first-level subdivisions of Norway and are further divided into 430 municipalities...

 of Buskerud

Buskerud

is a county in Norway, bordering Akershus, Oslo, Oppland, Sogn og Fjordane, Hordaland, Telemark, and Vestfold. The county administration is located in Drammen.-Geography:...

, Telemark

Telemark

is a county in Norway, bordering Vestfold, Buskerud, Hordaland, Rogaland and Aust-Agder. The county administration is in Skien. Until 1919 the county was known as Bratsberg amt.-Location:...

 and Vestfold

Vestfold

is a county in Norway, bordering Buskerud and Telemark. The county administration is in Tønsberg.Vestfold is located west of the Oslofjord, as the name indicates. It includes many smaller, but well-known towns in Norway, such as Larvik, Sandefjord, Tønsberg and Horten. The river Numedalslågen runs...

 in Norway

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

. VTK is responsible for planning, organising and marketing bus

Bus

A bus is a road vehicle designed to carry passengers. Buses can have a capacity as high as 300 passengers. The most common type of bus is the single-decker bus, with larger loads carried by double-decker buses and articulated buses, and smaller loads carried by midibuses and minibuses; coaches are...

 transport in the three counties, but does not operate any buses. Instead the operation is done by private companies based on public service obligation

Public Service Obligation

In transport, public service obligation or PSO is an arrangement in which a governing body or other authority offers an auction for subsidies, permit the winning company a monopoly to operate a specified service of public transport for a specified period of time for the given subsidy...

 contracts or negotiations. VTK is organised as a limited company

Aksjeselskap

Aksjeselskap is the Norwegian term for a stock-based company. It is usually abbreviated AS or A/S, especially when used in company names. An AS is always a limited company, i.e. the owners cannot be held liable for any debt beyond the stock capital...

 owned by the three county administrations. The administration is located in Tønsberg

Tønsberg

is a city and municipality in Vestfold county, southern Norway, located around north-east of Sandefjord. The administrative centre of the municipality is the city of Tønsberg....

.

VKT organises bus routes managed by 650 buses driving 26 million km per year. The operators are (as of 2007) Drangedal Bilruter, Fjord1 Hallingdal Billag, Nettbuss

Nettbuss

Nettbuss AS is the largest bus company in Norway owned by the Norwegian State Railways . It was until 2000 known as NSB Biltrafikk. The company has 14 operating subsidiaries throughout Norway and in Denmark and Sweden....

, Schøyens Bilcentraler

Schøyens Bilcentraler

Nobina Norge is a Norwegian bus company, owned by Nobina, that operates in the counties of Akershus, Hedmark, Hordaland, Oppland, Østfold and Vestfold.-History:...

, Telemark Bilruter

Telemark Bilruter

Telemark Bilruter is a Norwegian bus company based in Telemark with headquarters in Seljord. The company operates regional and express buses in addition to trucks. The company has monopoly in most of Telemark, but not the highly populated Grenland area...

, Telemark Kollektivtrafikk

Telemark Kollektivtrafikk

Telemark Kollektivtrafikk is a Norwegian bus company that operates the city buses in Grenland, Telemark. The company holds a public service obligation contract with the County of Telemark for city buses in Porsgrunn and Skien....

 and Tinn Billag

Tinn Billag

Tinn Billag AS is a buss company that operates local services in Tinn, Norway, as well as coach services from Tinn to Oslo and Grenland. Operations are on contract with Vestviken Kollektivtrafikk....

.