Sporveien Oslo AS shall procure a geo positioning system (Parking Geo Positioning System) for use in the organisation's Underground Railway Workshop at Ryen and supporting areas The system shall show where every train is parked in the area and in which direction. The requirement for the degree of accuracy, precision and accessibility is high. The system shall support the transport authority's steadily increasing requirement for digitising, service quality, efficiency and cost limit. The system will be a central component in the workshop and maintenance processes for trains and trams, and is anticipated to be a critical system in these processes.