The data is a live XML feed from Norfolk County Council's CDMF System (Common Data Management Facility) hosted by the ITS (Intelligent Transport Systems) team. The data is updated every 5 minutes, it is compiled by our CDMF system but sourced from various third party systems. Park and Ride data is provided by our own Norfolk County Council Park and Ride Sites. Private car park data from shopping centres and department stores is provided in good faith by car park operators. The feed gives a capacity and current occupancy of each car park, along with a status of OPEN or CLOSED if appropriate.