In January 2003, the prototype ULTra ("Urban Light Transport") system in Cardiff, Wales, was certified to carry passengers by the UK Railway Inspectorate on a test track. ULTra was selected in October 2005 by BAA plc for London's Heathrow Airport. Since May 2011 a three-station system has been open to the public, transporting passengers from a remote parking lot to terminal 5. In May 2013 Heathrow Airport Limited included in its draft five-year (2014–2019) master plan a scheme to use the PRT system to connect terminal 2 and terminal 3 to their respective business car parks. The proposal was not included in the final plan due to spending priority given to other capital projects and has been deferred.