The Helsinki Metropolitan Area Council (Finnish: Pääkaupunkiseudun yhteistyövaltuuskunta, YTV, Swedish: Huvudstadsregionens samarbetsdelegation, SAD) was a co-operation agency operating in the Helsinki metropolitan area, now replaced by HSL and HSY. The organisation had a few responsibilities, most notably regional public transport and waste management. It was subordinated to the city councils of the four participating cities (Helsinki, Vantaa, Espoo and Kauniainen). Furthermore, transport cooperation also included neighboring municipalities of Kerava and Kirkkonummi.