Revenue from a dedicated transport tax (versement transport) levied on employers and based on payrolls has enabled the STIF to extend and maintain the public transport network and non-motorised transport facilities. The city’s success results from close co-operation between its Urban Transport Planning Authority (URBS), responsible for transport, and the urban development authority' (IPUCC), which is in charge of land-use planning. From its start in 1974, the Curitiba BRT was notable for its careful alignment with the 1965 Curitiba Master Plan, which focused the city’s growth along major corridors, through land-use and zoning regulations.