The Urban Development Concept consists of three main parts. Firstly, it summarises the results of comprehensive reviews and studies made in recent years and that are categorised according to particular fields, which provide the framework for the Concept. Secondly, it defines the general principles which must be enforced in all ensuing plans and decisions. The three principles of the approach are liveability, sustainability and equal opportunities. Thirdly, it outlines the main directions of the period until 2030 through 17 goals linked to particular fields, which include complex tasks and means affecting several areas. A sustainable city enables the rational use of available resources through a compact and mixed-use urban structure that gives priority to public transport, walking and cycling.