As sustainable development is about simultaneous pursuit of economic competitiveness, social cohesion and environmental sustainability, it can only be achieved through an integrated approach to policy development in a way that different policy sectors are harmonised and follow a common goal.
A typical problem caused by the lack of collaboration between cities concerns land use, mobility and air quality planning. In order to reach significant improvements in terms of spatial quality, freedom to move and air quality, deep-seated co-operation among the departments/persons in charge of the different sectors is required.
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