Buildings Indicators for Sustainable Mobility: the District of Naples
Mobility is a major component in ensuring freedom of movement and good quality of life. It is strictly associated to the concept of sustainability, considering that more than 70% of European citizens live in urban areas.
Traffic volumes and congestion, air quality, noise pollution, consumption of non renewable resources, greenhouse gas emissions, social exclusion and urban sprawl are significant challenges to achieve sustainable urban mobility. This is one of the most important goals of the Coordination Plan of the District of Naples (PTCP). In this paper, we show the process of research, selection, valuation, weighting and synthesis of a set of indicators to monitor sustainable mobility during the realization process of the PTCP.
Two urban areas lacking infrastructure connections are considered: North Naples and Giuglianese. According to the Planning Code, the GIS Office and the Planning Office are responsible for choosing the set of indicators and its application, and for evaluating if the goals of the PTCP are achievable and if corrective actions should be undertaken as well.
The Environmental Report attached to the Plan sets down to link each topic of the plan to a unique index resulting from a set of specific indicators. One of the results of this study was the selection of 22 indicators for sustainable mobility.
They were the outcome of the intersection between the lists available in scientific literature and the databases available for the District of Naples. As set down by the PTCP Planning Code, a top down approach was adopted Therefore indicators were selected by technicians. However, a bottom up approach, i.e. citizenship and stakeholders select indicators, would have resulted in a more transparent process. This study applied a rating method named allocation of budget to weight indicators. Weights determined the importance of each indicator compared to the others.
After the weighting procedure, the aggregation of indicators into a single complex index could take place. The main result of this research was the design and implementation of a database via a GIS. Not only could this GIS be updated, but it could also convert information within each indicator into a single complex index. It could immediately give the trend towards sustainable mobility.
The database was useful to compare either a zone of the district in different times or different areas of the district at the same time. In addition, the process of building indices could help transparency in planning procedures and social learning through the appraisal process, if citizenship and stakeholders had been involved. The combined use of participatory techniques and multiple criteria analysis takes conflicting interest into account and is the only way to solve them in a common vision.
The method implemented in this research should be applied to planning process as well and should involve most of the society.
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