| Abstract: |
The assessment of policies for sustainable urban mobility features two basic
characteristics: incommensurability and strong uncertainty. This is why
multiple dimensions of evaluation and a structured room for collective
deliberation and learning should be considered. A participative procedure is
used to select a core set of performance indicators of policies for
sustainable urban mobility. Citizen participation and stakeholder involvement
are obtained through a national sample survey and a deliberative
multi-criteria analysis, respectively. This procedure is applied to the
Italian case. Citizens are more oriented towards reducing private transport
costs, air pollution and traffic accidents; stakeholders are more in favour of
improving car-free accessibility and reducing the consumption of land and
public space generated by urban mobility. The resulting core sets of
indicators are highly sensitive to the threshold chosen for the selection.
Using a lower cut-off threshold, four performance indicators are shared
between the two sets: ‘CO2 from transport’, ‘Quantity and quality of public
transport’, ‘PMx, COVNM, NOx, CO from transport’, ‘Death and injuries from
traffic accident’; using a higher cut-off threshold the two sets feature no
intersection. Further testing at a local scale is needed in order to
explicitly consider context-specific objectives, indicators and data; stronger
interactions among experts, citizens and stakeholders are needed in order to
avoid the generation of equivocal results. |