A participative procedure to select indicators of policies for sustainable urban mobility. Outcomes of a national test

Background. 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.
Methods. 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.
Results. 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.
Concluding remarks. 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.