The indicators were constructed through the application of the Delphi technique, which integrates various systematic processes based on interaction of a group of experts. It is used for the collection and co-creation of information and metrics to be adopted. This methodology involved the search for a consensus of a group of experts through different stages.
The participants belong to four groups that contributed complementary views on the system: a) government representatives, b) responsible for transport operators, c) academic persons and research profiles, d) people from civil society organizations.
The work stages involved four phases: 1-initial survey to determine the relevant dimensions according to the perception of the experts, 2-in-depth interviews based on the dimensions identified, 3-co-creation workshops with stakeholders and, 4-a validation workshop where the final KPIs for each dimension were presented, to check the consensus in the application of the indicators from a telematic and anonymized vote.