Here is a quick share of a study report on equity in public transportation from the Mineta Transport Institute:
Defining and Equity in Public Transportation, https://transweb.sjsu.edu/research/2100-Public-Transit-Equity-Metrics-Measurement
Perhaps income, physical ability/disability, age and gender are the more applicable aspects of equity in our case. However, the concepts and methodology in the report may still be applicable and can be customized or contextualized for the Philippine setting.
–