Distinguishing voluntary versus compelled cross-deprivation travel

Determine whether cross-deprivation travel observed in mobile-phone-based origin–destination flows represents voluntary destination choice or is compelled by unmet local needs and structural constraints in residents’ home neighborhoods, so as to clarify the behavioral drivers underlying residual bubble breaking.

Background

The study introduces the concept of residual bubble breaking, showing that residents of more deprived neighborhoods in India and Mexico systematically travel to less deprived areas more than expected from gravity-model baselines based on population distribution and road travel times.

However, the observational, cross-sectional nature of the mobility data prevents inferring the motivation behind cross-deprivation travel. Specifically, the analysis cannot distinguish whether residents choose destinations in better-off areas voluntarily (e.g., for employment or social reasons) or whether such travel is compelled by deficits in local amenities and structural constraints within home neighborhoods. Clarifying this distinction is essential for interpreting mobility as opportunity-seeking versus necessity-driven behavior and for designing appropriate urban policy responses.