  The ever-increasing adoption of shared transportation modalities across the
United States has the potential to fundamentally change the preferences and
usage of different mobilities. It also raises several challenges with respect
to the design and development of automated mobilities that can enable a large
population to take advantage of this emergent technology. One such challenge is
the lack of understanding of how trust in one automated mobility may impact
trust in another. Without this understanding, it is difficult for researchers
to determine whether future mobility solutions will have acceptance within
different population groups. This study focuses on identifying the differences
in trust across different mobility and how trust evolves across their use for
participants who preferred an aggressive driving style. A dual mobility
simulator study was designed in which 48 participants experienced two different
automated mobilities (car and sidewalk). The results found that participants
showed increasing levels of trust when they transitioned from the car to the
sidewalk mobility. In comparison, participants showed decreasing levels of
trust when they transitioned from the sidewalk to the car mobility. The
findings from the study help inform and identify how people can develop trust
in future mobility platforms and could inform the design of interventions that
may help improve the trust and acceptance of future mobility.
