  The increased use of personal vehicles presents environmental challenges,
prompting the exploration of public transportation as an affordable,
eco-friendly alternative. However, obstacles like fixed schedules, limited
routes, and extended travel times impede widespread adoption. This study
investigates the temporal evolution of spatial inequality in the travel time
gap between public transportation and personal vehicles, reflecting disparities
across states and time periods. Analyzing Census Transportation Planning
Program data for six northeastern states in 2010 and 2016 reveals no
significant increase in the travel time gap, but notable growth in inequality
in a few urban and disadvantaged communities. Comprehending these trends is
vital for fostering equitable advancements in transportation infrastructure and
enhancing public transportation competitiveness.
