  In this paper, we introduce a metric to evaluate the equity in mobility and a
routing framework to enhance the metric within multi-modal intelligent
transportation systems. The mobility equity metric (MEM) simultaneously
accounts for service accessibility and transportation costs to quantify the
equity and fairness in a transportation network. Finally, we develop a system
planner integrated with MEM that aims to distribute travel demand for the
transportation network, resulting in a socially optimal mobility system. Our
framework results in a transportation network that is efficient in terms of
travel time, improves accessibility, and ensures equity in transportation.
