Addressing environmental issues and social issues will be a key challenge for the future of transportation. There are well-documented health advantages to engaging in safe active transportation. Active transportation is also a good option to reduce human-induced global heating and noise in urban environments. The relative comparison is the product of the average measure of the stratifier within a set divided by the average measure of the stratifier within another set. Complex measures represent a single value that expresses the magnitude of inequality between all groups (quintiles) in each population and at a given time. These measures may be helpful to generate hypothesis on social aspects that may be driving inequalities in transportation systems. In summary, inequalities linked to active transportation can be measured or addressed in several ways. Addressing environmental issues and social issues will be a key challenge for the future of transportation but also for the future of the planet.