For most Americans, the car is still the dominant mode of transportation, which poses many problems for the aging population, who will have to give up their keys as their responses slow and eyesight gets worse.
For most aging Americans, cities are the best way to go with bus lines, handicap taxis, and subways, and now the advent of para-transit - which Aarian Marshall points out is more personalized than mass trasnsit but more cumbersome and expensive. New York University's Rudin Center for Transportation put out a new report that details better transit options for millions of aging Americans, and most of those solutions already exist.
Ride-sharing services, like Uber and Lyft, but for the handicaped, are the first option, with this solution saving an estimated $1.1 to $2.2 billion annually from para-transit costs. Big city data initiatives that share more info on power outages, bus schedules, and service interruptions could also save the elderly millions of dollars and lot of time.