How Taxis Augment Public Transit
When comparing taxi trips from the morning and evening, King finds a geographical asymmetry indicating that commuters are using taxis for just one leg of their daily commute, and in this case it is usually the morning.
King has spent a lot of time advocating his synergistic theory and thinking about the subject. Alongside colleagues Matthew Daus and Jonathan Peters of CUNY, he presented a paper on the complimentary nature of cabs at a meeting of the Transportation Research Board. In it, they argue that "taxi service is a critical aspect of the transit system."