People organize daily travel efficiently: population-level study discovers small-scale details about individuals’ choices

Studies of human mobility usually focus on either the small scale -- determining the origins, destinations and travel modes of individuals' daily commutes -- or the very large scale, such as using air-travel patterns to track the spread of epidemics over time. The large-scale studies, most of which are made possible by the vast data generated and collected by new technologies like sensors and cellphones, are very good at describing the big picture, but don't provide much detail at the individual level. Smaller-scale studies have the opposite characteristic: Their findings generally can't be scaled up from the individual to be applied broadly to populations. But a new study bridges that gap.

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