People tend to flock in droves where numerous economic opportunities exist; as a result, overpopulation becomes a major issue.
Traffic congestions are an indication of a few things, one of them being the attestation of bustling economic activities in any given region.
Numbeo, a Serbian crowd-sourced global database, dubbed this effect the Inefficiency Index. According to Numbeo, the Inefficiency Index is an estimation of inefficiencies in traffic. High inefficiencies are usually caused by people driving a car instead of using public transport or long commute times. It can be used as a traffic component measurement in economies of scale.
