StreetLight Data, which specializes in mobility analytics, developed the index due to the transportation sector’s contribution to the growing issue of climate change, according to Vice President of Marketing Martin Morzynski. As cities look to reduce greenhouse gas (GHG) emissions from the transportation sector, StreetLight believes data-driven metrics are most impactful in understanding where to place investments.

The list may come as a shock to some, as New York and San Francisco — which are notorious for congestion — lead the ranking. However, Martin emphasized that the index looked outside those city limits at entire metro regions because of the impact commuters have on GHG emissions.
More>>