AllTransit (2022). AllTransit Performance Score on Transit. Composite score of transit connectivity, access to jobs, and frequency of service for over 70 cities in the U.S.

American Council for an Energy-Efficient Economy (2022). The City Clean Energy Scorecard for 2021. Policy on energy efficiency in five categories including transportation for 100 major U.S. cities.

Carbon Disclosure Project (2022). Cities A List 2022. Top tier performance for a composite of GHG inventory transparency and rigor, alignment with science-based climate targets, publication of climate risk and vulnerability assessment and climate adaptation plan, featuring 122 cities globally.

Corporate Knights (2022). Sustainable Cities Index.

People for Bikes (2022). Best Places to Bike for 2022. Ranking of US cities for bicycling with a focus on safe speeds, protected bike lanes, road diets, intersection treatments, network connections, and trusted data.

People, Health and Place unit at Washington University in St. Louis (2022). Global Observatory of Healthy and Sustainable Cities. Indicators on urban design, transportation and health for 25 cities globally.

Walk Score (2022). 2021 City & Neighborhood Walk Score. Ranking of walkability for more than 2,800 cities and 10,000 neighborhoods in the U.S. and Canada. Includes also standalone rankings for transit and bicycling.


The League of American Bicyclists (2022). Bicycling and Walking in the Unites States: Benchmarking Progress. Data and policy facts on bicycling and walking.

Center for Neighborhood Technology (2022). H+T Affordability Index. Combined transportation and housing affordability by city.

Updated February 7, 2023

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