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American Cities Climate Challenge

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The Bloomberg American Cities Climate Challenge is an initiative to reduce emissions in 25 of America’s largest cities.

Recognizing that cities account for more than 70% of global carbon emissions–and that mayors have significant authority over high-emitting sectors: transportation and buildings–the Climate Challenge provides support to cities working to realize their aggressive carbon reduction goals. In particular, with transportation as the largest single sector of carbon emissions in the U.S., implementing projects that reduce reliance on personal vehicles is critical to supporting cities in their fight against climate change.

NACTO’s Role

As a transportation lead, we’re working to at varying levels of engagement with all 25 Climate Challenge cities, providing technical expertise, leading design trainings, and creating open channels of communication between the participating cities and NACTO’s broader network of 81 cities and transit agencies across North America.

Transportation Accelerators Under the Climate Challenge

Building on the City Accelerator Program, we are also partnering with six cities–Atlanta, Boston, Denver, Minneapolis, Philadelphia, and San Antonio–to accelerate the implementation high-quality bike or transit corridors. This approach helps each city rapidly develop new transportation infrastructure and the internal procedures to continue building projects once the Climate Challenge ends.

Levels of Engagement

Work in one of the 25 Climate Challenge cities? Take our 5-7 minute survey.

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Climate Challenge Updates

Blog Articles

Climate Actions Keeps Rolling in San Antonio and Boston
Climate Action on the Streets of Denver, Atlanta, and Minneapolis

Webinars

They Didn’t Give Up at the Intersection
Limiting Opportunities for Speeding
Driving Decisions with Data
It’s Crunch Time: How to Get Hard Data
Making it Count: Using Data for Public Outreach
Swing for the Geofence

Digital Design Charrettes

Honolulu
San Diego

Design Trainings

Honolulu
St. Petersburg

Press Releases

Atlanta, Boston, Denver, Minneapolis, Philadelphia Press Release
San Antonio Press Release

Press

Atlanta, Boston, Denver, Minneapolis, and Philadelphia are about to jump-start their bike infrastructure (Fast Company)
NACTO partners with 5 cities on low-carbon transport projects (Smart Cities Dive)
Every bus in this country deserves its own lane (Curbed)
California Cities Rolling Toward a More Sustainable Future (NRDC)
City of San Antonio to redesign roads to make them safer, public transportation faster (KSAT)
Zarzamora Street to Become Testing Ground for Transit, Safety Projects (Rivard Report)
Atlanta Is Taking Action for Safer Streets (NRDC)

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NACTO's City Accelerator Program

The City Accelerator program helps cities rapidly implement high-quality transit or bike corridors, from design to build out. The program was started in 2014 as way to provide in-depth, on-the-ground support to member cities implementing new street design projects that may depart from existing practice.

Whether a red bus lane or protected bike lane, undertaking new projects requires changing business as usual. Under Accelerators, NACTO helps cities develop the new partnerships and pathways needed to implement these projects, bringing together the rich peer network to help cities move projects from idea to implementation through lasting programmatic change.

Transit Program Accelerators

Better Bikeways Accelerators

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Partners