The Shared-Use Mobility Center is a public-interest organization dedicated to achieving universal, affordable, and sustainable mobility in urban and metropolitan regions of the US through the efficient sharing of transportation assets. Through piloting programs, conducting new research, and providing policy and technical expertise to cities and regions, SUMC seeks to extend the benefits of shared mobility for all.

Transportation has become the number one source of carbon pollution in the United States. It is the second largest expense for most families after housing, and lack of reliable access to a car, bus, or train is one of the biggest barriers to employment for Americans today.

New forms of shared mobility – such as bikesharing, carsharing, and ridehailing – offer new opportunities to address some of the most critical issues facing society. In combination with public transit, shared mobility is a powerful tool that cities can use to help reduce transportation costs; lessen air pollution; and expand access to jobs, opportunity, and a better quality of life. But to fully realize these benefits – and truly address poverty, climate change and racial inequalities – these new modes must work for everyone.

That’s why the Shared-Use Mobility Center’s mission is focused on bringing together the public, private industry, and local communities to forge partnerships, develop resources, and advance new solutions in order to reduce reliance on private automobiles and increase access to environmentally sound, cost-effective transportation options for all.

SUMC is uniquely suited to foster the advancement of the industry by keeping the focus on innovation. SUMC captures trends in new modes, supports research, shapes policy, transfers knowledge and educates academics, policymakers and other stakeholders.

SUMC’s primary roles in this quickly evolving sector include:

  • Knowledge creation,
  • Practical knowledge deployment,
  • Convening and connecting,
  • Demonstrating the potential of innovative technologies. 

The Shared-Use Mobility Center is a public-interest nonprofit dedicated to creating a multimodal transportation system that works for all. 


SUMC’s theory of change starts with our vision of the future: an environment where it’s possible to access a variety of transportation choices regardless of geographic location, income level, or individual needs.

We can realize this future by aligning goals and metrics to measure progress, creating a culture that encourages healthy and environmentally sound behavior, identifying policy changes that encourage transportation that is cost-effective and efficient, and developing communities to support change and accountability.

We believe that public transit is the backbone of an efficient, equitable transportation system. Together, transit and other shared modes can create a robust ecosystem of options that both support car-free and car-lite living and promote walking, biking, and other forms of active transportation.

Our Key Principles

  • Value and improve existing mobility assets that breakdown existing silos between modes, sectors, and providers and reduce barriers between services to create a universal mobility system across the United States.
  • Advance policies and implementation models that support more sustainable use of resources while preserving transportation choice, increasing access, and maintaining affordable options especially for low-income and traditionally under-served populations.
  • Foster equitable transportation choices that reduce single-occupant vehicle use and combat climate change. Promote a rapid but responsible transition to a new mobility era with improved services that allow people to move more efficiently.

The Shared-Use Mobility Center also supports and reinforces the “Shared Mobility Principles for Livable Cities,” with an emphasis on the public interest.

Shared Mobility Principles for Livable Cities

The Shared-Use Mobility Center is a signatory of the internationally recognized Shared Mobility Principles developed by Robin Chase. Our mission and vision are closely aligned to the principles outlined below:

  1. We plan our cities and their mobility together.The way our cities are built determines mobility needs and how they can be met. Development, urban design and public spaces, building and zoning regulations, parking requirements, and other land use policies shall incentivize compact, accessible, livable, and sustainable cities.
  2. We prioritize people over vehicles. The mobility of people and not vehicles shall be in the center of transportation planning and decision-making. Cities shall prioritize walking, cycling, public transport and other efficient shared mobility, as well as their interconnectivity. Cities shall discourage the use of cars, single-passenger taxis, and other oversized vehicles transporting one person.
  3. We support the shared and efficient use of vehicles, lanes, curbs, and land. Transportation and land use planning and policies should minimize the street and parking space used per person and maximize the use of each vehicle. We discourage overbuilding and oversized vehicles and infrastructure, as well as the oversupply of parking.
  4. We engage with stakeholders. Residents, workers, businesses, and other stakeholders may feel direct impacts on their lives, their investments and their economic livelihoods by the unfolding transition to shared, zero-emission, and ultimately autonomous vehicles. We commit to actively engage these groups in the decision-making process and support them as we move through this transition.
  5. We promote equity. Physical, digital, and financial access to shared transport services are valuable public goods and need thoughtful design to ensure use is possible and affordable by all ages, genders, incomes, and abilities.
  6. We lead the transition towards a zero-emission future and renewable energy. Public transportation and shared-use fleets will accelerate the transition to zero-emission vehicles. Electric vehicles shall ultimately be powered by renewable energy to maximize climate and air quality benefits.
  7. We support fair user fees across all modes.  Every vehicle and mode should pay their fair share for road use, congestion, pollution, and use of curb space. The fair share shall take the operating, maintenance and social costs into account.
  8. We aim for public benefits via open data. The data infrastructure underpinning shared transport services must enable interoperability, competition and innovation, while ensuring privacy, security, and accountability.
  9. We work towards integration and seamless connectivity. All transportation services should be integrated and thoughtfully planned across operators, geographies, and complementary modes. Seamless trips should be facilitated via physical connections, interoperable payments, and combined information. Every opportunity should be taken to enhance connectivity of people and vehicles to wireless networks.
  10. We support that autonomous vehicles (AVs) in dense urban areas should be operated only in shared fleets.  Due to the transformational potential of autonomous vehicle technology, it is critical that all AVs are part of shared fleets, well-regulated, and zero emission. Shared fleets can provide more affordable access to all, maximize public safety and emissions benefits, ensure that maintenance and software upgrades are managed by professionals, and actualize the promise of reductions in vehicles, parking, and congestion, in line with broader policy trends to reduce the use of personal cars in dense urban areas.

To learn more about the Shared Mobility Principles for Livable Cities, visit: https://www.sharedmobilityprinciples.org/

Our Goal: Take 1 million cars off the road over the next 5 years in 25 metropolitan regions