SUMC works to research and analyze the growth of shared mobility across the US and world, contributing to the broader understanding of this rapidly evolving landscape and drawing out operational lessons and best practices from the many mobility innovations that are currently finding their way into the marketplace. SUMC has produced original research for the Federal Transit and Federal Highway Administrations, the Transportation Research Board, and a number of public, private, and nonprofit clients.

If you are interested in learning more about our research program, and are interested in getting involved as a partner or client in future research projects, please email our Director of Research and Consulting, Colin Murphy, at

Past and current SUMC research projects include:

Global Benchmarking Study on European Shared Mobility Services 

SUMC worked with the Federal Highway Administration to study and report how European cities and agencies have planned, implemented and supported shared mobility services to create multimodal mobility options in sustainable communities. The report features principal findings in key areas, case studies, and recommendations for how the US can adapt these practices to advance the benefits of shared mobility at home.

TCRP Report 196: A New SUMC Study Exploring the Impacts of Shared TNCs, Microtransit, Tech Shuttles & Other Forms of Private Transportation

Private transit services—including airport shuttles, shared taxis, private commuter buses, dollar vans, and jitneys—have operated for decades in many American cities. Recently, business innovations and technological advances that allow real-time ride-hailing, routing, tracking, and payment have ushered in a new generation of private transit options. These include ride-splitting products like UberPool and Lyft Line, “microtransit” services, and new types of public-private partnership that are helping to bridge first-/last-mile gaps in suburban areas. But while they often fill a need, there are often perceived or real concerns over the safety, equity and other impacts of private transit providers.

A new SUMC-authored report published by the Transportation Research Board’s Transit Cooperative Research Program, Private Transit: Existing Services and Emerging Directions, explores the effects of private transportation services in the US, and proposes to transit agencies and jurisdictions a way forward to account for, regulate, and incorporate private transit into their planning.

TCRP Report 195: TNCs and Public Transit 

This study by SUMC for the Transit Cooperative Research Program finds that peak use of transportation network companies (TNCs) like Uber and Lyft comes on weekends and evenings, not during rush hours when public-transit use is highest. SUMC’s findings were based on one of the first uses of origin-destination trip data provided by a major TNC. This finding was presented in TCRP Report 195Broadening Understanding of the Interplay between Public Transit, Shared Mobility, and Personal Automobiles. Read more about the study here.

TCRP Report 188: Shared Mobility and the Transformation of Public Transit 

SUMC completed a study for the Transportation Research Board’s (TRB) Transit Cooperative Research Program (TCRP) to examine the evolving relationship between public transportation — including paratransit and demand-responsive services — and new, tech-enabled forms of shared mobility such as ridesourcing.  The report covers opportunities and challenges for public transportation as they relate to new mobility services and potential actions that public agencies may take to promote cooperation between public and private mobility providers. Access the study here.

Shared Mobility Toolkit Report

To complement its Shared Mobility Toolkit, SUMC developed a companion report that provides an overview of each tool along with policy recommendations, trends by city size and type, and shared mobility growth scenarios for the project’s 27 participating cities. Access the report here.

Research Analysis: Impact of On-Demand Mobility Services on Public Transit

SUMC completed a research analysis for the American Public Transportation Association (APTA) based on information generated as part of Transit Cooperative Research Program (TCRP) Report 188 on the Impact of On-Demand Mobility Services on Public Transit. The analysis draws from a wide variety of sources, including interviews with public officials, a survey of shared mobility users and an analysis of Uber and transit demand in seven cities.

Shared-Use Mobility Reference Guide

SUMC has developed a Shared-Use Mobility Reference guide to help prepare government, business, and community leaders to address the rapid changes currently taking place in cities across the nation. The guide includes recommended definitions for new shared modes of transportation, updates on the latest industry trends, evaluation of changing local government roles and policy choices and more. Access the guide here.

For more information on SUMC’s research work, please contact us.