Shared Mobility/Mobility on Demand

Uber and Lyft have made San Francisco’s traffic much worse, study says

May 8, 2019

picture of vehicles

Ride-hailing services like Uber and Lyft are so popular in San Francisco that they have become the single biggest factor behind the city’s increasingly snarled traffic, according to a new report.

Understanding Evacuee Behavior: A Case Study of Hurricane Irma

Stephen Wong; Susan Shaheen, PhD; Joan Walker, PhD

In September 2017, Hurricane Irma prompted one of the largest evacuations in U.S. history of over six million people. This mass movement of people, particularly in Florida, required considerable amounts of public resources and infrastructure to ensure the safety of all evacuees in both transportation and sheltering. Given the extent of the disaster and the evacuation, Hurricane Irma is an opportunity to add to the growing knowledge of evacuee behavior and the factors that influence a number of complex choices that individuals make before, during, and after a disaster.

Automated Vehicles, On-Demand Mobility and Environmental Impacts

Jeffery Greenblatt
Susan Shaheen, PhD

We review the history, current developments, projected future trends and environmental impacts of automated vehicles (AVs) and on-demand mobility, and explore potential synergies. Many automobile manufacturers and Google plan to release AVs between 2017 and 2020, with potential benefits including increased safety, more efficient road use, increased driver productivity and energy savings. Estimates of AV energy use and greenhouse gas (GHG) emissions range from an ~80 % or greater decrease to a threefold increase; however, we argue that net decreases are likely.

The Benefits of Carpooling

Susan Shaheen, PhD
Adam Cohen
Alexandre Bayen, PhD

Carpooling allows travelers to share a ride to a common destination and can include several forms of sharing a ride, such as casual carpooling and real-time carpooling. Because carpooling reduces the number of automobiles needed by travelers, it is often associated with numerous societal benefitsincluding: 1) reductions in energy consumption and emissions, 2) congestion mitigation, and 3) reduced parking infrastructure demand. In recent years, economic, environmental, and social forces coupled with technological innovations are encouraging shared and pooled services.

Scooters could improve mobility in low-income areas, but they have an image problem

December 5, 2018

Cities around the country are grappling with what transportation planners call "the last mile problem": how to get people who don’t drive from a transit stop to their final destination faster than walking. It’s an especially big issue in low-income neighborhoods where many people don’t own cars and transit service can be spotty.

The Future of Urban Mobility

November 2, 2018

Implications for Shared Urban Mobility for Latin American Countries

Uber and Lyft are driving toward IPOs

October 18, 2018

Uber and Lyft already compete in ride-hailing, ride-sharing, bike-sharing and e-scooters. Next year, they'll be competing for investors, too: Both companies are reportedly planning initial public offerings for early 2019.

An Interview with Susan Shaheen, the “Mother” of Shared Mobility

October 13, 2018

Lily Maxwell, smart cities content writer for, interviews Susan Shaheen Ph.D., a pioneer in future mobility strategies. She was among the first to observe, research, and write about changing dynamics in shared mobility and the likely scenarios through which automated vehicles will gain prominence. She is an internationally recognized expert in mobility and the sharing economy.

MOD Sandbox Demonstrations Independent Evaluation: VTrans Open Trip Planner Evaluation Plan

Gustave Cordahi
Susan Shaheen, PhD
Elliot Martin, PhD

The MOD Sandbox Demonstrations are sponsored by the Federal Transit Administration (FTA). The MOD Sandbox Demonstrations Independent Evaluation is sponsored by the United States Department of Transportation (USDOT), jointly by the Intelligent Transportation Systems - Joint Program Office (ITS JPO) and the FTA. All documents are USDOT publications. You may access the document at: