Shared Mobility

Mobility and Energy Impacts of Shared Automated Vehicles: A Review of Recent Literature

Shaheen, Susan
Bouzaghrane, Mahamed Amine
2019

The purpose of this review is to present findings from recent research on Shared automated vehicles (SAV) impacts on mobility and energy. While the literature on potential SAV impacts on travel behavior and the environment is still developing, researchers have suggested that SAVs could reduce transportation costs and incur minimal increases in total trip time due to efficient routing to support pooling. Researchers also speculate that SAVs would result in a 55% reduction in energy use and ~ 90% reduction in greenhouse gas (GHG) emissions.SAV impacts on mobility and energy are uncertain....

Shared Automated Mobility: Early Exploration and Potential Impacts

Stocker, Adam
Shaheen, Susan
2017

Automated vehicles, if shared, have the potential to blur the lines between public and private transportation services. This chapter reviews possible future shared automated vehicle (SAV) business models and their potential impacts on travel behavior. By examining the impacts of non-automated shared mobility services like carsharing and ridesourcing, we foster a better understanding of how current shared mobility services affect user behavior. This serves as a starting point to explore the potential impact of SAV services. Several key studies covering the topic are discussed. Although the...

Good Practices for Advancing Urban Mobility Innovation: A Case Study of One-Way Carsharing

Terrien, Clara
Maniak, Remi
Chen, Bo
Shaheen, Susan
2016

Transforming urban mobility requires integrating public with private services into a single transportation system. Local governments and private companies face the challenge of how to coordinate themselves. An emblematic example is one-way carsharing (shared use of a fleet of vehicles that are typically free-floating throughout an urban area). Surprisingly, good practices for public and private players driving this change remain relatively undocumented. This paper proposes a systematic and balanced public-private approach to foster transportation innovation management. We review both...

Chapter 3 - Mobility on Demand (MOD) and Mobility as a Service (MaaS): Early Understanding of Shared Mobility Impacts and Public Transit Partnerships

Shaheen, Susan
Cohen, Adam
2019

Technology is changing the way we move and reshaping cities and society. Shared and on-demand mobility represent notable transportation shifts in the 21st century. In recent years, mobility on demand (MOD)—where consumers access mobility, goods, and services on-demand by dispatching shared modes, courier services, public transport, and other innovative strategies—has grown rapidly due to technological advancements; changing consumer preferences; and a range of economic, environmental, and social factors. New attitudes toward sharing, MOD, and mobility as a service (MaaS) are changing...

U.S. Shared-use Vehicle Survey Findings: Opportunities and Obstacles for Carsharing and Station Car Growth

Shaheen, Susan A.
Meyn, Mollyanne
Wipyewski, Kamill
2003

Shared-use vehicle services provide members access to a vehicle fleet for use on an as needed basis, without the hassles and costs of individual auto ownership. From June 2001 to July 2002, the authors surveyed 18 U.S. shared-use vehicle organizations on a range of topics, including organizational size, partnerships, pricing, costs, and technology. While survey findings demonstrate a decline in the number of organizational starts in the last year, operational launches into new cities, membership, and fleet size continue to increase. Several growth-oriented organizations are responsible for...

Carsharing Parking Policy: Review of North American Practices and San Francisco, California, Bay Area Case Study

Shaheen, Susan A.
Cohen, Adam
Martin, Elliot
2010

Carsharing provides users access to a shared vehicle fleet for short-term use throughout the day, reducing the need for private vehicles. The provision of on-street and public off-street parking dedicated to carsharing is an important policy area confronting public agencies. As of July 2009, approximately 377,600 individuals were carsharing members in North America in about 57 metropolitan areas. A total of 17 jurisdictions, one state (California), and eight public transit operators in North America have formal and informal carsharing parking policies, pilot projects, and proposed...

Carsharing in North America: Market Growth, Current Developments, and Future Potential

Shaheen, Susan A.
Cohen, Adam P.
Roberts, J. Darius
2006

Carsharing provides members access to a fleet of autos for short-term use throughout the day, reducing the need for one or more personal vehicles. Over ten years ago, carsharing operators began to appear in North America. Since 1994, a total of 40 programs have been deployed—28 are operating in 36 urban areas and 12 are now defunct. Another four are planned to launch in the next year. This paper examines carsharing growth potential in North America, based on a survey of 26 existing organizations conducted from April to July 2005. Since the mid-1990s, the number of members and vehicles...

Carsharing in Shanghai, China: Analysis of Behavioural Response to Local Survey and Potential Competition

Wang, Mingquan
Martin, Elliot
Shaheen, Susan A.
2012

The rapid motorization of China raises questions about the potential of alternative mobility solutions, such as carsharing (short-term auto use), in developing mega cities like Shanghai. While motor vehicle demand is increasing rapidly, there are many aspects of urban transportation in Shanghai (and China more broadly) that separate it from the urban environments in which carsharing has traditionally thrived. For example, the taxi plays a much more prominent role in the transportation systems of Shanghai and Beijing than it does in most North American and European cities. Carsharing has...

Shared-Use Vehicle Services for Sustainable Transportation: Carsharing, Bikesharing, and Personal Vehicle Sharing across the Globe

Shaheen, Susan A.
2012

This special issue of the International Journal of Sustainable Transportation highlights developments in shared-use vehicle research, in particular carsharing, public bikesharing, and personal vehicle sharing. Since the mid-1980s, shared-use vehicle services have gained momentum across the world. Developments include a range of operational models—private, non-profit, and governmental ventures; advanced technology; worldwide entry and growth; collaboration and competition; and increased activity by auto rental companies and automakers.

Impacts of Car2go on Vehicle Ownership, Modal Shift, Vehicle Miles Traveled, and Greenhouse Gas Emissions: An Analysis of Five North American Cities

Martin, Elliot
Shaheen, Susan
2016

Car2go is currently the largest carsharing operator in the world, with a presence in nine countries and nearly 30 cities. It operates as a one-way instant access carsharing system within a pre-defined urban zone. Members can find an unoccupied parked vehicle, access it immediately, and use it to meet their local travel needs. As long as the vehicle is parked within the operating zone, users...