TSRC

Ridesharing (Carpooling and Vanpooling)

Shaheen, Susan, PhD
Cohen, Adam
Randolph, Michael
Farrar, Emily
Davis, Richard
Nichols, Aqshems
2019

Ridesharing allows travelers to share a ride to a common destination and can include several forms (Shaheen & Cohen, 2019; Chan & Shaheen, 2011; SAE International, 2018). Ridesharing differs from for-hire vehicle services (i.e., transportation network companies (TNCs), ridesourcing, and ridehailing) in its financial motivation. When a ridesharing payment is collected, it partially covers the driver’s cost and is not intended to result in financial gain. Additionally, the driver has a common origin and/or destination with the passengers. In this toolkit, readers will find a summary...

A Low-Carbon Fuel Standard for California Part 2: Policy Analysis

Farrell, Alexander E.
Sperling, Daniel
Brandt, A.R.
Eggert, A.
Farrell, A.E.
Haya, B.K.
Hughes, J
Jenkins, B.M.
Jones, A.D.
Kammen, D.M.
Knittel, C.R.
Melaina, M.W.
O'Hare, M.
Plevin, R.J.
Sperling, D.
2007

The Low Carbon Fuel Standard (LCFS) can play a major role in reducing greenhouse gas emissions and stimulating improvements in transportation fuel technologies so that California can meet its climate policy goals. In Part 1 of this study we evaluated the technical feasibility of achieving a 10 percent reduction in the carbon intensity (measured in gCO2e/MJ) of transportation fuels in California by 2020. We identified six scenarios based on a variety of different technologies that could meet or exceed this goal, and concluded that the goal was ambitious but attainable. In Part 2, we examine...

How Public Education on Ecodriving Can Reduce Both Fuel Use and Greenhouse Gas Emissions

Martin, Elliot W.
Chan, Nelson D.
Shaheen, Susan A.
2012

Ecodriving, the concept of changing driving behavior and vehicle maintenance to impact fuel consumption and greenhouse gas (GHG) emissions in existing vehicles, has gained recent prominence in North America. One ecodriving strategy involves public education through Internet-based information dissemination. This paper presents the results of a controlled stated-response study conducted from June to December 2010 with approximately 100 University of California, Berkeley faculty, staff, and students, assessing the effectiveness of static ecodriving web-based information. A comparison of the...

Shared Mobility Policy and Modeling Workshop

Shaheen, Susan, PhD
Cohen, Adam
Farrar, Emily
2019

The market for personal mobility is changing rapidly due to shifting social and cultural trends, as well as technological advances, such as smartphones, information processing, widespread data connectivity, sharing, and vehicle automation. Shared, on-demand mobility represents a sustainable vision for future mobility with a reliable network of multimodal options that are available to all travelers. On March 22, 2019, the Local Government Commission (LGC) and the Transportation Sustainability Research Center (TSRC) at the University of California, Berkeley hosted the Caltrans Shared...

Current State of the Sharing Economy and Evacuations: Lessons from California

Wong, Stephen
Shaheen, Susan, PhD
2019

In many evacuations including wildfire evacuations, public agencies often do not have enough resources to evacuate and shelter all citizens. Consequently, we propose that the sharing economy, through private companies and/or private citizens, could be leveraged in disasters for transportation and sheltering resources. To assess this feasibility, we distributed surveys to individuals impacted by three major wildfires in California: 1) the 2017 October Northern California Wildfires (n=79), 2) the 2017 December Southern California Wildfires (n=226), and 3) the 2018 Carr Wildfire (n=284)....

Future of Public Transit and Shared Mobility: Scenario Planning for COVID-19 Recovery

Shaheen, Susan, PhD
Wong, Stephen, PhD
2021

In 2020, the novel coronavirus (COVID-19) pandemic enveloped the world, leading to a public health crisis that profoundly changed all aspects of society, especially multiple sectors in transportation such as public transit and shared mobility. With so much uncertainty about the future of travel, the transportation sector needs to move rapidly to shape the nature of public transit and shared mobility services during the COVID-19 recovery period. Consequently, the University of California Institute of Transportation Studies (UC ITS) and the Transportation Research Board’s (TRB) Executive...

Advanced Air Mobility Community Integration Considerations Playbook

Cohen, Adam
Hasan, Shahab
Mendonca, Nancy L.
Wulff, Yolanka
2023

Aviation is undergoing rapid change due to advancements in technology, new business models, changing consumer preferences, and other trends. These trends are poised to change the way people travel by air. Advanced air mobility (AAM) is a broad concept focusing on leveraging these trends to include routine aviation mobility in urban, suburban, and rural communities. NASA envisions AAM as safe, sustainable, accessible, and affordable aviation for transformational local and intraregional missions. But it’s worth noting that this vision, AAM associated terms, and even the definition of AAM...

Creating Markets for Green Biofuels: Measuring and Improving Environmental Performance

Turner, Brian T.
Plevin, Richard J.
O'Hare, Michael
Farrell, Alexander E.
2007

This study describes how some biofuels are produced, emphasizing agricultural production systems, and considers what is needed in order to measure and communicate environmental performance, and gives examples of how this might be done. We describe a set of seven uses of a Green Biofuels Index, from a wholly market-driven implementation through a set of increasingly intrusive regulatory approaches. We then present several case studies of specific biofuel production pathways using a lifecycle analysis of the inputs to feedstock production and processing, but excluding market-mediated effects...

Shared Mobility: Current Practices and Guiding Principles Brief

Shaheen, Susan
Cohen, Adam
Zohdy, Ismail
Kock, Beaudry
2016

Shared mobility—the shared use of a vehicle, bicycle, or other mode—is an innovative transportation strategy that enables users to gain short-term access to transportation modes on an as-needed basis. The term shared mobility includes various forms of carsharing, bikesharing, ridesharing (carpooling and vanpooling), and on-demand ride services. It can also include alternative transit services, such as paratransit, shuttles, and private transit services (called microtransit), which can supplement fixed-route bus and rail services. With diverse options for mobility on the rise, smartphone...

Urban Air Mobility Market Study

Reiche, Colleen PhD
Goyal, Rohit
Cohen, Adam
Serrao, Jaqueline
Kimmel, Shawn, PhD
Fernando, Chris
Shaheen, Susan, PhD
2018

The Booz Allen Team explored market size and potential barriers to Urban Air Mobility (UAM) by focusing on three potential markets – Airport Shuttle, Air Taxi, and Air Ambulance. We found that the Airport Shuttle and Air Taxi markets are viable, with a significant total available market value in the U.S. of $500 billion, for a fully unconstrained scenario. In this unconstrained best-case scenario, passengers would have the ability to access and fly a UAM at any time, from any location to any destination, without being hindered by constraints such as weather, infrastructure, or traffic...