TSRC

Compliance, Congestion, and Social Equity: Tackling Critical Evacuation Challenges through the Sharing Economy, Joint Choice Modeling, and Regret Minimization

Wong, Stephen D.
2020

Evacuations are a primary transportation strategy to protect populations from natural and humanmade disasters. Recent evacuations, particularly from hurricanes and wildfires, have exposed three critical evacuation challenges: 1) persistent evacuation non-compliance to mandatory evacuation orders; 2) poor transportation response, leading to heavy congestion, slow evacuation clearance times, and high evacuee risk; and 3) minimal attention in ensuring all populations, especially those most vulnerable, have transportation and shelter. With ongoing climate change and increasing land development...

Biofuel Boundaries: Estimating the Medium-Term Supply Potential of Domestic Biofuels

Jones, Andrew
O'Hare, Michael
Farrell, Alexander
2007

We estimate the physical supply potential of biofuels from domestic municipal solid waste, forestry residues, crops residues and energy crops grown on existing cropland using optimistic assumptions about near-term conversion technologies. It is technically feasible to produce a significant amount of liquid biofuel (equivalent to 30-100% of 2003 gasoline demand) without reducing domestically produced food and fiber crops or reducing the total calories available as domestic animal feed. Most of this supply can be attributed to the potential of energy crops, with the combination of municipal...

Future of Aviation: Advancing Aerial Mobility through Technology, Sustainability, and On-Demand Flight

Cohen, Adam
Shaheen, Susan, PhD
2023

Advanced air mobility (AAM) is a broad concept enabling consumers access to air mobility, cargo and package delivery, healthcare applications, and emergency services through an integrated and connected multimodal transportation network. AAM includes local use cases of about a 50-mile radius in rural or urban areas and intraregional use cases of up to approximately 500 miles that occur within or between urban and rural areas. The Future of Aviation Conference: Advancing Aerial Mobility through Technology, Sustainability, and On-Demand Flight was held in person at the San Francisco...

Impacts of Transportation Network Companies on Vehicle Miles Traveled, Greenhouse Gas Emissions, and Travel Behavior Analysis from the Washington D.C., Los Angeles, and San Francisco Markets

Martin, Elliot, PhD
Shaheen, Susan, PhD
Stocker, Adam
2021

Transportation Network Companies (TNCs) like Lyft, Uber, and their global counterparts have expanded around the world over the past decade and have changed the way that people travel around cities and regions. The individual mobility benefits provided by TNCs have been clear. Passengers can summon a vehicle quickly via smartphone from almost anywhere to take them almost anywhere, with advance communication on estimated wait time, travel time, and cost. TNCs may also provide users with added mobility benefits, especially for those living in areas where public transit service is infrequent...

A Low-Carbon Fuel Standard for California Part 1: Technical Analysis

Farrell, Alexander E.
Sperling, Daniel
Arons, S.M.
Brandt, A.R.
Delucchi, M.A.
Eggert, A.
Farrell, A.E.
Haya, B.K.
Hughes, J.
Jenkins, B.M.
Jones, A.D.
Kammen, D.M.
Kaffka, S.R.
Knittel, C.R.
Lemoine, D.M.
Martin, E.W.
Melaina, M.W.
Ogden, J.M.
Plevin, R.J.
Sperling, D.
Turner, B.T.
Williams, R.B.
Yang, C.
2007

Executive Order S-1-07, the Low Carbon Fuel Standard (LCFS) (January 18, 2007), calls for a reduction of at least 10 percent in the carbon intensity of California’s transportation fuels by 2020. It instructed the Secretary of the California Environmental Protection Agency to coordinate activities between the University of California, the California Energy Commission (CEC) and other state agencies to develop and propose a draft compliance schedule to meet the 2020 Target. This report is the first of two by the University of California in response. This first study assesses the low-carbon...

Exploring the Future of Integrated Transportation Systems in the United States from 2030 to 2050: Application of a Scenario Planning Tool

Shaheen, Susan, PhD
Camel, Madonna
Lee, Kunik
2013

Intelligent transportation systems (ITS) have primarily focused on systems management. To further improve connectivity and safety in the future, ITS might embrace a more holistic planning approach. While the future of ITS remains an open question, its evolution is closely linked to how the world evolves on many dimensions, social, political, economic, legal, and environmental. In this paper, the authors present results from four expert workshops. These consisted of an initial steering committee workshop (February 2011), two expert scenario-planning workshops (June 2011), and a final...

Shared-Use Vehicle Systems

Shaheen, Susan
2002

In recent years, shared-use vehicle systems have garnered a great deal of interest and activity internationally as an innovative mobility solution. In general, shared-use vehicle systems consist of a fleet of vehicles that are used by several different individuals throughout the day. Shared-use vehicles off the convenience of the private automobile and more flexibility than public transportation alone. These systems are attractive since they offer the potential to lower a user’s transportation costs; reduce the need for parking spaces in a community; improve overall air quality; and...

Shared Mobility in Low- and High-Income Regions

2022

Although shared and informal transport are not new concepts in low- and middle- income countries (LMICs), a variety of economic, environmental, and social forces are contributing to the growth of shared mobility in LMICs around the world. Shared mobility—the shared use of a vehicle, motorcycle, autorickshaw, minibus, scooter, bicycle, or other travel mode—is an innovative transportation strategy that enables users to have short-term access to a transportation mode. This paper documents key shared mobility and informal transport concepts, terms, and definitions around the world. The paper...

California Transportation Plan 2050: Northern and Southern California Visioning Sessions Findings

Shaheen, Susan, PhD
Totte, Hannah
Cohen, Adam
2018

Improving California’s transportation system requires cross-sector collaboration, particularly as technologies, policies, and regulations develop simultaneously. The California Transportation Plan (CTP) 2050 aims to integrate perspectives from a diverse array of stakeholder that may not typically participate in the statewide planning process. The Visioning Sessions were conducted in two day-long visioning workshops in October 2018 in Southern and Northern California. Overall, these visioning sessions initiated a much-needed dialogue among experts and practitioners from diverse backgrounds...

Smartphone Applications to Influence Travel Choices: Practices and Policies

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

This primer provides an overview of current practices in this emerging field and looks toward the future in the evolution and development of smartphone applications for the transportation sector. The primer provides an introduction and overview smartphone applications (known as “apps”); discusses the background, evolution, and development of smartphone apps; reviews the types of smartphone applications promoting transportation efficiency and congestion reduction; discusses transportation apps and their impacts on traveler behavior; examines current challenges; and concludes with guiding...