Data

Carbon Dioxide Emissions from Urban Road Transport in Latin America: CO2 Reduction as a Co-Benefit of Transport Strategies

Lee Schipper
Elizabeth Deakin
Carolyn McAndrews
Werner Rothengatter
Yoshitsugu Hayashi
Wolfgang Schade
2011

We review aggregate trends in CO2 emissions from road transport in Latin America. Comparison with other regions, as well as with automobile ownership and use suggests that road transport the emissions in this region are closely connected to high automobile ownership and use. Examination of detailed estimates of vehicle stocks, use and fuel intensity as well as data from four large metropolises in the region confirms this suggestion. The same data show that it is cars that are the main reason for congestion, high levels of air pollution, and other transport related externalities in urban...

The Impact of the Sharing Economy on Latent Individual Modal Preference

Maitagorri Helene Schade
Elizabeth Deakin
Robert Cervero
Joan Walker
2017

Mobility patterns in our cities are changing with the onset of shared mobility services. However, publicly available information on the use of shared mobility services is lagging behind. This study set out to fill this data gap by gathering web-based travel diary survey from carsharing and Transportation Network Company (TNC) users in the San Francisco Bay Area. Respondents were screened to be regular users of shared mobility services. The shared use reported in our sample was primarily car sharing and TNC, with bike sharing not being reported enough to be studied here. Our analysis drew...

The Cost versus Price for Parking Spaces at Major Employment Centers: Findings from UC Berkeley

Aldo Tudela Rivadeneyra
Manish Shirgaokar
Elizabeth Deakin
William Riggs
2015

In dense urban areas, surface parking often poses an opportunity cost, and reuse of the land for urban development with parking relocated to a multistory structure may be an attractive option. This paper analyzes the cost of replacing surface parking with a parking structure and finds that it may be equally cost effective to pursue travel demand management strategies. The paper analyzes what it costs to build a parking space in a multi-story structure (garage) using US average data as well as data from a substantially higher-cost case, the University of California, Berkeley. The...

An integrated assessment of factors affecting modal choice: towards a better understanding of the causal effects of built environment

Samira Ramezani
Barbara Pizzo
Elizabeth Deakin
2018

This paper discusses the methodological challenges in understanding causal relationships between urban form and travel behavior and uses a holistic quasi-experimental approach to investigate the separable marginal influence of each of several urban form factors on mode choice as well as the complex relationships between those factors and a wide range of personal traits. Data analysis and models are used to reveal the effect of such interactions on mode choice for both work and non-work trips in Rome, Italy. It is found that population density does not have a significant marginal positive...

Low-Income Suburban Residents in the San Francisco Bay Area Face Significant Housing and Transportation Issues

Alexandra Pan
Elizabeth Deakin
Susan Shaheen
2025

Growing poverty in America’s suburbs challenges their image as single-family residential communities for middle class, predominantly white families. Research shows that suburban areas now have the largest share of households under the poverty line. Since these areas have lower density development and lower levels of public transit service compared to urban areas, living in the suburbs may pose accessibility challenges for low-income households, particularly those without a personal vehicle. To explore housing and transportation issues associated with the suburbanization of poverty, we...

Conducting Transportation Survey Research in China: International Research Team Experiences and Best Practices

Meng-Cheng Ni
Christopher Cherry
Elizabeth Deakin
2012

Rapid changes in transportation choices and travel patterns accompanying China's economic development have led many international agencies and nongovernmental organizations to get involved in transportation planning and analysis in Chinese cities. Some of their work is project oriented, in partnership with the national government or city governments, and some is research conducted in cooperation with local universities, research groups, and government agencies. Both kinds of work need high-quality data, but because growth and change are so rapid, official data sources may be outdated or...

Strategies for Improving Pedestrian Safety: Cases from Jalisco and Michoacán, Mexico

Carolyn McAndrews
Elizabeth Deakin
Alfredo Celis De la Rosa
2008

In developing countries, the growing use of autos is creating a clash with pedestrians. Pedestrian-vehicle collisions clearly have immediate negative consequences on public health. In the longer run, if walking is not safe, comfortable, and convenient, it is likely to decline as a mode of travel in countries where households and individuals increasingly have the means to choose alternatives. Even so, most people will continue to walk for many trips, and with increasing motorization will be at risk of harm unless the safety and comfort of the walking environment is improved. We use data...

Impact of the COVID-19 Pandemic and Generational Heterogeneity on Ecommerce Shopping Styles – A case study of Sacramento, California

Qianhua Luo
Teddy Forscher
Susan Shaheen
Elizabeth Deakin
Joan Walker
2023

The COVID pandemic has accelerated the growth of ecommerce and reshaped shopping patterns, which in turn impacts trip-making and vehicle miles traveled. The objectives of this study are to define shopping styles and quantify their prevalence in the population, investigate the impact of the pandemic on shopping style transition, understand the generational heterogeneity and other factors that influence shopping styles, and comment on the potential impact of the pandemic on long-term shopping behavior. Two months after the initial shutdown (May/June 2021), we collected ecommerce behavioral...

The effects of driving restrictions on travel behavior evidence from Beijing

Yizhen Gu
Elizabeth Deakin
Ying Long
2017

We examine the effects of Beijing’s driving restrictions on individual travel behavior. The restrictions prohibit drivers from using their vehicles one weekday per week on the basis of the license plate number. Using the 2010 Beijing Household Travel Survey data, we find that driving restrictions have significant effects on auto trip frequency and thus vehicle miles traveled, suggesting substitution toward other modes. We also find evidence of the differential effects across subgroups of drivers. This suggests a variation in willingness to pay for auto use, which is not addressed by the...

Analyzing Equity Impacts of Transit Fare Changes: Case Study of Alameda-Contra Costa Transit, California

Aaron Golub
Elizabeth Deakin
Cornelius Kofi Nuworsoo
2006

Many transit agencies, faced with budget shortfalls, must consider increasing fares. This paper analyzes the case of the Alameda-Contra Costa Transit District (AC Transit). In March 2005, AC Transit put forth five alternative fare proposals for public discussion. The proposed fare structures included combinations of fare hikes, base fare reductions, eliminations of free transfers, and discontinuation of periodic passes. Using data from the agency’s 2002 on-board survey, the paper assessed the impacts of the various fare proposals on different subsets of riders and evaluated the equity of...