Data

An Assessment of the Viva CalleSJ Event in San Jose [Research Brief]

Kos, Richard M.
Adam Cohen
2024

The assessment of Viva CalleSJ 2024 employed a mixed-method approach, collecting data through surveys of participants, interviews with businesses, and observational analysis during the event. An intercept survey was distributed along the six-mile route to capture participants’ demographics, reasons for attending, travel modes, physical activity, spending patterns, and perceptions of the event. The survey, available in English, Spanish, and Vietnamese, yielded insights into participant demographics and engagement. Semi-structured interviews with business owners and city officials explored...

Activity-Based Human Mobility Patterns Inferred from Mobile Phone Data: A Case Study of Singapore

Jiang, Shan
Ferreira, Joseph
Marta Gonzalez
2017

In this study, with Singapore as an example, we demonstrate how we can use mobile phone call detail record (CDR) data, which contains millions of anonymous users, to extract individual mobility networks comparable to the activity-based approach. Such an approach is widely used in the transportation planning practice to develop urban micro simulations of individual daily activities and travel; yet it depends highly on detailed travel survey data to capture individual activity-based behavior. We provide an innovative data mining framework that synthesizes the state-of-the-art techniques in...

Urban Magnetism Through the Lens of Geo-tagged Photography

Paldino, Silvia
Bojic, Iva
Sobolevsky, Stanislav
Ratti, Carlo
Marta Gonzalez
2015

There is an increasing trend of people leaving digital traces through social media. This reality opens new horizons for urban studies. With this kind of data, researchers and urban planners can detect many aspects of how people live in cities and can also suggest how to transform cities into more efficient and smarter places to live in. In particular, their digital trails can be used to investigate tastes of individuals, and what attracts them to live in a particular city or to spend their vacation there. In this paper we propose an unconventional way to study how people experience the...

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...