ITS Berkeley

Uri Avin and Daniel A. Rodriguez Discuss "The Role of Employment Subcenters in Residential Location Decisions"

Avin, U
Rodriguez, DA
2010

Uri Avin writes: The paper by Eun Joo Cho, Daniel A. Rodriguez, and Yan Song in the Fall 2008 issue of the Journal of Transport and Land Use (ąe role of employment subcenters in residential location decisions, JTLU vol. 1 no. 2) was of great interest to me both because of its intrinsic subject matter and because I spent four years working in Charlotte/Mecklenburg County on a variety of projects, starting with the 1998 integrated transit/land use plan that preceded the bond referendum. I was moved to respond to the paper from the perspective of someone familiar with the place and its...

Comparative Analysis of Pedestrian Injuries Using Police, Emergency Department, and Death Certificate Data Sources in North Carolina, US, 2007–2012

Sandt, LS
Proescholdbell, S
Evenson, K
Robinson, W
Rodriguez, D
Harmon, K
Marshall, S
2020
Pedestrian safety programs are needed to address the rising incidence of pedestrian fatalities. Unfortunately, most communities lack comprehensive information on the circumstances of pedestrian crashes and resulting injuries that could help guide decision-making for prevention program development and implementation. This study aimed to evaluate how three commonly available data sources (police-reported pedestrian crashes, emergency department [ED] visits, and death certificates) define and capture pedestrian injury data, and to compare the distribution of pedestrian injuries and fatalities...

Transportation Implications of Urban Containment Policies: Study of Largest 25 US Metropolitan Areas

Targa, F
Rodriguez, DA
Aytur, S
2006

Despite earlier attempts to evaluate the consequences of urban containment policy adoption, the transport implications of these policies have been overlooked. This paper examines the impact that containment policies have on population density and vehicle miles travelled per capita. An empirical analysis is conducted, relying on a fixed-effects model for panel data for the largest 25 metropolitan areas in the US during the 1982-94 time-period. Because the outcomes are endogenously related, instrumental variable regression is used to test hypotheses about the effect of the presence and...

Exploring Cohesion, Flexibility, Communication Overhead and Distribution for Web Services Interfaces in Computational Science

Sicilia, MA
Rodriguez, D
2008

Computational science studies often rely on the availability of large datasets through the Web. Web services (WS) provide a convenient way for making those datasets available, since they rely on a standard and widely available technology. However, there are many ways to devise a Web service interface for a given dataset, and the resulting interfaces vary in their properties related to cohesion, distribution, flexibility and communication overhead, among other parameters. This paper explores these attributes and provides some directions on how they can be measured. Concretely, a well-...

Factors Influencing Implementation of Local Policies to Promote Physical Activity: A Case Study of Montgomery County, Maryland

Salvesen, D
Evenson, KR
Rodriguez, DA
Brown, A
2008

Policy interventions such as zoning ordinances, school facility siting guidelines, capital improvement programs, and park master plans hold particular promise for promoting physical activity, especially at the local level. Despite increasing attention to the relationship between built environment characteristics and physical activity, there is a paucity of research on the extent to which local policies can promote or hinder physical activity. Furthermore, the impact of local policies on physical activity should depend on how effectively the policies are implemented. Based on the...

Exploring Walking Differences by Socioeconomic Status Using a Spatial Agent-Based Model

Yang, Y
Roux, AV Diez
Auchincloss, AH
Rodriguez, DA
Brown, DG
2012

We use an exploratory agent-based model of adults' walking behavior within a city to examine the possible impact of interventions on socioeconomic differences in walking. Simulated results show that for persons of low socioeconomic status, increases in walking resulting from increases in their positive attitude towards walking may diminish over time if other features of the environment are not conducive to walking. Similarly, improving the safety level for the lower SES neighborhoods may be effective in increasing walking, however, the magnitude of its effectiveness varies by levels...

Role of Built Environments in Physical Activity, Obesity, and Cardiovascular Disease

Sallis, JF
Floyd, MF
Rodriguez, DA
Saelens, BE
2012
In industrialized nations like the United States and Sweden, the vast majority of adults do not meet the physical activity guidelines of 150 minutes per week.1 Inactive lifestyles put most adults at risk of cardiovascular diseases (CVDs), diabetes mellitus, obesity, some cancers, osteoporosis, and psychological disorders.2 Physical activity can be...

New Data and Methods for Estimating Regional Truck Movements

Dion, Francois, PhD
Yang, Mingyuan
Patire, Anthony, PhD
2023

This report describes how current methods of estimating truck traffic volumes from existing fixed roadway sensors could be improved by using tracking data collected from commercial truck fleets and other connected technology sources (e.g., onboard GPS-enabled navigation systems and smartphones supplied by third-party vendors). Using Caltrans District 1 in Northern California as an example, the study first reviews existing fixed-location data collection capabilities and highlights gaps in the ability to monitor truck movements. It then reviews emerging data sources and analyzes the...

Pedestrians' Perceptions of Walkability and Safety in Relation to the Built Environment in Cali, Colombia, 2009–10

Villaveces, A
Nieto, LA
Ortega, D
Ríos, JF
Medina, JJ
Gutiérrez, MI
2012

To assess pedestrians' perceptions of the walkability of the urban environment and pedestrian safety in Cali, Colombia. Standardised intercept interviews were conducted of 400 pedestrians walking in 20 randomly selected urban zones to ascertain frequency of walking, and perceptions of safety, the built environment and security. Four focus group meetings were held with community members and students addressing these issues in an open-ended forum. The study analysed quantitative data collected in street interviews and qualitative information from focus groups addressing respondents' views on...

Spatial Inequalities and Pedestrian Injuries in Cali, Colombia

Villaveces, A
Clough, L
Rodriguez, D
Bangdiwala, S
Gutierrez, N
Serre, M
2012

To determine the temporal and spatial distribution of pedestrian injuries in Colombia in relation to the socio-economic level of individuals and the place of event occurrence. Temporal and spatial analyses of pedestrian injuries using land use regression models were developed to assess the distribution and contributing factors to pedestrian injuries associated with urban infrastructure but focusing especially on socio-economic level of injured pedestrians and characteristics of the place where events occurred while accounting for temporal variations. Data from the land use regression...