ITS Berkeley

Private and Public Modes of Bicycle Commuting: A Perspective on Attitude and Perception

Tirado, A
Nazelle, A De
González, D
Cole-Hunter, T
Garcia-Aymerich, J
Martinez, D
Anaya, E
Rodriguez, D
Jerrett, M
Nieuwenhuijsen, MJ
2016

Public bicycle-sharing initiatives can act as health enhancement strategies among urban populations. The aim of the study was to determine which attitudes and perceptions of behavioural control toward cycling and a bicycle-sharing system distinguish commuters with a different adherence to bicycle commuting.  Methods: The recruitment process was conducted in 40 random points in Barcelona from 2011 to 2012. Subjects completed a telephone-based questionnaire including 27 attitude and perception statements. Based on their most common one-way commute trip and...

Effect of a Community-Based Pedestrian Injury Prevention Program on Driver Yielding Behavior at Marked Crosswalks

Sandt, LS
Marshall, S
Rodriguez, D
Evenson, K
Ennett, ST
Robinson, W
2016
Few studies have comprehensively evaluated the effectiveness of multi-faceted interventions intended to improve pedestrian safety. “Watch for Me NC” is a multi-faceted, community-based pedestrian safety program that includes widespread media and public engagement in combination with enhanced law enforcement activities (i.e., police outreach and targeted pedestrian safety operations conducted at marked crosswalks) and low-cost engineering improvements at selected crossings. The purpose of this study was to estimate the effect of the law enforcement and engineering improvement components of the...

Air Pollution, Social Disadvantage, and Walking in Six United States Cities: the Multi-Ethnic Study of Atherosclerosis

Chen, YH
Adar, S
Marshall, J
Hirsch, J
Rodriguez, D
Evenson, K
Sampson, P
Magzamen, S
Kaufman, J
Roux, A
2016
Physical activity may be influenced by walking opportunities, which can differ substantially across neighborhoods. Air pollution similarly varies by location. It remains unclear whether more walking occurs in highly polluted neighborhoods and whether socially disadvantaged populations are less likely to experience walkable neighborhoods with clean air. We studied the spatial distributions and associations of neighborhood level air pollution, walkability, and social factors with self-reported walking. Overall walking was reported between 2010-2012 by 3,661 Multi-Ethnic Study of Atherosclerosis...

Land Development Impacts of BRT in a Sample of Stops in Quito and Bogotá

Rodriguez, DA
Vergel-Tovar, E
Camargo, WF
2016

Despite the growing popularity of bus rapid transit (BRT), little is known about its impacts on land development. In this paper we examine the land development impacts of BRT in Bogotá and Quito, two cities that have made a variety of BRT investments over the last two decades and with Curitiba, they have been world pioneers of BRT. Relying on 10 years of data, we use a quasi-experimental research design to quantitatively examine changes in land development in both cities. Outcomes include land market characteristics such as built area added per year (both cities), units added (Quito...

How Much are Built Environments Changing, and Where?: Patterns of Change by Neighborhood Sociodemographic Characteristics Across Seven US Metropolitan Areas

Hirsch, J
Grengs
Schulz
Adar
Rodriguez
Brines
Roux, AV Diez
2016

Investments in neighborhood built environments could increase physical activity and overall health. Disproportionate distribution of these changes in advantaged neighborhoods could inflate ...

Changes in Walking, Body Mass Index, and Cardiometabolic Risk Factors Following Residential Relocation: Longitudinal Results From the CARDIA Study

Braun, L
Rodriguez, DA
Song, Y
Meyer, KA
Lewis, CE
Reis, JP
Gordon-Larsen, P
2016
While many studies have found the built environment to be associated with walking, most have used cross-sectional research designs and few have examined more distal cardiometabolic outcomes. This study contributes longitudinal evidence based on changes in walking, body mass index (BMI), and cardiometabolic risk following residential relocation. We examined 1079 participants in the...

Neighborhood Sociodemographics and Change in Built Infrastructure

Hirsch, JA
Green, GF
Peterson, M
Rodriguez, DA
Gordon-Larsen, P
2016

While increasing evidence suggests an association between physical infrastructure in neighborhoods and health outcomes, relatively little research examines how neighborhoods change physically over time and how these physical improvements are spatially distributed across populations. This paper describes the change over 25 years (1985–2010) in bicycle lanes, off-road trails, bus transit service and parks, and spatial clusters of changes in these domains relative to neighborhood sociodemographics in four US cities that are diverse in terms of geography, size, and population. Across all...

The Relationship Between Bicycle Commuting and Perceived Stress: A Cross-sectional Study

Avila-Palencia, I
Nazelle, A De
Cole-Hunter, T
Donaire-Gonzalez, D
Jarrett, M
Rodriguez, D
Nieuwenhuijsen, MJ
2017

Active commuting — walking and bicycling for travel to and/or from work or educational addresses — may facilitate daily, routine physical activity. Several studies have investigated the relationship between active commuting and commuting stress; however, there are no studies examining the relationship between solely bicycle commuting and perceived stress, or studies that account for environmental determinants of bicycle commuting and stress. The current study evaluated the relationship between bicycle commuting, among working or studying adults in a dense urban setting, and perceived...

Un Enfoque para la Integración de Dispositivos IoT en el Desarrollo de SIG en la Nube

Rodriguez, D
Rodríguez, J
Zúñiga, M
Solano, L
2017

Cloud computing and Internet of Things (IoT) as technological support to the construction of Geographic Information Systems (GIS) is changing the way these systems are developed and employed. The technological infrastructure provided by cloud providers and used as deployment platform enables GIS to take advantage of its storage and processing capabilities, whereas using IoT devices automate the data collection process. However, current implementations of GIS, whose services are used on cloud environments and interact with IoT devices, are realized in an ad hoc manner, without...

Municipal Investment in Off-Road Trails and Changes in Bicycle Commuting in Minneapolis, Minnesota over 10 years: A Longitudinal Repeated Cross-sectional Study

Hirsch, JA
Meyer
Peterson, M
Zhang, L
Rodriguez, DA
Gordon-Larsen, P
2017

We studied the effect of key development and expansion of an off-road multipurpose trail system in Minneapolis, Minnesota between 2000 and 2007 to understand whether infrastructure investments are associated with increases in commuting by bicycle. We used repeated measures regression on tract-level (N = 116 tracts) data to examine changes in bicycle commuting between 2000 and 2008–2012. We investigated: 1) trail proximity measured as distance from the trail system and 2) trail potential use measured as the proportion of commuting trips to destinations that might traverse the trail system....