ITS Berkeley

Associations Between Self-Efficacy and Children's Pedestrian Safety Following Training

Wells, H
Rouse, J
Johnston, A
Sisiopiku, V
Rodriguez, D
Combs, T
Schwebel, DC
2015

Pedestrian injury is a leading cause of unintentional pediatric death. Hundreds of deaths related to pedestrian injuries occur every year in children under 18. Virtual reality interventions to teach children safe pedestrian behavior have shown success. Increasing self-efficacy is consistently related to the induction and maintenance of behavior change following a variety of interventions. In children, self-efficacy is associated with intervention-driven changes in health and academic behaviors. Self-efficacy is also linked to child and adolescent pedestrian engagement, with children...

Publicidad Online Las Claves del Exito en Internet

Rodriguez, D
Villalon, M
Hurtado, O
Rica, R
2014

The Effect of Population Mobility on COVID-19 Incidence in 314 Latin American Cities: A Longitudinal Ecological Study with Mobile Phone Location Data

Kephart, J
Delclòs-Alió, X
Rodriguez, D
Sarmiento, O
Barrientos-Gutierrez, T
Ramirez-Zea, M
Quistberg, D
Bilal, U
Roux, AV Diez
2021
Little is known about the effect of changes in mobility at the subcity level on subsequent COVID-19 incidence, which is particularly relevant in Latin America, where substantial barriers prevent COVID-19 vaccine access and non-pharmaceutical interventions are essential to mitigation efforts. We aimed to examine the longitudinal associations between population mobility and COVID-19 incidence at the subcity level across a large number of Latin American cities.In this longitudinal ecological study, we compiled aggregated mobile phone location data, daily confirmed...

Health and Environmental Co-Benefits of City Urban Form in Latin America: An Ecological Study

Avila-Palencia, I
Sánchez, BN
Rodríguez
Perez-Ferrer
Miranda, J
Gouveia, N
Bilal, U
Useche, A
Wilches-Mogollon, M
Moore, K
Sarmiento, O
Roux, AV Diez
2022
We investigated the association of urban landscape profiles with health and environmental outcomes, and whether those profiles are linked to environmental and health co-benefits. In this ecological study, we used data from 208 cities in 8 Latin American countries of the SALud URBana en América Latina (SALURBAL) project. Four urban landscape profiles were defined with metrics for the fragmentation, isolation, and shape of patches (contiguous area of urban development). Four environmental measures (lack of greenness, PM2.5, NO2, and carbon footprint), two...

A Cooperative V2V Alert System to Mitigate Vehicular Traffic Shock Waves

Vince Rabsatt, Reuben
Gerla, Mario
2018

We address the problem of shockwave formation in uncoordinated highway traffic. The problem is caused by the combination of heavy traffic and small traffic perturbations or unexpected drivers actions. We propose a novel distributed communication protocol that helps mitigate upstream shockwave formation even with extremely low system penetration rates. Based on traffic information ahead, the Cooperative Advanced Driver Assistance System (CADAS) recommends non-intuitive velocity reductions in order to redistribute traffic more uniformly and eliminate traffic peaks. Simulation results show...

Not So Fast: A Study of Traffic Delays, Access, and Economic Activity in the San Francisco Bay Area

Taylor, Brian
Osman, Taner
Thomas, Trevor
Mondschein, Andrew
2016

The San Francisco Bay Area regularly experiences some of the most severe traffic congestion in the U.S. This past year both Inrix and the Texas Transportation Institute (TTI) ranked the Bay Area third only to Washington D.C. and Los Angeles in the time drivers spend stuck in traffic. The TTI estimated that traffic congestion cost the Bay Area economy a staggering $3.1 billion in 2014 (Lomax et al., 2015). Such estimates are based on the premise that moving more slowly than free-flow speeds wastes time and fuel, and that these time and fuel costs multiplied over millions of travelers in...

Planning Workshop - Seminar Series

Argote-Cabanero, Juan
Camel, Madonna
Hernandez, Maribel
2016

The University of California Center on Economic Competitiveness in Transportation (UCCONNECT) together with the California Department of Transportation (Caltrans) organized four seminars in areas of interest to the Division of Transportation Planning (DOTP). UCCONNECT and DOTP collaborated to identify topics and speakers within the consortium who could present their latest research findings on the selected areas. Each session in the series consisted of a 1-2 hour presentation followed by a Q&A discussion moderated by an expert in the field. The title of the first event in the...

From LOS to VMT, VHT and Beyond Through Data Fusion: Application to Integrate Corridor Management

Bayen, Alexandre
Gan, Qijian
Gomes, Gabriel
2016

Traffic performance metrics such as delay and Level Of Service (LOS), which are well documented in the Highway Capacity Manual (HCM), have been widely used by most of the transportation consulting companies, public agencies, and etc. For arterial delay analysis, prevailing commercial tools like Synchro have adopted the method proposed by the HCM, which is rooted in the Webster’s delay calculation proposed more than 50 years ago. The LOS is obtained using a lookup table that assigns a certain grade (from A to F) to the estimated delay according to its value. Without knowing detailed...

The California Fuel Tax Swap

Wachs, Martin
Garrett, Mark
Brown, Anne
2016

This project documents and analyzes the recent change in California transportation revenue collection programs that end discontinued the state sales tax on motor fuels and increased the state per gallon excise taxes on motor fuels.

Achieving Zero-Emission Mobility: The Role of Innovative Electric Vehicle Companies

Argote, Juan
Lee, Albert
Hernandez, Maribel
2016

On April 28, 2016, UCCONNECT hosted a symposium in Berkeley, CA on Achieving Zero-Emission Mobility: The Role of Innovative Electric Vehicle Companies. The symposium provided a platform for innovative and trendsetting electric vehicle (EV) companies to explain their latest business models and show how they can add value and contribute to the national dialogue on the transformation needed to achieve zero-emission transportation. Focus was also placed on identifying strategies that could potentially broaden the clean-transportation conversion by increasing “zero-emission vehicle” (ZEV)...