ITS Berkeley

Best Practices for the Public Management of Electric Scooters

Reinhardt, Karl
Deakin, Elizabeth, SM., J.D.
2020

This research projects evaluates the social, environmental, and safety impacts of shared electric scooters (e-scooters)’ through a literature review, a nationwide scan of state and local laws and regulations, and a case study of Oakland’s experience with e-scooters, including an analysis of the city’s user survey and our own in-depth interviews. E-scooters offer an enjoyable, low-cost travel option, but are used mainly by young, affluent, white males. To improve equity, cities are requiring e-scooter rental companies to serve low-income and minority communities and some further mandate...

Transit to California’s National Parks: An Assessment of Visitation and Sociodemographic Barriers

Zhuang, Winnie
2024

California boasts nine national parks that are home to a plethora of recreational, cultural, and professional opportunities. It is no surprise that national parks draw in millions of recreational and non-recreational trips from across the country and internationally, however how visitors choose to arrive at these federal lands is a major consideration for land management, policy, and infrastructure decisions. According to the National Park Service’s Visitor Use Statistics, an overwhelming majority of visitors arrive by automobile. Alternative transportation options to national parks in...

The Development Of An Accident Database To Structure Land Use Regulations In Airport Runway Approach Zones Part II

Cooper, Douglas L.
Chira-chavala, T.
1998

This report presents and describes the expanded database containing 873 aviation accidents which occurred within five miles of an airport. Section 2 contains a description of the development of the database and a discussion of the criteria used in selecting accidents for the database. Section 3 provides a description of the database itself as well as a set of statistics that provide a comprehensive overview of the accidents. A set of aircraft accident scatter plots developed from the accident data points is presented in section 4. The purpose of these plots is to provide a picture of the...

The Transforming Transportation Ecosystem — A Call to Action

Macfarlane, Jane
2019

The transportation landscape is in transition. Rising congestion, failing infrastructure, changing behaviors, adapting to a more inclusive definition of mobility, the desire for cleaner and more efficient engines, and grappling with the role of autonomous vehicles and drones, to name just some of the factors, demands that we take a fresh approach to designing for mobility. Yet the rapid pace of technology development is creating emerging trends that are driving change faster than our ability to model, design, and manage them. This could potentially result in undesirable economic,...

Strategies to Preserve Transit-accessible Affordable Housing in Southern California

Parker, Madeleine E.G., MPA
Chapple, Karen, PhD
Park, Yuju, MCP
2023

This report highlights risk and prioritization factors for housing developments with expiring affordability protections, focused on preserving transit-accessible affordable housing. It presents a regional framework for identifying and preserving subsidized affordable housing in the Southern California Association of Governments (SCAG) region (Los Angeles, Imperial, Orange, Riverside, San Bernardino, and Ventura counties). First, we analyze data from the California Housing Partnership (CHPC) and the National Housing Preservation Database (NHPD) to understand risk factors for expiring...

Some Observations Of Highway Traffic In Long Queues

Smilowitz, Karen
Daganzo, Carlos
Cassidy, Michael
Bertini, Robert
1998

The arrival times of vehicles traveling southbound along a two-lane, bi-directional highway were recorded at eight neighboring locations upstream of a bottleneck caused by an oversaturated traffic signal. Cumulative curves constructed from these observations describe completely and in great detail the evolution of the resulting long queues. These queues formed directly upstream of the signal when the signal's service rate fell below the southbound arrival rates, and never formed away from the bottleneck. The predictability of bottlenecks like the one studied here can be exploited to manage...

Improving The Representation Of Human Error In The Use Of The Flight Crew Human Factors Integration Tool

Gosling, Geoffrey
Roberts, Karlene H.
Jayaswal, Arpana
1998

In May 1996, the FAA announced a new and innovative approach to reach a goal of "zero accidents," known as the Global Analysis and Information Network (GAIN). This would be a privately owned and operated international information infrastructure for the collection, analysis, and dissemination of aviation safety information, that would involve the use of a broad variety of worldwide aviation data sources, coupled with comprehensive analytical techniques, to facilitate the identification of existing and emerging aviation safety problems. A major component of the GAIN approach is the...

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...

Universal Basic Mobility Pilots in Oakland and Los Angeles: Striking a Balance Between Accessibility and Sustainability

Romero, Sandra, MCP
2024

The Universal Basic Mobility (UBM) pilots in Oakland and Los Angeles, launched in 2021, were innovative initiatives to address transportation equity and access issues in historically underserved communities. These experimental programs examined the impact of providing flexible transportation benefits to low-income residents. However, the current program designs fall short of achieving accessibility and sustainability objectives. Instead, they serve as initial steps in exploring UBM as a potential transportation equity strategy. The report explores the motivation behind local agencies...

Assessing the Variation of Curbside Safety at the City Block Level

Medury, Aditya, PhD
Vlachogiannis, Dimitris;
Grembek, Offer, PhD
2020

Investigating the dynamics behind the likelihood of vehicle crashes has been a focal research point in the transportationsafety field for many years. However, the abundance of data in today's world generates opportunities for deepercomprehension of the various parameters affecting crash frequency. This study incorporates data from many differentsources including geocoded police-reported crash data, curbside infrastructure data and socio-demographic data for thecity of San Francisco, CA. Findings revealed that the GFMNB model provides a better statistical fit than the FMNB andNB model in...