Social and Behavioral Sciences Commons^™

Misconduct On Public Transit: An Exploratory Analysis Using The Comments Formerly Known As Tweets, Egbe Etu Etu, Asha Weinstein Agrawal, Imokhai Tenebe, Jordan Larot, Dang Minh Nhu Nguyen

Mineta Transportation Institute Publications

This project developed a simple methodology for using Twitter data to explore public perceptions about misconduct on public transit in California. The methodology allows future researchers to analyze tweets to answer questions such as: How frequent are tweets related to assault, abuse, or other misconduct on public transit? What concerns arise most frequently? What are the types of behaviors discussed? We collected and analyzed data from Twitter posts in California about various types of public transit misconduct from January 2020 to March 2023 to identify the nature and frequency of reported misconduct. Our findings reveal that harassment, uncivil behavior, and …

Economic Evaluation Of Route Choice Characteristics For Company Truck Drivers And Owner-Operator Truck Drivers In Southern California Freeways, Joseph J. Kim, Jose Alejandro Arroyo Turcios

Mineta Transportation Institute Publications

To contribute to the understanding of freeway capacity and financing options, this study evaluates the demand for truck-only toll lanes on Southern California freeways. The study implemented surveys to both company truck drivers and owner-operator truck drivers to estimate the value they place on time, reliability, and safety measures. The research team met face-to-face with both types of truck drivers near the Ports of Los Angeles and Long Beach to understand the drivers’ perspectives regarding truck-only toll lanes on Southern California freeways. A data set containing 45 surveys out of 62 survey responses were used for statistical analysis. The results …

Effect Of Weather Events On Travel Time Reliability And Crash Occurrence, Sonu Mathew, Srinivas S. Pulugurtha

Mineta Transportation Institute Publications

The magnitude of the effect of adverse weather conditions on road operational performance varies with the type of weather condition and the road characteristics of the road links and adjacent links. Therefore, the relationship between weather and traffic is always a concern to traffic engineers and planners, and they have extensively explored ways to integrate weather information into transportation systems. Understanding the influence of weather on operational performance and safety helps traffic engineers and planners to proactively plan and manage transportation systems. The main objective of this research is to evaluate the effect of adverse weather conditions on travel time …

Connected Simulation For Work Zone Safety Application, Vahid Balali

Mineta Transportation Institute Publications

Every year, over 60,000 work zone crashes are reported in the United States (FHWA 2016). Such work zone crashes have resulted in over 4,400 fatal and 200,000 non-fatal injuries in the last 5 years (FHWA 2016, BLS 2014). Apart from the physical and emotional trauma, the annual cost of these injuries exceeds $4 million-representing significant wasted resources. To improve work zone safety, this research developed a system architecture for unveiling high-risk behavioral patterns among highway workers, equipment operators, and drivers within dynamic highway work zones. This research implemented the use of a connected virtual environment, which is an immersive hyper-realistic …

Seismic Safety Standards Of Private School Buildings In The San Francisco Bay Area: An Exploratory Study, Charles Stauss

Master's Projects

The purpose of this study is to examine whether the Private Schools Building Safety Act of 1986 had an impact on the seismic safety of private school buildings in the San Francisco Bay Area. The Private Schools Building Safety Act was inspired by the Field Act of 1933 and subsequent legislation that significantly improved the seismic safety of California’s public schools. This paper begins by describing seismic activity characteristic of California and proceeds to elaborate upon legislation pertaining to the design and construction of school buildings. Following that is a description of the methods used to investigate the impact of …

Safety Considerations For All Road Users On Edge Lane Roads, Michael Williams, Marcial Lamera, Aleksander Bauranov, Carole Voulgaris, Anurag Pande

Mineta Transportation Institute Publications

Edge lane roads (ELRs), also known as advisory bike lanes or advisory shoulders, are a type of shared street where two-way motor vehicle (MV) traffic shares a single center lane, and edge lanes on either side are preferentially reserved for vulnerable road users (VRUs). This work comprises a literature review, an investigation of ELRs’ operational characteristics and potential road user interactions via simulation, and a study of crash data from existing American and Australian ELRs.

The simulation evaluated the impact of various factors (e.g., speed, volume, directional split, etc.) on ELR operation. Results lay the foundation for a siting criterion. …

Evaluating Financing Mechanisms And Economic Benefits To Fund Grade Separation Projects, Shailesh Chandra, Mehran Rahmani, Timothy Thai, Vivek Mishra, Jacqueline Camacho

Mineta Transportation Institute Publications

Investment in transportation infrastructure projects generates benefits, both direct and indirect. While emissions reductions, crash reductions, and travel time savings are prominent direct benefits, there are indirect benefits in the form of real estate enhancements that could pay off debt or loan incurred in the improvement of the infrastructure itself. Studies have shown that improvements associated with rail transportation (such as station upgrades) trigger an increase in the surrounding real estate values, increasing both the opportunity for monetary gains and, ultimately, property tax collections. There is plenty of available guidance that provides blueprints for benefits calculations for operational improvements in …

Freight Demand Model For Southern California Freeways With Owner–Operator Truck Drivers, Joseph J. Kim, Samuel Dominguez, Luis Diaz

Mineta Transportation Institute Publications

This study evaluates the demand for truck-only toll lanes on Southern California freeways with owner–operator truck drivers. The study implemented the stated preference survey method to estimate the value placed by drivers on time, reliability, and safety measures using various scenarios geared towards assessing those values. The project team met face-to-face with owner- operator truck drivers near the Ports of Los Angeles and Long Beach to understand the drivers’ perspectives regarding truck-only toll lanes on Southern California freeways. A data set containing 31 survey responses is obtained and used for statistical data analysis using analysis of variable (ANOVA) and two …

A Micro-Scale Analysis Of Cycling Demand, Safety, And Network Quality, Sherry Ryan, Ana Garate, Diane Foote

Mineta Transportation Institute Publications

This research uses a unique database of cycling volumes from the San Diego region to estimate cycling demand and cycling collision models. Continuous cycling count data collected from 34 automated counters are used to extrapolate over 1,400 short duration counts to average annual daily bicycle volumes (AADB). Network characteristics, built environment, and socio-economic characteristics are primary independent variables employed in the modeling. A key contribution of this research is to incorporate both a whole-network measure (betweenness centrality) and a network quality measure (LTS) in estimating cycling volumes. This research also improves upon cycling risk assessment by using more rigorous exposure …

Is The Transit Industry Prepared For The Cyber Revolution? Policy Recommendations To Enhance Surface Transit Cyber Preparedness, Scott Belcher, Terri Belcher, Eric Greenwald, Brandon Thomas

Mineta Transportation Institute Publications

The intent of this study is to assess the readiness, resourcing, and structure of public transit agencies to identify, protect from, detect, respond to, and recover from cybersecurity vulnerabilities and threats. Given the multitude of connected devices already in use by the transit industry and the vast amount of data generated (with more coming online soon), the transit industry is vulnerable to malicious cyber-attack and other cybersecurity-related threats. This study reviews the state of best cybersecurity practices in public surface transit; outlines U.S. public surface transit operators’ cybersecurity operations; assesses U.S. policy on cybersecurity in public surface transportation; and provides …

Crime And Harassment On Public Transportation: A Survey Of Sjsu Students Set In International Context, Asha Weinstein Agrawal, Anastasia Loukaitou-Sideris, Cristina Tortora, Yajing Hu

Mineta Transportation Institute Publications

Communities around the world are gradually becoming aware that transit riders, and especially women, are often victims of a wide range of offenses of a sexual nature that happen on buses and trains, and at bus stops and train stations. Better understanding the extent and nature of sexual harassment on transit is a critical issue for transit operators and society at large. If fear of sexual crime limits if and how people ride transit, the result is reduced mobility for certain segments of the population, as well as lost ridership for transit agencies.

For this study, we surveyed 891 students …

Active Transportation And Health Effects Of Safe Routes To Schools (Sr2s) Projects And Planning, Christopher E. Ferrell

Mineta Transportation Institute Publications

On July 29, 2005 Congress passed the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU), the federal government’s transportation bill, in part, designating $612 million over five years to go to a relatively new funding program: Safe Routes to School (SR2S). The legislation mandated that state departments of transportation (DOTs) receive annual funding in an amount proportional to the number of primary and middle school grade children enrolled in their states. State DOTs could then grant that money to state, local, and regional agencies, as well as non-profit organizations to fund SR2S programs.

Improving public health …

Walk N’ Roll (Wnr) San Jose: An Initiative To Promote Active Transportation And Safe Routes To School For Children In San Jose, California, François Xavier Hans Voltaire

Master's Projects

How effective is the Walk n’ Roll (WnR) program in promoting active transportation near school zones in San Jose, California? The intent of this research question is to discern the effect of the City of San Jose’s WnR program in encouraging children to actively travel to school (walking/cycling) and using other means such as scooters and skateboards. This research will use data from 2012-2018 to measure the efficacy of the program. This project strives to discover whether the tools and strategies that the program is using impact the augmentation level of the number of students who actively travel and transport …

Bikesharing And Bicycle Safety, Elliot Martin, Adam Cohen, Jan L. Botha, Susan Shaheen

Mineta Transportation Institute Publications

The growth of bikesharing in the United States has had a transformative impact on urban transportation. Major cities have established large bikesharing systems, including Boston, Chicago, Denver, Minneapolis-Saint Paul, New York City, Salt Lake City, the San Francisco Bay Area, Seattle, Washington DC, and others. These systems began operating as early as 2010, and no fatalities have occurred within the US as of this writing. However, three have happened in North America—two in Canada and one in Mexico. Bikesharing has some qualities that appear inherently unsafe for bicyclists. Most prominently, helmet usage is documented to be quite low in most …

A Framework For Developing And Integrating Effective Routing Strategies Within The Emergency Management Decision-Support System, Research Report 11-12, Anurag Pande, Frances Edwards, Joseph Yu

Mineta Transportation Institute Publications

This report describes the modeling, calibration, and validation of a VISSIM traffic-flow simulation of the San José, California, downtown network and examines various evacuation scenarios and first-responder routings to assess strategies that would be effective in the event of a no-notice disaster. The modeled network required a large amount of data on network geometry, signal timings, signal coordination schemes, and turning-movement volumes. Turning-movement counts at intersections were used to validate the network with the empirical formula-based measure known as the GEH statistic. Once the base network was tested and validated, various scenarios were modeled to estimate evacuation and emergency vehicle …

Risk And Safety Assessment In Child Welfare: Instrument Comparisons, Amy C. D’Andrade, Michael Austin, Amy Benton

Amy C. D’Andrade

The assessment of risk is a critical part of child welfare agency practice. This review of the research literature on different instruments for assessing risk and safety in child welfare focuses on instrument reliability, validity, outcomes, and use with children and families of color. The findings suggest that the current actuarial instruments have stronger predictive validity than consensus-based instruments. This review was limited by the variability in definitions and measures across studies, the relatively small number of studies examining risk assessment instruments, and the lack of studies on case decision points other than the initial investigation.

Risk And Safety Assessment In Child Welfare: Instrument Comparisons, Amy C. D’Andrade, Michael J. Austin, A Benton

Faculty Publications

The assessment of risk is a critical part of child welfare agency practice. This review of the research literature on different instruments for assessing risk and safety in child welfare focuses on instrument reliability, validity, outcomes, and use with children and families of color. The findings suggest that the current actuarial instruments have stronger predictive validity than consensus-based instruments. This review was limited by the variability in definitions and measures across studies, the relatively small number of studies examining risk assessment instruments, and the lack of studies on case decision points other than the initial investigation.

California Transportation Security Summits, Mti Report S-01-04, Mti

Mineta Transportation Institute Publications

In the aftermath of September 11, it became undeniably clear that terrorists target civil transport systems and are willing to use transport systems as weapons of mass destruction as well as targets. In response to this threat, America ’s transportation community must adopt more effective measures to insure the safety of the millions of passengers and employees who use or work in transit facilities every day. To meet this heightened responsibility, leaders of the transportation community need high-quality information and appropriate policy guidance. To help meet this need, the Mineta Transportation Institute (MTI)—a leader in transportation terrorism research since the …

Protecting Public Surface Transportation Against Terrorism And Serious Crime: Continuing Research On Best Security Practices, Mti Report 01-07, Brian M. Jenkins

Mineta Transportation Institute Publications

Terrorist attacks on commercial aviation had declined significantly after reaching a high point in the 1970s. The devastating consequences of the four coordinated hijackings and deliberate crashes of three of the planes into the World Trade Center in New York and the Pentagon in Washington, D.C., on September 11, 2001—an event unprecedented in the annals of terrorism—have wiped out all sense of progress and focused national attention on aviation security. Meanwhile, terrorists have continued to attack public surface transportation worldwide with no indication of abatement in these attacks.1 With large-scale indiscriminate violence clearly the reality of contemporary terrorism and growing …