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Sponsor: RIMI

Agency Participation in the California Integrated Travel Program

Status

Complete

Project Timeline

August 1, 2022 - June 30, 2024

Principal Investigator

Jean-Daniel Saphores

Sponsor, Program & Award Number

RIMI: RIMI-4J

Areas of Expertise

Public Transit, Shared Mobility, & Active Transportation

Team Departmental Affiliation

Civil and Environmental Engineering

Project Summary

The California Integrated Travel Program (Cal-ITP) aims to introduce open payments across all of California’s public transit systems, enabling passengers to use any means of payment readily available to them and reducing or eliminating dependence on cash payments or specialized fare cards. Potential means of payment include credit cards, mobile phone apps or digital wallets, and prepaid debit cards. This shift will allow greater flexibility for passengers and transit agencies alike. This fare payment system will be supported by the implementation of General Transit Feed Specification (GTFS) – a data sharing protocol – across all transit agencies as well as GTFS Real Time, which allows passengers to find routes and schedules with tools such as Google and the Transit App and to track vehicle locations in real- time. While this effort is led by the state, with key activities carried out by the California Department of Transportation and the California State Transportation Agency, the full execution of Cal-ITP depends on each transit agency’s participation, which is voluntary at this time. Cal-ITP’s challenge will be to help the hundreds of California transit agencies of different sizes, capabilities, and diverse services transition to a coordinated fare payment system. This study will identify the tools and assistance that transit agencies will need to participate in Cal-ITP. The researchers, with support from the California Transit Association (CTA), will conduct a survey of California transit agencies to assess their knowledge of Cal-ITP, their understanding of the challenges of participating in Cal-ITP, and their awareness of assistance offered by the program. In addition, information will be gathered about agency characteristics related to their interest in Cal-ITP, capacity to participate, and attitudes about open payment systems.

Related Publications

policy brief | Sep 2025

Capacity Building is Key for Accelerating Open-loop Payments Adoption Among Transit Agencies

Read more

A Delphi Study of Technology and Policy Implications of RIMI Research on Public Transit and Shared Mobility

Status

In Progress

Project Timeline

February 5, 2022 - December 31, 2024

Principal Investigator

Michael McNally

Sponsor, Program & Award Number

RIMI: RIMI-4C

Areas of Expertise

Public Transit, Shared Mobility, & Active Transportation

Team Departmental Affiliation

Civil and Environmental Engineering

Project Summary

There is a need to assess the potential impacts of various technology and policy options for the Public Transit and Shared Mobility Pillar of the Resilient and Innovative Mobility Initiative (RIMI). One means to accomplish this is by conducting a Delphi study. A Delphi study is a sequential survey of experts where both the results and assessments of preliminary research are surveyed, collated, and assessed, and then recirculated to the same experts to allow them to update their responses given the responses and rationales of other participants. The logic is that forecasts from a structured panel are more accurate than those from unstructured groups. It is an iterative, anonymous approach that combines results from one iteration and feeds them back to the Delphi panel, in the process potentially eliminating outlying opinions. The iterations continue until a predefined criterion is met, typically a set number of iterations or achievement of consensus. The Delphi method was developed by the RAND Corporation in the 1950s to forecast the impacts of new technologies. As such, it is quite appropriate to assess the effectiveness of proposed policy options to critical problems facing California. This project will conduct a Delphi study with a panel consisting of the Principal Investigators of selected RIMI projects and associated statewide stakeholders. The tradeoff between panel size and the objective to achieve consensus will dictate the number of participants on the panel and the number of iterations. The data collected will not be limited to opinions from the participants but the researchers will also survey and provide participants with the results of research on current and proposed policies. Thus, for example, a participant’s initial assessment of the relative performance potential of a policy to address a particular problem may change after feedback from other participants (note that all panel members will be anonymous to other participants). The panel will include project stakeholders so the analysis results will reflect both research results as well as practical perspectives.

A Review of Data Systems to Track Zero-Emission Truck Adoption and Suggestions for Future Improvements

Status

Complete

Project Timeline

March 1, 2022 - January 31, 2025

Principal Investigator

Stephen Ritchie

Project Team

Craig Rindt

Sponsor, Program & Award Number

RIMI: RIMI-3D
(Subcontract to ITS-Davis)
(Also see this project page)

Areas of Expertise

Freight, Logistics, & Supply Chain Zero-Emission Vehicles & Low-Carbon Fuels

Team Departmental Affiliation

Civil and Environmental Engineering

Project Summary

California’s Advanced Clean Trucks (ACT) regulation requires original equipment manufacturers (OEMs) to manufacture zero emission vehicle (ZEV) trucks at an aggressive pace. The supporting regulation, the Advanced Clean Fleets (ACF) rule, is in development and will require fleets to purchase ZEV trucks in rapidly increasing numbers starting in 2024. OEMs and fleets will depend on each other to either supply or purchase ZEV trucks in order to meet the regulations. Furthermore, the production and purchases must match across a wide range of truck applications including drayage, short haul, delivery, heavy-duty pickups and vans, and vocational vehicles. Because fleets cannot operate ZEV trucks without appropriate infrastructure in place, electric utilities and hydrogen providers must work with OEMs and fleets to ensure that charging and hydrogen infrastructure is sited, installed, and operational by the time ZEV trucks are delivered to fleets. How will these two regulations stay on track? Will refueling infrastructure be installed at the pace and in the locations needed to support the regulations? Will there be a sufficient supply of ZEV truck models, and will production capacity in key market segments meet the requirements of fleets? Will appropriate incentives or other funding sources for both fleet truck purchase and infrastructure installation exist to ensure that ZEV market penetration proceeds on schedule? This project will develop a system to determine whether the ACT and ACF regulations are on track, and if not, what additional policies could enable ZEV market penetration to proceed on schedule. Researchers will work with agency staff, truck OEMs, fleets, and utilities to ascertain the best metrics for tracking ZEV market penetration including infrastructure rollout. Once metrics are defined, researchers will determine how best to collect and analyze data relevant to these metrics such that problems can be clearly identified. A database will be designed to store these data. Given that ZEV market penetration based on the ACT and ACF regulations will proceed for many years, this project will also develop a proposal for future funding and management of the tracking system.

Related Publications

research report | Jul 2025

A Review of Data Systems to Track Zero-Emission Truck Adoption and Suggestions for Future Improvements

Read more

Enhancing Student Outcomes While Strengthening Transit: An Analysis of LA Metro’s GoPass Fareless Pilot

Status

Complete

Project Timeline

September 1, 2022 - March 31, 2025

Principal Investigator

Jean-Daniel Saphores

Project Team

Farzana Khatun

Sponsor, Program & Award Number

RIMI: RIMI-4P

Areas of Expertise

Public Transit, Shared Mobility, & Active Transportation

Team Departmental Affiliation

Civil and Environmental Engineering

Project Summary

Many California students rely on public transit to travel to and from school. For low-income families, even low transit fares can be economically burdensome, leading some students to skip school or abstain from extra-curricular activities. Some school districts have partnered with transit agencies to offer free transit passes in an effort to help students overcome these obstacles, but few of these programs have been rigorously analyzed, either for their impacts on educational achievements or for their impacts on transit. This study will characterize the users of LA Metro's K-14 free transit pass program – the largest ever such program in the U.S. – and analyze users’ travel patterns (e.g., mode of transport to and from school, after school trips, trip purposes). Understanding the ridership impacts of free transit pass programs for K-14 students is essential for promoting educational and transportation equity. It is also critical for transit it attempts to recover from the drop in ridership caused by the COVID-19 pandemic.

Related Publications

policy brief | Dec 2025

LA County's GoPass Program Helped Build Transit Ridership While Enhancing Student Outcomes

Read more

Exploring Opportunities to Improve Transit Access to Community Resilience Centers for Safety and Evacuation Planning

Status

Complete

Project Timeline

September 25, 2023 - March 31, 2025

Principal Investigator

Elisa BorowskiElisa Borowski

Project Team

Jeannine Pearce

Sponsor, Program & Award Number

RIMI: 2024-31-4T
(Also see the UC ITS page)

Areas of Expertise

Public Transit, Shared Mobility, & Active Transportation

Team Departmental Affiliations

Civil and Environmental Engineering, Urban Planning and Public Policy

Project Summary

Community Resilience Centers and other social infrastructure programs merge community-based support with disruption response to connect individuals to needed resources. Currently, California’s Strategic Growth Council and Department of Food and Agriculture are leading efforts to create neighborhood-level Community Resilience Centers that provide year-round services and emergency resources. Considering the potential of these centers to enhance resilience and safety for historically marginalized individuals, it is critical for public sector decision-makers to understand their functions and impacts and to proactively improve transit integration and the flow of information about them and their services to the public. In collaboration with Climate Resolve, this project examines the functions and impacts of Community Resilience Centers on traveler decision-making in both standard and extreme event situations. The research process, developed in partnership with Climate Resolve, prioritizes the perspectives of historically marginalized populations, particularly those at the intersections of multiple marginalized identities, such as Black, Indigenous, People of Color (BIPOC), and low-income communities. Initial planning meetings were conducted with Climate Resolve and LA Metro, and listening sessions with historically marginalized groups took place with the Boyle Heights Arts Conservatory – one of LA’s first official resilience centers. These sessions were co-facilitated by community partners with a focus on identifying community members’ mobility and resource access experiences during standard and extreme event scenarios. The research findings will be shared with project partners Climate Resolve and LA Metro to inform future developments of transit-integrated social infrastructure programs and to enhance coordination between Community Resilience Centers and transit agencies in other communities across California.

Related Publications

policy brief | Jan 2025

Evaluating Equity in Transportation and Hazard Preparedness Plans: A Multi-Level Governance Approach

Read more
Preprint Journal Article | Apr 2025

Beyond Infrastructure: Patterns of Environmental Justice and Multi-Level Governance in Greater Los Angeles Transportation and Hazard Planning

Read more
policy brief | Jan 2025

Resilience Hubs are a Community Resilience Strategy That Should be Better Integrated Into Los Angeles’ Public Transit System

Read more
presentation | Mar 2025

Equity in Transportation Resilience

Read more
research report | Jan 2025

Reimagining Transportation as a Social Service to Build Resilience and Support Community Power

Read more

Categorizing and Prioritizing Trip Types to Support California’s VMT Reduction Goals

Status

In Progress

Project Timeline

October 27, 2022 - April 30, 2025

Principal Investigator

r-jayakrishnanR. (Jay) Jayakrishnan

Project Team

Michael Hyland, Michael McNally, Rony Gracious

Sponsor, Program & Award Number

RIMI: RIMI-3Q

Areas of Expertise

Travel Behavior, Land Use, & the Built Environment

Team Departmental Affiliation

Civil and Environmental Engineering

Project Summary

Vehicle miles traveled (VMT) is a well-accepted measure of the amount of travel taking place on a transportation system and thus, that system's climate impacts and sustainability characteristics. California Senate Bill (SB) 375 establishes a process for setting regional-level targets to reduce VMT, which necessitates incorporating VMT-based analysis into transportation planning and modeling in practice. The issue is whether VMT needs to be further classified into "types of VMT" that can be incorporated into the process to provide more sensitive policy analysis. Trips differ in both their purpose and in the mode or vehicle used, and consequently, VMT can be viewed as better or worse for economic productivity and sustainability based on these characteristics. For example, some car trips can be accomplished with web-based devices. Little research has pursued this notion for policy-making purposes. Using available data on trip purposes, and on vehicle mixes (in terms of fuel usage and environmental impact) used for trips, productivity-based indices can be developed to properly assess the environmental/energy impacts of the VMT associated with broad classes of trips. This project utilizes various data sources and an existing transportation system planning and analysis model (for a selected case study network) to develop methods for identifying and prioritizing potential VMT categories. Researchers will then use this information to evaluate the impact of different policies. This initial study will also serve as a trial for larger studies to evaluate system-wide policy implications. VMT category-based pricing, subsidy, taxation and land-use policies can be tested in selected network case studies. One simple example would be taxing VMT from electric vehicles less than gasoline powered vehicles.

Assessing the Charging-as-a-Service (CaaS) Model for EV Charging Deployment in California

Status

Complete

Project Timeline

September 25, 2023 - May 31, 2025

Principal Investigator

Matt DeanMatthew Dean

Project Team

Angela Yun

Sponsor, Program & Award Number

RIMI: 2024-33-3AA
(Also see the UC ITS page)

Areas of Expertise

Zero-Emission Vehicles & Low-Carbon Fuels

Team Departmental Affiliation

Civil and Environmental Engineering

Project Summary

To support Governor Newsom’s goal of 8 million zero-emission vehicles (ZEVs) by 2030, nearly 1.2 million chargers will be needed for light-duty ZEVs. Currently, 80% of electric vehicle charging occurs at home, however, less than 5% of this charging occurs at multi-unit dwellings (MUDs), where 30-40% of low-income households reside. Charging-as-a-service (CaaS) offers complete charging coverage through a monthly subscription, making it possible for MUD property owners to install chargers for renters and guests at minimal upfront costs. Other users, such as small businesses, school districts, and transit agencies, could also benefit from CaaS. Thus, CaaS shows promise as a means to help overcome ZEV adoption barriers in all of these segments, but to date there is little known about CaaS users’ and stakeholders’ experiences. This project aims to investigate the concept of CaaS and identify the various services and user groups that could benefit from this model. The researchers will collect first-of-its-kind data from CaaS participants (i.e., providers, end users, and utilities) through semi-structured interviews. The team will then code participant responses according to key themes, shedding light on perceptions, values, challenges, opportunities associated with the CaaS business model and its role in addressing the issue of charging infrastructure accessibility. The qualitative data will inform the development of policies and incentives aimed at accelerating the installation of charging infrastructure, particularly for vehicle segments that are challenging to electrify.

Related Publications

research report | Mar 2025

Assessing the Charging-as-a-Service (CaaS) Model for EV Charging Deployment in California

Read more
policy brief | Apr 2025

Charging-as-a-Service is an Innovative Business Model that Could Help with California’s Vehicle Electrification Goals

Read more
blog | Apr 2025

How a Charging-As-A-Service Model Could Support and Expand Electric Vehicle Charging Stations

Read more

Exploring Sensor Threats and Vulnerabilities in Intelligent Traffic Controllers

Status

Complete

Project Timeline

September 25, 2023 - May 31, 2025

Principal Investigator

Mohammad Al Faruque

Sponsor, Program & Award Number

RIMI: 2024-30-5M
(Also see the UC ITS page)

Areas of Expertise

Intelligent Transportation Systems, Emerging Technologies, & Big Data

Team Departmental Affiliation

Electrical Engineering and Computer Science

Project Summary

Advanced Transportation Controllers are integral in modern traffic management. They use a sophisticated array of sensors and actuators to balance traffic and prioritize safety for vehicles and pedestrians. However, these “cyber-physical systems” can be vulnerable to malicious attacks on their sensing and edge components, specifically inductive loop detectors and traffic lights. Exploiting these vulnerabilities, malicious actors can covertly manipulate traffic signals, causing congestion or dangerous situations, like allowing pedestrian and vehicle traffic simultaneously. While significant efforts have been made to enhance traffic flow efficiency theoretically, there has been no research on physical stealth attacks at intersections. The project aims to enhance the understanding of cyber-physical threats to modern traffic management systems and their societal, economic, and environmental consequences. To achieve this, the study will systematically investigate the vulnerability of Advanced Transportation Controllers to targeted malicious attacks. Specifically, the project will focus on potential attacks on the two key components mentioned earlier: inductive loop detectors and traffic lights. The first attack strategy, known as active magnetic cancellation, involves spoofing inductive loop detectors by generating a counter-magnetic field. The second aims to manipulate traffic lights by introducing dormant trojan circuitry. The project will comprehensively test and analyze these attack strategies under various conditions and configurations, using detailed traffic simulations to assess their broader impacts on the traffic grid.

Related Publications

research report | Jun 2026

Exploring Sensor Threats and Vulnerabilities in Intelligent Traffic Controllers

Read more
policy brief | Jun 2026

Can Combining Traffic Sensor Data Make Our Roads Safer?

Read more
other | May 2025

Custom Python scripts

Read more

White Paper: Supply Chain and Freight Transportation in California

Status

In Progress

Project Timeline

July 22, 2022 - June 15, 2025

Principal Investigator

Stephen Ritchie

Project Team

Craig Rindt, Youngeun Bae

Sponsor, Program & Award Number

RIMI: RIMI-5D
(Also see the UC ITS page)

Areas of Expertise

Freight, Logistics, & Supply Chain

Team Departmental Affiliation

Civil and Environmental Engineering

Project Summary

California continues to see its position as the nation’s largest gateway for international trade challenged due to a combination of factors, including increased costs (related to environmental regulation and operational inefficiencies), changes in international trade patterns related to geopolitical factors, and increased competition from ports on the East Coast. The resiliency of California’s supply chain and freight transportation system, and the impact of this system on various externalities that affect local communities, are similarly concerning. This project will engage researchers, experts, and public and private stakeholders to better understand the various factors affecting the evolution of the freight and goods movement sector in California. The project team will convene a panel of experts from the UC ITS community of researchers and provide this panel with opportunities to attend a series of listening sessions with global leading researchers, industry leaders, and other experts. These listening sessions will then be followed by one or more targeted workshops to assess, characterize, and propose a path forward for California’s supply chain and freight transportation system. The UC ITS panel will then ultimately produce a white paper containing a recommended path forward for California’s supply chain and freight transportation sector.

E-shopping Meets Electrified Self-Driving: Impacts on Warehousing, the Environment, and Environmental Justice

Status

Complete

Project Timeline

June 1, 2022 - June 30, 2025

Principal Investigator

Jean-Daniel Saphores

Project Team

Michael Hyland, Dewei Xiao

Sponsor, Program & Award Number

RIMI: RIMI-3G

Areas of Expertise

Freight, Logistics, & Supply Chain Intelligent Transportation Systems, Emerging Technologies, & Big Data

Team Departmental Affiliation

Civil and Environmental Engineering

Project Summary

The growth of e-commerce is changing not only retailing, household shopping, and travel, but also logistics and warehousing. Annual U.S. e-commerce sales soared from $136.5 billion to $870.8 billion between 2009 and 2021. In parallel, the number of warehouses in the U.S. has been growing at an increasing rate, jumping from 15,152 in 2010 to 19,190 in 2020. The growth in warehousing has been particularly strong in the Southern California Association of Governments (SCAG) region. Forecasts call for a 33% increase in the demand for warehouse space by 2040 compared to 2014. While the expansion of warehousing creates jobs and contributes to economic growth, it also raises concerns about air pollution, greenhouse gas emissions, noise, accidents, and quality of life in residential areas that neighbor large warehouses. The emergence of self-driving (automated) vehicles is also likely to deeply affect both how people shop and the logistics industry by substantially lowering the cost of freight transportation. This will impact the size, number, and location of both warehouses and brick-and-mortar retail stores. This project will explore the potential impacts of e-commerce and truck automation on warehousing in California by 2045 and identify potential state actions to preempt environmental and social justice impacts as the freight sector undergoes decarbonization. The researchers will develop various scenarios to study the impacts of moving goods from the Ports of Los Angeles and Long Beach to warehouses by zero-emission, self-driving vehicles (at a fraction of current costs) before being delivered to customers’ homes, neighborhood drop-off points, or stores. The results will inform the state’s freight action plan and help correct some of the environmental injustices linked to freight deliveries in California.

Related Publications

research report | Jun 2026

E-shopping Meets Electrified Self-driving: Impacts on the Number, Size, and Locations of Warehouses & Distribution Centers

Read more

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