<?xml version="1.0" encoding="utf-8"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>TRB Publications Index</title><link>http://pubsindex.trb.org/</link><atom:link href="http://pubsindex.trb.org/common/TRIS Suite/feeds/rss.aspx?tc=NN%3AMsyv" rel="self" type="application/rss+xml" /><description></description><language>en-us</language><copyright>Copyright © 2015. National Academy of Sciences. All rights reserved.</copyright><docs>http://blogs.law.harvard.edu/tech/rss</docs><managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor><webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster><image><title>TRB Publications Index</title><url>http://pubsindex.trb.org/Images/PageHeader-wTitle.png</url><link>http://pubsindex.trb.org/</link></image><item><title>Elevating Urban Public Transit: Consensus-Based Expert Study on Urban Air Mobility and Aerial Cable Car Integration</title><link>http://pubsindex.trb.org/view/2709303</link><description><![CDATA[Airspace is increasingly emerging as a relevant dimension for urban mobility. Urban cable cars, a prime example of airborne modes, have already succeeded in emerging and developing countries, supplementing conventional public transit. However, aerial cable cars are less prevalent in industrialized nations, and integration with high-quality transit in such countries requires careful consideration. Therefore, this study identifies impacts, challenges, and stakeholders associated with cable cars, determines common challenges, and suggests appropriate use cases. An online consensus-based two-wave expert survey involving 63 high-caliber participants from engineering and consulting companies, public authorities, transit agencies, research institutions and cable car manufacturers yielded more than 4,700 answers. Key findings from consolidated expert knowledge indicated that cable cars could effectively supplement transit in industrialized countries. Positive impacts include connectivity to transit, reliability owing to minimal road-level competition, direct connections over obstacles, and being an attractive transit option. Negative impacts include privacy concerns, property ownership interference, limited access to adjacent sites along routes owing to aerial routing, lower capacity compared with conventional transit, and knowledge gaps. Handling passenger transfers between cable cars and other transit modes owing to height differences and passenger volumes poses service challenges. Transparent communication with stakeholders is crucial for project acceptance. Municipalities, operators/planners, politicians, and manufacturers are key stakeholders. Cable cars are considered a suitable aerial transit mode, with accessibility and safety levels similar to those of traditional transit modes. High demand is anticipated, especially when bridging barriers. In conclusion, cable cars can complement transit and this study provides valuable consensus-proven planning guidance for policy makers and practitioners.]]></description><pubDate>Wed, 03 Jun 2026 09:07:22 GMT</pubDate><guid>http://pubsindex.trb.org/view/2709303</guid></item><item><title>Exploring Motivations for Electrification of Ride-Sourcing Services: A Tripartite Evolutionary Game Perspective</title><link>http://pubsindex.trb.org/view/2684231</link><description><![CDATA[With the advancement in battery technology, electric vehicles have emerged as a feasible alternative for ride-sourcing. In various cities worldwide, policies promoting ride-sourcing electrification have been implemented. Despite these efforts, significant challenges remain, particularly with respect to the cooperative mechanism among various stakeholders. To address this issue, this study examines the motivations for ride-sourcing electrification through a tripartite evolutionary game framework, consisting of the government, ride-sourcing platforms, and ride-sourcing drivers. The basic model is constructed by considering factors such as social benefits, environmental benefits, subsidies, penalties, drivers’ commission rates, and transaction revenues. On the basis of this, the evolutionary stable strategies of each stakeholder and the system are analyzed. Further, a numerical study is conducted. The results indicate that the strategy of each stakeholder is influenced by the strategies of the others. Additionally, to promote the electrification of ride-sourcing more effectively, the government should consider both social and environmental benefits, as well as the balance between subsidies and penalties. For ride-sourcing platforms, attention should focus on the additional benefits resulting from electrification externalities. With respect to ride-sourcing drivers, their strategies are jointly influenced by factors such as revenues and commission rates. Based on these findings, this study offers valuable policy implications for both policymakers and platforms.]]></description><pubDate>Thu, 26 Mar 2026 13:38:05 GMT</pubDate><guid>http://pubsindex.trb.org/view/2684231</guid></item><item><title>Reinventing the Right of Way: Policy, Technical, and Economic Implications of Siting Transmission Lines Along Transportation Corridors: Proceedings of a Workshop—in Brief</title><link>http://pubsindex.trb.org/view/2586795</link><description><![CDATA[Meeting the United States' growing demand for reliable, resilient, and affordable energy will require expanded electric transmission capacity across the nation. As grid planners identify paths to accomplishing this expansion, the co-location of transmission lines along highway and rail rights of way (ROWs) may be one option for siting future transmission infrastructure. While this approach can potentially offer benefits for feasibility, cost-effectiveness, and public acceptance, there are few successful examples of this approach to date and many policy, logistical, design, and construction challenges to consider. To provide a forum for discussing opportunities for the use of transportation ROWs for electrical transmission, the challenges involved, and potential solutions to overcome barriers, the National Academies of Sciences, Engineering, and Medicine hosted the workshop on Reinventing the Right of Way: Policy, Technical, and Economic Implications of Siting Transmission Lines Along Transportation Corridors on April 7-9, 2025. The workshop convened stakeholders in the planning, operations, ownership, use, and regulation of transmission projects and transportation ROWs to establish a shared understanding of the issues and elicit constructive suggestions for action.]]></description><pubDate>Mon, 08 Sep 2025 14:53:18 GMT</pubDate><guid>http://pubsindex.trb.org/view/2586795</guid></item><item><title>The Market Potential of Autonomous Trucks in the United States: An Industry Review</title><link>http://pubsindex.trb.org/view/2572987</link><description><![CDATA[The U.S. trucking industry has the potential to be an early adopter of autonomous vehicles. The trucking industry hauls the majority of U.S. freight by weight and has a vast infrastructure network. Numerous business cases and routes may be able to utilize autonomous trucks. The trucking industry consumes more fuel and has more crashes than other modes of freight transportation. Trucking companies may be able to reduce costs through labor savings and increased utilization of trucks. All the dynamics of market size, infrastructure, fuel consumption, safety, and cost savings make the trucking industry a potential early adopter of autonomous vehicles. For autonomous technology to be applied to trucks in the United States there needs to be interest from technology developers, truck manufacturers, and trucking companies; government support to allow the testing and deployment of autonomous trucks on public roads; and acceptance from the public who will share the road with autonomous trucks. Given that autonomous truck deployments are in the beginning stages of being tested on public roads, there needs to be a comprehensive review of the market potential of autonomous trucks from the perspective of all involved stakeholders. To provide this comprehensive overview, this paper reviews the current dynamics of autonomous truck deployments in the United States, including deployment markets, business cases, adoption timelines, and logistics-, manufacturing-, operations-, technology-, and government partnerships. The paper concludes with the possible benefits of and barriers to autonomous trucks to illustrate what may drive or impede their U.S. deployment and market potential.]]></description><pubDate>Fri, 11 Jul 2025 08:39:01 GMT</pubDate><guid>http://pubsindex.trb.org/view/2572987</guid></item><item><title>Envisioning the Future of U.S. Airports</title><link>http://pubsindex.trb.org/view/2446970</link><description><![CDATA[Over the next several decades, airports must confront diverse challenges that span factors such as operations, environmental sustainability, and integration with broader intercity and local transportation networks. Furthermore, airports must confront these challenges within the context of their local communities; airports are expected to be economic engines, good neighbors, and resilient in response to natural or man-made disasters. While each airport must confront its own unique manifestation of these challenges, the aviation system as a whole will benefit when airports’ planning efforts are founded in a shared, aspirational vision for what the future might look like. This report provides such a vision. Based on a visioning exercise conducted with a wide variety of airport stakeholders, the research report identifies potential future outcomes and the issues and challenges that will need to be addressed to achieve the desired future. An appendix contextualizes this future vision by exploring the history and rationale of the legislation and regulations that govern airports and brought us to where we are today.]]></description><pubDate>Sat, 02 Nov 2024 16:43:09 GMT</pubDate><guid>http://pubsindex.trb.org/view/2446970</guid></item><item><title>Developing a Guide for New Mobility Options in Travel Demand Forecasting and Modeling</title><link>http://pubsindex.trb.org/view/2384861</link><description><![CDATA[The transportation field is undergoing a transformative change in response to several technological innovations resulting in the emergence and widespread adoption of new mobility options (NMOs) such as shared micro-mobility, transportation networking companies (TNCs), and connected and autonomous vehicles (CAVs). It is in this context that the project “Incorporating New Mobility Options into Travel Demand Forecasting and Modeling," NCHRP 20-102 (29), was envisioned. The research products from the research should offer practical guidance to transportation agency professionals on how to accommodate the influence of NMOs in their jurisdictions. A summary of how the emergence of these technologies is affecting the transportation system and their potential for influencing travel demand forecasting models (TDFMs) are discussed by NMO in chapter 1. Chapter 2 provides an overview of the comprehensive literature review task undertaken. Chapter 3 provides a summary of stakeholder survey preparation and briefly summarizes the survey results. Chapter 4 discusses the guide. Finally, Chapter 5 presents plans for potential implementation and future research.]]></description><pubDate>Sat, 01 Jun 2024 17:18:40 GMT</pubDate><guid>http://pubsindex.trb.org/view/2384861</guid></item><item><title>Taxonomy and Terms for Stakeholders of Older Adult Mobility</title><link>http://pubsindex.trb.org/view/2371672</link><description><![CDATA[The purpose of this E-Circular is to provide a reference document for usage of terminology clarification to be used by stakeholders in older adult mobility. This includes professionals and groups engaged in driver evaluation and rehabilitation services; research and program development; education and training; alternative transportation; and others (e.g., psychologists, social workers) who may encounter older adults with limited mobility and be asked to help identify potential solutions. It is hoped that this publication will foster improved communication among those who are involved in preserving and extending safe, independent community mobility for older persons.]]></description><pubDate>Mon, 29 Apr 2024 18:30:38 GMT</pubDate><guid>http://pubsindex.trb.org/view/2371672</guid></item><item><title>Advanced Air Mobility and Community Outreach: A Primer for Successful Stakeholder Engagement</title><link>http://pubsindex.trb.org/view/2350767</link><description><![CDATA[This report offers strategies and tools to help airport operators encourage and promote engagement with advanced air mobility (AAM) operators, government agencies, and communities. The report covers a broad scope of engagement issues, including the emerging topics of equity and environmental justice. The report will be of particular interest to airport industry practitioners wishing to integrate stakeholder and community engagement into local planning efforts as AAM develops and evolves in their regions.]]></description><pubDate>Mon, 18 Mar 2024 12:06:56 GMT</pubDate><guid>http://pubsindex.trb.org/view/2350767</guid></item><item><title>Traffic Safety Culture: Conduct of Research Report</title><link>http://pubsindex.trb.org/view/2335055</link><description><![CDATA[Traffic safety culture (TSC) is a complex topic spanning a range of sociological and philosophical concepts as they relate to transportation safety and the systemic framework that produces different kinds of traffic safety-related outcomes. Researchers have defined TSC as “a social climate in which traffic safety is highly valued and rigorously pursued” (Girasek, 2012, p. 40) or “the shared belief of a group of people, which influences road user behaviors and stakeholder actions that impact traffic safety” (Ward et al., 2019, p. 8). These broad definitions are generally useful for describing the complex nature of TSC and provide functional terms. Throughout this report, TSC is used to refer to this complex system of social and cultural factors that produce certain outcomes within the surface transportation system in the United States. This final report summarizes the efforts of National Cooperative Highway Research Program (NCHRP) Project 17-96: Traffic Safety Culture Research Roadmap. The sections of this report synthesize the results of research conducted to accomplish the six tasks of this project and summarize the content contained in multiple interim deliverables, including the Literature Review and Stakeholder Engagement Plan Technical Memorandum produced at the completion of Task 1, the Stakeholder Engagement Technical Memorandum produced at the end of Task 2, the TSC Research Roadmap Outline documented in the Task 3 technical memorandum, the Interim Report completed for Task 4, and the Traffic Safety Culture Research Roadmap Report completed for Task 5. When the authors refer to the TSC Research Roadmap, they are typically referring to the Traffic Safety Culture Research Roadmap Report. This project is intended to contribute to the body of research on TSC by providing a practical trajectory for conducting research to grow TSC in the United States.]]></description><pubDate>Tue, 06 Feb 2024 16:52:16 GMT</pubDate><guid>http://pubsindex.trb.org/view/2335055</guid></item><item><title>Homelessness: A Guide for Public Transportation</title><link>http://pubsindex.trb.org/view/2247571</link><description><![CDATA[In recent years, transit agencies have developed programs and initiatives to respond to people experiencing homelessness with a particular attention to people living unsheltered (Loukaitou-Sideris et al. 2020). These transit agencies, including locations from all around the country and varying sizes of cities, such as Atlanta, Austin, Denver, Philadelphia, and San Francisco, created programs that support or provide some aid to people experiencing homelessness while also addressing concerns from their transit agency staff members and housed riders. Other transit agencies are preparing to or wanting to build responses to homelessness (Loukaitou-Sideris et al. 2020). To better understand what transit agencies are doing or considering doing now to respond to homelessness, the Transit Cooperative Research Program (TCRP) commissioned this study to develop a guide for public transportation agencies and concerned stakeholders on approaches and practices that are responsive to those who are experiencing homelessness. By implementing these approaches, public transportation agencies will be able to preserve the quality of their services and facilities, while respecting the rights and mobility needs of people experiencing homelessness, including the need for safe places. This guide presents transit agency experiences and lessons learned as they have built on, newly implemented, or are considering programmatic activities that respond to homelessness. In synthesizing the existing and potential practices, the guide is meant to inform how transit agencies with ongoing programs might further respond to homelessness. The guide should help transit agencies wanting to develop programs move forward.]]></description><pubDate>Sat, 16 Sep 2023 16:34:32 GMT</pubDate><guid>http://pubsindex.trb.org/view/2247571</guid></item><item><title>Communication, Implementation, and Outcomes of Airport Economic Impact Studies</title><link>http://pubsindex.trb.org/view/2236975</link><description><![CDATA[Airport economic impact studies are used as indicators of the growth and sustainability of the aviation industry. The collected data demonstrate the importance of an airport and the economic growth of regional, statewide, and national airports. It can be difficult to effectively leverage an airport’s economic impact study by demonstrating how the airport contributes to economic growth. The objective of this synthesis is to provide information on how airport economic impact studies have been communicated to stakeholders, how the studies have been implemented to achieve objectives, and what the resulting effects were to the agencies and airports included in the studies. Information used in this study was attained through a literature review and surveys of airports, which provided six case examples from airports and state transportation departments found in Chapter 4.]]></description><pubDate>Sat, 02 Sep 2023 16:01:33 GMT</pubDate><guid>http://pubsindex.trb.org/view/2236975</guid></item><item><title>Advancing the Practice of State Aviation System Planning</title><link>http://pubsindex.trb.org/view/2093295</link><description><![CDATA[This report provides stakeholders engaged in the development of a state aviation system plan (SASP) a guide for developing and implementing a thorough and practical SASP. A diverse group of stakeholders, including airport managers and staff, tenants, local community members and leaders, state aviation agency staff, and Federal Aviation Administration (FAA) staff, all have an interest in the local and state airport system. The report includes a variety of supplemental material in appendices, including administrative resources, stakeholder engagement resources, and case studies.]]></description><pubDate>Sun, 08 Jan 2023 18:06:49 GMT</pubDate><guid>http://pubsindex.trb.org/view/2093295</guid></item><item><title>COVID-19 and the Motorcycle Taxi Sector in Sub-Saharan African Cities: A Key Stakeholders’ Perspective</title><link>http://pubsindex.trb.org/view/2071985</link><description><![CDATA[This article assesses the impact of the COVID-19 outbreak on the urban motorcycle taxi (MCT) sector in Sub-Saharan Africa (SSA). MCT operators in SSA provide essential transport services and have shown ingenuity and an ability to adapt and innovate when responding to different challenges, including health challenges. However, policymakers and regulators often remain somewhat hostile toward the sector. The article discusses the measures and restrictions put in place to reduce the spread of COVID-19 and key stakeholders’ perspectives on these and on the sector’s level of compliance. Primary data were collected in six SSA countries during the last quarter of 2020. Between 10 and 15 qualitative interviews with key stakeholders relevant to the urban MCT sector were conducted in each country. These interviews were conducted with stakeholders based in the capital city and a secondary city, to ensure a geographically broader understanding of the measures, restrictions, and perspectives. The impact of COVID-19 measures on the MCT and motor-tricycle taxi sector was significant and overwhelmingly negative. Lockdowns, restrictions on the maximum number of passengers allowed to be carried at once, and more generally, a COVID-19-induced reduction in demand, resulted in a drop in income for operators, according to the key stakeholders. However, some key stakeholders indicated an increase in MCT activity and income because of the motorcycles’ ability to bypass police and army controls. In most study countries measures were formulated in a non-consultative manner. This, we argue, is symptomatic of governments’ unwillingness to seriously engage with the sector.]]></description><pubDate>Wed, 30 Nov 2022 16:57:28 GMT</pubDate><guid>http://pubsindex.trb.org/view/2071985</guid></item><item><title>Usability of Physical Internet Characteristics for Achieving More Sustainable Urban Freight Logistics: Barriers and Opportunities Revealed by Dominant Stakeholder Perspectives</title><link>http://pubsindex.trb.org/view/1998798</link><description><![CDATA[Urban freight logistics currently have to deal with multiple unsustainable conditions. Physical Internet (PI) characteristics show promise in making urban freight logistics more sustainable. This paper explores the opportunities and barriers to implementing this concept. Q-methodology is a method used to reveal different stakeholder perspectives. The results of the Q-methodology show four different perspectives out of which three display a positive attitude toward PI characteristics. One perspective is more moderate and states that a lot is possible already without any changes. One of the barriers is that there is no urgency to change. Further, most perspectives have a positive attitude toward regulations as long as they are nationally coordinated. Based on these results, policy recommendations are developed for individual and collaborative actions for stakeholders.]]></description><pubDate>Mon, 25 Jul 2022 17:32:35 GMT</pubDate><guid>http://pubsindex.trb.org/view/1998798</guid></item><item><title>Performance Dashboard Tool to Visualize Adaptive Resilience Maturity of Transportation Agencies</title><link>http://pubsindex.trb.org/view/1976383</link><description><![CDATA[Incorporating adaptive resilience as a core value of transportation systems will equip transportation agencies to better address the increasing pace of future changes—both in climate and transportation system performance demands. Quantifiable measures are instrumental in incorporating adaptive resilience in agency organizational frameworks. This paper presents a dashboard tool that evaluates the maturity of adaptive resilience capabilities of a transportation agency, using an Adaptive Resilience (AR) Capability Maturity Model. A demonstrative example is presented to show the potential application of the dashboard tool and its implications for transportation system resilience planning. The example shows how the tool can facilitate identification of adaptive resilience capabilities that are at low maturity and thus may need prioritization for future resilience investments, and capabilities that are at a high maturity level and thus can be leveraged to enhance the lower-level capabilities. The AR performance dashboard tool may be used by transportation agencies to communicate their adaptive resilience efforts and maturity to stakeholders. It can also be used by practitioners to streamline and prioritize process improvements in adaptive resilience efforts.]]></description><pubDate>Mon, 06 Jun 2022 16:54:38 GMT</pubDate><guid>http://pubsindex.trb.org/view/1976383</guid></item></channel></rss>