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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. 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>
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      <title>Addressing Travel Needs of Women and Families on Public Transportation</title>
      <link>https://trid.trb.org/View/2712232</link>
      <description><![CDATA[Many women’s travel experiences relate directly to their disproportionate share of caregiving responsibilities. Travelers supervising dependents are more likely to need access to multiple destinations and may have more belongings in tow. Because dependents are unlikely to be commuting adults, travel during off-peak hours is more common, and paying multiple fares can increase the financial burden. Additionally, safety is a greater concern for women, both when they are traveling alone and when they are traveling with dependents, especially children. TCRP Research Report 265, produced by the Transportation Research Board's (TRB’s) Transit Cooperative Research Program, presents a set of practical tools to help transit agencies better understand their riders, use existing data more effectively, assess how well they are serving women and families, build internal support for these efforts, and identify service planning, vehicle, and station design strategies that benefit women and families. The eight tools are organized into three stages: Understand Your Riders, Build Internal Capacity, and Deploy Your Tactics.]]></description>
      <pubDate>Tue, 09 Jun 2026 10:56:02 GMT</pubDate>
      <guid>https://trid.trb.org/View/2712232</guid>
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      <title>Transit Capacity and Quality of Service Manual, 4th Edition</title>
      <link>https://trid.trb.org/View/2703934</link>
      <description><![CDATA[The Transit Capacity and Quality of Service Manual (TCQSM) provides transportation practitioners with varying levels of experience and different types of responsibilities with information, techniques, and resources to support the planning, design, and operation of transit services, facilities, and systems. The manual provides updated, consistent, research-based concepts, data, methods, and guidance for estimating, measuring, and assessing transit quality of service, capacity, and operational performance. The TCQSM 4th Edition consists of eleven chapters, divided into three main topic areas: (a) concepts, (b) methods, and (c) resource material.]]></description>
      <pubDate>Sat, 23 May 2026 18:35:18 GMT</pubDate>
      <guid>https://trid.trb.org/View/2703934</guid>
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      <title>Air Quality Inside Buses</title>
      <link>https://trid.trb.org/View/2676946</link>
      <description><![CDATA[In 2024, transit buses accounted for approximately 50.4% of total public transportation ridership in the United States, serving more than 3.86 billion riders. In-bus environmental quality plays a critical role in the health and safety of operators and passengers, as well as in overall system performance. Even on short trips, poor indoor air quality can cause discomfort and symptoms such as drowsiness, dizziness, nausea, and fatigue. TCRP Research Report 261: Air Quality Inside Buses presents research findings and practical approaches to air management in transit buses to help maintain a comfortable and safe environment for operators and passengers under normal and emergency conditions, including those involving airborne infectious diseases. The report also provides a comprehensive review of existing studies and current air management practices, with a focus on system configurations and their performance.]]></description>
      <pubDate>Wed, 04 Mar 2026 08:56:10 GMT</pubDate>
      <guid>https://trid.trb.org/View/2676946</guid>
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    <item>
      <title>Low-Impact Frog Design Primer and Research Roadmap</title>
      <link>https://trid.trb.org/View/2672509</link>
      <description><![CDATA[The frog is a component of special trackwork where one rail crosses another. Openings called flangeways in standard frogs let wheel flanges pass through. When a wheel passes through the flangeway at the frog point, contact between the wheel tread and frog wing rail creates high-impact forces, noise, and vibration. Low-impact frog designs can reduce these effects, but little public data exist on their effectiveness, longevity, or maintainability. This Transit Cooperative Research Program (TCRP) Research Report serves as a guide for transit agencies in selecting appropriate frog designs for noise and vibration mitigation and in maintaining effective noise and vibration performance through proper maintenance practices. It also offers a research roadmap for the rail transit community to focus its efforts to foster, support, monitor, disseminate, and implement research on frog system design.]]></description>
      <pubDate>Thu, 26 Feb 2026 09:15:16 GMT</pubDate>
      <guid>https://trid.trb.org/View/2672509</guid>
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      <title>Public Transportation in Rural Areas and Tribal Communities: Guide for Service Improvements</title>
      <link>https://trid.trb.org/View/2646958</link>
      <description><![CDATA[This report provides a guide to help public transit agencies in rural and tribal communities initiate new or enhance existing public transportation services to improve mobility and accessibility, enhance performance, and consider appropriate innovations. The guide will help transit providers determine the service designs and modes that are most appropriate within their community and support implementation of those services. This guide will be of immediate use to public transportation providers and stakeholders who plan and provide public transportation services in rural areas and tribal communities throughout the United States.]]></description>
      <pubDate>Sat, 10 Jan 2026 11:18:43 GMT</pubDate>
      <guid>https://trid.trb.org/View/2646958</guid>
    </item>
    <item>
      <title>Investigation and Mitigation of Insulated Joint Electrical Failure: A Guide</title>
      <link>https://trid.trb.org/View/2628405</link>
      <description><![CDATA[This report provides information on how to identify arcing at insulated joints (IJs), methods to diagnose the contributing factors, underlying causes, strategies for investigating IJ failures, and examples of how others have mitigated arcing. This guide was developed by conducting a literature review and an industry survey and identifying gaps and needs in the current state of knowledge. The guide’s purpose is to supply electrified railway operators and maintenance personnel with the information they need to operate, maintain, design, and modify their electrical railways.]]></description>
      <pubDate>Tue, 02 Dec 2025 13:46:35 GMT</pubDate>
      <guid>https://trid.trb.org/View/2628405</guid>
    </item>
    <item>
      <title>Public Transit Workforce Development for Zero-Emission Vehicles</title>
      <link>https://trid.trb.org/View/2633297</link>
      <description><![CDATA[This report identifies and is organized around seven areas (referred to as tasks) that each address workforce skills and knowledge needed by transit agency frontline employees to operate (i.e., drive) and maintain zero-emission vehicles (ZEVs) in revenue service, specifically full-size (i.e., 40- to 60-foot) battery electric-buses and fuel-cell buses. The research included a literature review, industry input and feedback, and case studies. While transit agencies may need to focus on certain tasks more than others, each of the seven tasks is important to consider. The report will be of immediate interest to public transportation agencies seeking to build the skills of their frontline workforce to safely and efficiently operate and maintain ZEVs.]]></description>
      <pubDate>Tue, 02 Dec 2025 13:46:35 GMT</pubDate>
      <guid>https://trid.trb.org/View/2633297</guid>
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    <item>
      <title>Determination of Actual Derailment Loads on Transit Bridges</title>
      <link>https://trid.trb.org/View/2614519</link>
      <description><![CDATA[This report provides the transit industry with a reasoned basis for derailment loads on bridges. It also offers methodologies that bridge design engineers can utilize to calculate the horizontal and vertical derailment impact loading. The report was developed by conducting a literature review, researching common derailment scenarios, and conducting numerical simulations of train car derailments on bridges. This report will provide bridge designers with the information they need to determine the derailment loads on transit bridges in the vertical and lateral directions.]]></description>
      <pubDate>Sat, 01 Nov 2025 18:26:25 GMT</pubDate>
      <guid>https://trid.trb.org/View/2614519</guid>
    </item>
    <item>
      <title>Low-Level DC Leakage and Fault Currents in Transit Systems: Developing a Prototype for Detection and Mitigation</title>
      <link>https://trid.trb.org/View/2611022</link>
      <description><![CDATA[This report documents the development of prototype methods, tools, and techniques for detecting and monitoring low-level direct current (DC) leakage and fault currents (i.e., magnitude of current and location of fault) in electrified transit systems powered by third rail. This report supplements TCRP Research Report 211: Guidebook for Detecting and Mitigating Low-Level DC Leakage and Fault Currents in Transit Systems, which culminated in prototypes that could detect low-level faults for overhead contact systems. TCRP Research Report 259 was developed through analyzing the causes of low-level faults, developing a prototype, and testing it under actual transit conditions. This report will be of interest to those responsible for detecting and mitigating low-level DC leakage and fault currents in transit systems.]]></description>
      <pubDate>Sat, 18 Oct 2025 18:52:54 GMT</pubDate>
      <guid>https://trid.trb.org/View/2611022</guid>
    </item>
    <item>
      <title>Resilient Zero-Emission Transit Bus Fleets: A Guide</title>
      <link>https://trid.trb.org/View/2598538</link>
      <description><![CDATA[This report provides a framework for transit agencies to update their resilience plans to operate zero-emission transit bus (ZEB) fleets. It also offers a roadmap for transit agencies to integrate their existing zero-emission vehicle (ZEV) transition strategies into broader resilience planning efforts. The guide was developed through a literature review, the production of case studies, and the identification of gaps in the current state of knowledge. This guide will provide transit operators with the information they need to operate their fleets, maintain service, and minimize disruptions during emergency events.]]></description>
      <pubDate>Sat, 13 Sep 2025 17:46:25 GMT</pubDate>
      <guid>https://trid.trb.org/View/2598538</guid>
    </item>
    <item>
      <title>Mitigation Strategies for Deterring Transit Assaults</title>
      <link>https://trid.trb.org/View/2582444</link>
      <description><![CDATA[This guidebook provides guidance for transit agencies seeking to address and mitigate assaults on passengers and transit workers. Developed through an extensive research effort—including a literature review, national assault data analysis, agency surveys, focus groups, and interviews with six transit agencies—this guidebook equips agencies with practical strategies and evidence-based recommendations to enhance safety and security in the transit environment.]]></description>
      <pubDate>Thu, 31 Jul 2025 15:26:17 GMT</pubDate>
      <guid>https://trid.trb.org/View/2582444</guid>
    </item>
    <item>
      <title>The Future of Commuter Rail in North America</title>
      <link>https://trid.trb.org/View/2554113</link>
      <description><![CDATA[As the COVID‐19 pandemic upended traditional travel markets, speculation swirled about what work‐from‐home patterns would mean for commuter rail agencies, their services, and the funding structure that supported them. For decades, commuter rail providers across North America offered a service that was often faster than driving and cheaper than parking for many downtown office commuters. But in 2020 ridership on all public transportation services hit record lows followed by slow recovery, with most still significantly below their 2019 levels. Remote and hybrid work arrangements have reduced the downtown commuter market, which now represents a lower share of total regional travel. Providers will need to broaden their focus from the downtown commuter market to restore commuter rail’s ridership and relevancy in regional transportation systems.   Evidence indicates that a new travel pattern has emerged in North America’s metropolitan regions. Work‐from‐home among office workers is entrenched, demand for off‐peak and leisure travel has increased, and downtown office buildings are unlikely to attract the same quantity of daily workers that drove their initial investment. Where there remains strong demand for downtown commutes, it is limited to Tuesdays, Wednesdays, and Thursdays, offering a challenging dynamic for capital intensive transportation services. How commuter rail providers justify their investments remains uncertain and will be dependent on local travel markets that vary by time of day and day of week. This report explores these issues, examining how commuter railroads might navigate the market, service, and funding challenges they face in the coming years and decades. The research identifies implementable and practical strategies for commuter rail services in North America to facilitate recovery from the effects of the COVID‐19 pandemic and to transform its role and relevance in regional mobility.]]></description>
      <pubDate>Sun, 18 May 2025 17:55:45 GMT</pubDate>
      <guid>https://trid.trb.org/View/2554113</guid>
    </item>
    <item>
      <title>Transportation Emergency Response Application (TERA): Migration Options Beyond 2025</title>
      <link>https://trid.trb.org/View/2548897</link>
      <description><![CDATA[This report describes options for migrating the Transportation Emergency Response Application's (TERA’s) features, capabilities, and training scenarios into other software applications. The report prioritizes the training scenarios that have the most value as resources for tabletop exercises and that can be used by transportation management professionals in their existing staff emergency training. The report explores potential software enhancements, adaptations, and migration criteria to further extend TERA’s usefulness.]]></description>
      <pubDate>Sat, 03 May 2025 16:36:17 GMT</pubDate>
      <guid>https://trid.trb.org/View/2548897</guid>
    </item>
    <item>
      <title>Tactile Wayfinding in Transportation Settings for Travelers Who Are Blind or Visually Impaired: Volume 1: Conduct of Research</title>
      <link>https://trid.trb.org/View/2526707</link>
      <description><![CDATA[This publication describes the technical specifications for selection, usability, installation, and maintenance of tactile walking surface indicators (TWSIs) in multimodal environments. The report and guide will be of immediate use to state, local, and tribal agencies, including rail, transit, and highway agencies; public works departments; ferries; airports; parks and recreation departments; and other entities seeking to provide wayfinding cues to improve the accessibility of their networks.]]></description>
      <pubDate>Mon, 24 Mar 2025 12:27:03 GMT</pubDate>
      <guid>https://trid.trb.org/View/2526707</guid>
    </item>
    <item>
      <title>Tactile Wayfinding in Transportation Settings for Travelers Who Are Blind or Visually Impaired: Volume 2: Guide</title>
      <link>https://trid.trb.org/View/2526677</link>
      <description><![CDATA[This publication describes the technical specifications for selection, usability, installation, and maintenance of tactile walking surface indicators (TWSIs) in multimodal environments. The report and guide will be of immediate use to state, local, and tribal agencies, including rail, transit, and highway agencies; public works departments; ferries; airports; parks and recreation departments; and other entities seeking to provide wayfinding cues to improve the accessibility of their networks.]]></description>
      <pubDate>Mon, 24 Mar 2025 12:27:03 GMT</pubDate>
      <guid>https://trid.trb.org/View/2526677</guid>
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