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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>Transport Research International Documentation (TRID)</title>
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      <title>Cross-regional cooperative multiple-timescale joint traffic control, signal control, and routing for maximum network throughput</title>
      <link>https://trid.trb.org/View/2709662</link>
      <description><![CDATA[Network-level signal control and routing were independently optimized using centralized algorithms that rely on traffic data from the entire network. These methods cannot guarantee provable network performance under joint control and real-time controller updates. Additionally, they were not integrated with traffic control, which may result in low network performance due to oversaturation. This study proposes single-timescale and dual-timescale joint traffic control, signal control, and routing based on cross-regional cooperation for urban networks of varying scales and communication delays. Urban networks are divided into regions based on road structure and regional functions to narrow down the traffic data required for network-level joint control. Traffic control is implemented collaboratively at entry nodes and inter-regional connection nodes with different timescales to balance the traffic at inter-regional connection nodes via demand allocation and to avoid regional oversaturation by limiting inter-regional traffic transmission rates. Real-time signal control and routing are implemented at intersections to optimize traffic priority and route vehicles efficiently. Both joint control algorithms are fully decomposable and distributed. Using Lyapunov drift functions, this study proves that both the single-timescale and dual-timescale joint control algorithms maximize network throughput, although the latter results in higher average delays. Comparative simulations on a grid-like network and a network with non-uniform link density show that the joint control algorithms improve network throughput by up to 19.3% compared to existing algorithms.]]></description>
      <pubDate>Wed, 12 Aug 2026 15:14:52 GMT</pubDate>
      <guid>https://trid.trb.org/View/2709662</guid>
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      <title>Collaborative Distribution Solutions in Last Mile Logistics</title>
      <link>https://trid.trb.org/View/2407210</link>
      <description><![CDATA[A steadily growing e-commerce generates an increasing number of parcels to be delivered in cities. Hence, collaborative last mile solutions applicable for parcel delivery providers, such as the collaborative use of parcel lockers, the collaborative use of space, which is specifically dedicated for freight purposes in inner city areas and white label delivery play an increasing role to alleviate inefficiencies and externalities associated with last mile deliveries. Especially, the integration of micro depots to the urban freight delivery process provides a collaborative environment that supports cities and delivery companies in taking together a step forward toward environmentally friendlier urban logistics, since this enables the use of electrically assisted delivery vehicles (e-vehicles), such as e-cargo bikes and delivery vans on the very last mile. However, there is still limited research on collaborative distribution strategies in last mile logistics. Thus, the paper aims to investigate the extent to which parcel delivery providers generate collaborative approaches and to what extent such approaches should be promoted by the local authorities. Therefore, this paper comprises a comprehensive literature review about the latest research on collaborative approaches in last mile logistics. The findings from the reviewed research contributions indicate that there is a lack of qualitative research approaches that put the individual experiences, opinions and perceptions of relevant actors in focus of investigation. The findings from expert interviews enrich the findings from the literature review and depict new insights on the willingness for collaborative arrangements among delivery companies and local authorities.]]></description>
      <pubDate>Mon, 23 Dec 2024 10:40:41 GMT</pubDate>
      <guid>https://trid.trb.org/View/2407210</guid>
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    <item>
      <title>Identifying Military Resources and Strategies to Improve Civilian Airport Resiliency</title>
      <link>https://trid.trb.org/View/2319931</link>
      <description><![CDATA[Extreme weather, natural disasters, and wildfire events have brought into focus the vulnerability of U.S. critical infrastructure systems, which include airports. To enhance critical infrastructure, airport professionals need to explore different approaches to plan for and invest in resilience. The U.S. military has established resilience practices for domestic installations, and a number of different military organizations, such as the Air National Guard (ANG), are co-located at civilian airports. This situation provides opportunities for airports to learn from military resilience practices. The objective of this synthesis was to document resiliency practices and processes from the National Guard and other military services that airports can adapt and leverage for their own facilities and in partnerships with co-located military facilities. This synthesis explores three themes: (1) definitions of resilience and resilience terms; (2) people, processes, and technology resources; and (3) military and civilian standards. Information used in this study was obtained through a literature review and interviews with military staff responsible for acquisitions, resilience, and facility investments and with applicable government program offices responsible for resilience planning and funding. In Chapter 5, case examples from two Army Joint-Use Military Airfields, an Air Force Joint-Use Military Airfield, and a Joint Base explore resilience processes that civilian airports may adapt to their own facilities. For individuals reading the synthesis who do not work at a joint-use airport, Appendix A provides an example joint-use agreement.]]></description>
      <pubDate>Tue, 09 Jan 2024 09:06:53 GMT</pubDate>
      <guid>https://trid.trb.org/View/2319931</guid>
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    <item>
      <title>Proceedings of the Fourth National Joint Use Conference</title>
      <link>https://trid.trb.org/View/1766051</link>
      <description><![CDATA[The Fourth National Joint Use Conference was held in Cleveland, Ohio, on April 14-15, 1997, at the Holiday Inn Lakeside Hotel. The objective of the conference was to focus attention on highway/utility joint use issues. Speakers representing power, cable television, and telephone were invited to participate on the program. The record of their remarks is contained within these proceedings of the conference. About 200 professionals attended the conference. In addition to the technical sessions, workshops were conducted on pertinent highway/utility joint use topics. These workshops provided an opportunity for the conference participants to discuss in detail issues raised in the technical sessions or of particular concern. The enthusiasm, foresight, dedication, and competence of the conference coordinator; the conference staff members; and those people who participated on the program, on the planning committee, and/or in the conference were instrumental in making the Fourth National Joint Use Conference a success.]]></description>
      <pubDate>Sun, 11 Apr 2021 16:36:09 GMT</pubDate>
      <guid>https://trid.trb.org/View/1766051</guid>
    </item>
    <item>
      <title>Tram-train : making new connections</title>
      <link>https://trid.trb.org/View/1682411</link>
      <description><![CDATA[Philippe Bernard and Derek Small from SYSTRA, and Stephen Ware from TSP Projects, a SYSTRA company, examine the benefits of tram-train with case studies from France and the UK.]]></description>
      <pubDate>Tue, 04 Feb 2020 11:43:28 GMT</pubDate>
      <guid>https://trid.trb.org/View/1682411</guid>
    </item>
    <item>
      <title>"Moving up" at Gunderson (and Desplaines and Laramie too!)</title>
      <link>https://trid.trb.org/View/1656468</link>
      <description><![CDATA[]]></description>
      <pubDate>Thu, 03 Oct 2019 16:29:55 GMT</pubDate>
      <guid>https://trid.trb.org/View/1656468</guid>
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    <item>
      <title>UK tram-train : learning lessons</title>
      <link>https://trid.trb.org/View/1589826</link>
      <description><![CDATA[With public service now underway, Tim Kendell and Ian Ambrose relate some of the challenges to delivering the UK's tram-train pilot--and the lessons that can be shared across the industry.]]></description>
      <pubDate>Fri, 01 Mar 2019 14:19:47 GMT</pubDate>
      <guid>https://trid.trb.org/View/1589826</guid>
    </item>
    <item>
      <title>Creating a tram-train 'standard'</title>
      <link>https://trid.trb.org/View/1586389</link>
      <description><![CDATA[Could a homogenised approach to tram-train bring down costs? Germany's VDV is hoping to achieve just that. TAUT talks to Andreas Heitland from engineering consultancy PROSE, which is working with VDV and lead partners VBK and AVG on the project.]]></description>
      <pubDate>Tue, 19 Feb 2019 15:59:02 GMT</pubDate>
      <guid>https://trid.trb.org/View/1586389</guid>
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    <item>
      <title>Colorado's Joint Line</title>
      <link>https://trid.trb.org/View/1585322</link>
      <description><![CDATA[]]></description>
      <pubDate>Tue, 19 Feb 2019 14:51:50 GMT</pubDate>
      <guid>https://trid.trb.org/View/1585322</guid>
    </item>
    <item>
      <title>UK tram-train opens for service</title>
      <link>https://trid.trb.org/View/1584871</link>
      <description><![CDATA[Neil Pulling reviews the mixed fortunes from the first day of passenger operation.]]></description>
      <pubDate>Tue, 19 Feb 2019 12:10:16 GMT</pubDate>
      <guid>https://trid.trb.org/View/1584871</guid>
    </item>
    <item>
      <title>Review and Evaluation of Track Designs for Joint High-Speed Rail and Heavy Freight Operations</title>
      <link>https://trid.trb.org/View/1539911</link>
      <description><![CDATA[An increasing number of railway track segments in the U. S. will soon be required to carry both high-speed passenger and heavy freight traffic. In some cases, conventional track structures (i.e., ballasted crosstie tracks) may not be adequate for both types of service. They may not be capable of retaining the tight tolerances required for higher speed passenger service and withstand heavy freight axle loads without incurring excessive rates of track degradation. In order to address the needs of both types of rail traffic, an alternative track structure may be necessary to ensure adequate stability and reliability. However, any alternative design should be affordable in initial construction costs, allow greatly reduced maintenance requirements, and be maintainable within a realistic budget. There are a number of alternative track designs with potential for joint high-speed and heavy freight operations. This report summarizes the review and evaluation of alternative designs developed and used in a number of countries, and the selection of several track forms to be further evaluated by actual field-testing. The review is focused on the main design features and characteristics of each track form and its performance results from testing and modeling. The evaluation of each track form is carried out based on factors including: potential for providing stability with both types of traffic, initial construction costs and ease of construction, reduced maintenance, ease of maintenance, durability and component life, and track availability.]]></description>
      <pubDate>Thu, 27 Sep 2018 15:12:57 GMT</pubDate>
      <guid>https://trid.trb.org/View/1539911</guid>
    </item>
    <item>
      <title>Not on your track : tourist lines running on freight railroads face unique challenges</title>
      <link>https://trid.trb.org/View/1522474</link>
      <description><![CDATA[]]></description>
      <pubDate>Thu, 05 Jul 2018 12:25:05 GMT</pubDate>
      <guid>https://trid.trb.org/View/1522474</guid>
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    <item>
      <title>From short line to short cut : Louisville &amp; Indiana takes on a new role with CSX</title>
      <link>https://trid.trb.org/View/1479656</link>
      <description><![CDATA[]]></description>
      <pubDate>Wed, 09 Aug 2017 10:55:39 GMT</pubDate>
      <guid>https://trid.trb.org/View/1479656</guid>
    </item>
    <item>
      <title>Tram-trains to Rotherham edge ever closer...</title>
      <link>https://trid.trb.org/View/1469327</link>
      <description><![CDATA[As arguably the nation's most high-profile light rail project, the UK's tram-train pilot has been a long time coming. TAUT caught up with the project team to review progress.]]></description>
      <pubDate>Thu, 01 Jun 2017 10:30:59 GMT</pubDate>
      <guid>https://trid.trb.org/View/1469327</guid>
    </item>
    <item>
      <title>Swift Rail and growing cities</title>
      <link>https://trid.trb.org/View/1396704</link>
      <description><![CDATA[The UK could learn from Germany and its own experience in London's Docklands when it comes to rail transport links, argue Nicholas Falk and Reg Harman.]]></description>
      <pubDate>Mon, 01 Feb 2016 11:38:48 GMT</pubDate>
      <guid>https://trid.trb.org/View/1396704</guid>
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