<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
  <channel>
    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
    <description></description>
    <language>en-us</language>
    <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>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
    </image>
    <item>
      <title>Development of an urban typology framework for supporting sustainable freight planning: A case of Japanese municipalities</title>
      <link>https://trid.trb.org/View/2775534</link>
      <description><![CDATA[As the logistics environment changes dramatically in cities around the world, various freight-related issues have emerged. To address these issues, responses from the public sector are becoming increasingly important, especially at the local government level. However, knowledge and experience in urban freight/city logistics have not been sufficiently accumulated at the local level, making it challenging to address local freight-related problems. In this paper, we present an urban freight typology based on data from 688 local government units across seven metropolitan areas in Japan. Unlike previous typology studies that primarily rely on fine spatial units and estimated freight demand indicators, the proposed framework adopts a municipality-level perspective and incorporates observed freight demand data alongside socio-economic, land-use, and transport system characteristics. Using factor analysis and an agglomerative clustering approach, we identify seven urban freight factors and nine clusters. The results confirm that each cluster effectively captures freight characteristics specific to local governments. Furthermore, to demonstrate the practicability of the proposed typology, we analyze the relationship between clusters and vehicle stop frequencies, and, using the case of the Kanto metropolitan area, identify clusters preferred for locating extremely large logistics facilities. Statistical validation showed that the typology explains substantial variation in vehicle stop density and the spatial distribution of large-scale logistics facilities, supporting its usefulness for freight planning and policy analysis.]]></description>
      <pubDate>Wed, 23 Sep 2026 15:57:30 GMT</pubDate>
      <guid>https://trid.trb.org/View/2775534</guid>
    </item>
    <item>
      <title>Electric Vehicle Charging Infrastructure and Urban Mobility Performance: Evidence from a Tier-II City in India</title>
      <link>https://trid.trb.org/View/2698307</link>
      <description><![CDATA[This study examines how electric vehicle (EV) charging infrastructure influences urban mobility performance in a Tier-II city, using Nizamabad in India as a case study. A structured survey was carried out with EV users—including two-wheeler riders and three-wheeler operators—to explore charging behaviour, accessibility to charging facilities, and the effects on daily travel patterns. The results show that limited charging availability, uneven station distribution, and long waiting times often disrupt trip continuity and reduce operational efficiency. These issues are especially pronounced among commercial operators, who depend on frequent charging to maintain daily service cycles. For them, infrastructure gaps directly affect service reliability and last-mile connectivity. In contrast, users with home charging facilities face far fewer disruptions, pointing to uneven impacts across different user groups. The findings indicate that charging infrastructure functions as a fundamental element of the urban transport system rather than an auxiliary service. A more deliberate alignment of charging stations with activity hubs and transport nodes would improve accessibility and support more stable mobility patterns. These observations underline the importance of coordinated infrastructure planning in facilitating the ongoing transition to electric mobility in emerging urban contexts.]]></description>
      <pubDate>Fri, 28 Aug 2026 08:35:08 GMT</pubDate>
      <guid>https://trid.trb.org/View/2698307</guid>
    </item>
    <item>
      <title>Advancing active mobility in African towns − An AHP-based approach to active mobility planning in Namibia</title>
      <link>https://trid.trb.org/View/2692400</link>
      <description><![CDATA[Active mobility (walking and cycling) remains the dominant mode of travel in small- and medium-sized towns across Sub-Saharan Africa, yet the supporting infrastructure is often inadequate. This study applies the Analytic Hierarchy Process (AHP) to systematically prioritise active mobility infrastructure improvements in four Namibian towns: Rundu, Tsumeb, Walvis Bay, and Keetmanshoop. Through pairwise comparisons, local urban transport and planning experts evaluated fourteen key indicators related to crosswalks, sidewalks, and bikeways, focusing on safety, accessibility, and continuity. The results reveal clear and context-specific priorities. Across all towns (particularly in Rundu and Walvis Bay), the highest weights were assigned to improving the safety and comfort of sidewalks, followed by ensuring accessible crosswalks for pedestrians and persons with disabilities and providing basic crossing facilities. Walvis Bay prioritised visibility and maintenance of existing crossings, reflecting its more developed infrastructure. Bikeway indicators received comparatively lower weights but gained prominence in Tsumeb and Keetmanshoop, highlighting emerging attention to cycling. Standard deviations were generally low, indicating strong expert consensus. The findings demonstrate that AHP is a useful decision-support tool for identifying locally relevant and high-impact priorities in data-sparse contexts. They further highlight the need for tailored and phased interventions, focussing on basic infrastructure provision in some towns and maintenance and enforcement in others, to create safer, more inclusive active mobility networks. These insights provide a structured evidence base to guide policy and investment decisions in Namibian and African towns with similar urban mobility challenges.]]></description>
      <pubDate>Mon, 10 Aug 2026 16:51:31 GMT</pubDate>
      <guid>https://trid.trb.org/View/2692400</guid>
    </item>
    <item>
      <title>Rationale for the Construction of Bypasses in Settlements Using the Hierarchical Analysis Method</title>
      <link>https://trid.trb.org/View/2579407</link>
      <description><![CDATA[The article provides a theoretical rationale for the construction of bypasses in settlements using the hierarchical analysis method. The hierarchical analysis method is a systematic procedure for hierarchically presenting elements that define the essence of the problem. The method is based on decomposing the problem into simpler components and further processing judgments at each hierarchical level of pairwise comparisons. As a result, we obtain the relative degree (intensity) of interaction of elements at the given hierarchical level or the “importance” (preference) of some elements relative to others. These judgments are given a numerical assessment. Statistical characteristics (mathematical estimation, dispersion of parameters of traffic flows, density and distribution function of movement time intervals, etc.) are widely used for assessing the state of traffic flow in justifying bypasses in settlements. The fundamental commonly used characteristics of the state of traffic flow in justifying bypasses in settlements are the density distribution function of movement time intervals of vehicles in the flow.]]></description>
      <pubDate>Mon, 27 Jul 2026 11:16:41 GMT</pubDate>
      <guid>https://trid.trb.org/View/2579407</guid>
    </item>
    <item>
      <title>Neighborhood environment associations with children's active transportation and location-specific physical activity in small town and rural Midwestern settings</title>
      <link>https://trid.trb.org/View/2709596</link>
      <description><![CDATA[This study examined associations of neighborhood and community environment features with detailed device-based measures of children's physical activity in rural and small town settings. Participants were 44 elementary-aged children (mean age 8.8 ± 0.8 years; 61.4% female) from rural and small town (<20K residents) Midwest communities. Accelerometers and GPS trackers measured types/locations of activity (walking, biking, and vehicle trips; home, neighborhood, and school), overall MVPA, and sedentary time. All neighborhood and community environment measures were collected at the participant level. Objective measures included walkability, distance to school, and living within town (yes/no). Perceived measures captured perceptions of indoor/outdoor play areas and areas near home, schools, and churches. Mixed effects models assessed associations of each environmental factor with each activity type/location and with overall MVPA and sedentary time. Walking time, school-MVPA, and other-MVPA were positively associated with children's overall-MVPA, while home-MVPA was negatively associated with sedentary time. Environmental features were positively associated with overall-MVPA (walkability, areas around home), biking (outdoor areas, areas around home), and home-MVPA (walkability, living within town, areas around home), and negatively associated with sedentary time (living within town, areas around home) and vehicle time (walkability, distance to school, living within town, perceived environment). No features were related to walking, neighborhood-MVPA, school-MVPA, or other-MVPA. Neighborhood walkability and areas around the home appear important to rural children's physical activity, though the findings for home MVPA suggest these features may relate to different sources of physical activity in rural populations than what has been shown in urban populations.]]></description>
      <pubDate>Fri, 26 Jun 2026 13:59:51 GMT</pubDate>
      <guid>https://trid.trb.org/View/2709596</guid>
    </item>
    <item>
      <title>Data for Autonomous Transportation Awareness: Data Exchange Use Cases, Standards, and Barriers</title>
      <link>https://trid.trb.org/View/2714193</link>
      <description><![CDATA[This report examines the critical data exchanges between automated vehicle (AV) service providers and the cities and municipalities they serve. It assists municipal authorities in navigating the often complex and real-time digital data exchanges needed to support AV mobility services, with emphasis in three areas: (1) critical safety data for broad-area situational awareness of hazards typically associated emergency dispatch or roadway work zones; (2) performance metrics of AV services that inform the quantity, quality, spatial extents, and impact on the roadway network; and (3) regulatory and policy information, particularly dynamic information that governs how AV services interact with the roadway network, with emphasis on curb space. The report reviews existing practices and emerging protocols and standards and identifies key gaps to address moving forward.]]></description>
      <pubDate>Mon, 22 Jun 2026 07:23:35 GMT</pubDate>
      <guid>https://trid.trb.org/View/2714193</guid>
    </item>
    <item>
      <title>Analysis of Road Vulnerability in Traditional Villages under Fire Scenarios Based on Multi-layer Network Framework</title>
      <link>https://trid.trb.org/View/2712923</link>
      <description><![CDATA[Fires in wooden building cluster within traditional villages and towns frequently cause road blockages, significantly hindering evacuation and rescue operations. However, most existing research examines buildings or road networks independently, neglecting the critical coupling effects within the integrated “building cluster fire–road system”. To address this gap, this study proposes a vulnerability analysis method for road networks based on coupled multi-layer networks. A “building cluster fire–road system” dual-layer network is constructed to quantify geospatial coupling relationships. Cascading failures are simulated by applying heat radiation thresholds to define road failure, and the resulting impacts are evaluated using a road accessibility-based vulnerability model. Cascading failure modes are classified according to the importance of building nodes, the number of failed road segments, and the spatial proximity index between buildings and roads, enabling identification of the primary drivers of vulnerability. A case study in Tongle Village, Yunnan Province, China, demonstrates that 64.10% of building fire scenarios reduce road accessibility, with regional cascading failure emerging as the predominant high-vulnerability mode. Notably, building fire scenarios with high vulnerability (vulnerability index > 20%) increase evacuation distances by more than 20%. The topological importance of failed roads, measured by edge betweenness centrality, is identified as the principal factor triggering road network vulnerability under cascading failures. These results provide a theoretical basis for enhancing disaster resilience in traditional villages and towns. Furthermore, the proposed multi-layer network framework is adaptable for cascading failure risk analyses in other multi-layer infrastructure systems.]]></description>
      <pubDate>Thu, 18 Jun 2026 17:03:15 GMT</pubDate>
      <guid>https://trid.trb.org/View/2712923</guid>
    </item>
    <item>
      <title>Establishing Safety-Based Minimal Pavement Performance Thresholds to Support Municipal Infrastructure Asset Management</title>
      <link>https://trid.trb.org/View/2672612</link>
      <description><![CDATA[Road asset management agencies, including transportation units in a municipal setting, must ensure that the roads are safe for the public. To do so, one must translate this safety requirement to a set of minimum pavement condition thresholds. Roads that fall below these thresholds should be regarded as failed and must be immediately repaired. So far, determining safety-based thresholds has primarily relied on extensive accident data analysis, which presents challenges for municipal infrastructure agencies lacking such data. To bridge this gap, the study proposes a practical method for determining safety-significant pavement performance thresholds. These thresholds consider road class owing to different design speeds. It begins by identifying safety-sensitive distresses and then reviews their critical thresholds at different speeds. The proposed method is illustrated using the City of Calgary’s pavement assessment practices. Results indicate that low-speed roads should prioritize addressing potholes and rutting, while high-speed roads should focus on mitigating roughness-related safety risks. Additionally, there is no one-to-one relationship between the overall pavement performance index and individual distress, and the overall performance thresholds established in this study should be considered conservative. The findings provide valuable references and insights for municipal road asset management, and the proposed approach can be applicable to other municipalities and provincial transportation agencies or state departments of transportation.]]></description>
      <pubDate>Tue, 26 May 2026 11:56:22 GMT</pubDate>
      <guid>https://trid.trb.org/View/2672612</guid>
    </item>
    <item>
      <title>California Approach to Speed Limits and Enforcement: Legislative Reforms and Their Impacts</title>
      <link>https://trid.trb.org/View/2569596</link>
      <description><![CDATA[The methodology for establishing speed limits is often dictated by state or national law. In the case of the state of California, USA, the state legislature establishes the procedure municipalities must use to set speed limits on most roadways. This paper explains how a change in the law in 2010 made it more difficult to set lower speed limits and the subsequent successful effort to change the law to remove the nexus to 85th percentile speeds that went into effect in 2023.]]></description>
      <pubDate>Tue, 19 May 2026 15:12:32 GMT</pubDate>
      <guid>https://trid.trb.org/View/2569596</guid>
    </item>
    <item>
      <title>20MPH Urban/Village Limits – The Journey From Local Intervention to National Norm</title>
      <link>https://trid.trb.org/View/2569565</link>
      <description><![CDATA[The “20’s Plenty for US” movement in the UK has grown from an inspirational idea from another country to a successful organization empowering thousands of voluntary campaigners to create better public spaces by adopting 20mph or 30km/h as an urban/village default speed limit.]]></description>
      <pubDate>Tue, 19 May 2026 15:12:32 GMT</pubDate>
      <guid>https://trid.trb.org/View/2569565</guid>
    </item>
    <item>
      <title>Novel Hybrid Model for Addressing Uncertainty of the Road Safety Composite Indicator: Integration of Dea and Weighted Gra</title>
      <link>https://trid.trb.org/View/2686206</link>
      <description><![CDATA[Creating a composite indicator is a popular concept in evaluating and comparing road safety of territories. While many other approaches are used, most current interest is on Data Envelopment Analysis (DEA) for measuring the relative performance in efficiency terms. Usefulness of DEA, which measure performance in efficiency terms, has already been proven. However, the indicators commonly used to construct a road safety composite index are not always precise and accurate (particularly safety performance indicators), and the results obtained from this type of data does not seem to be solid. So, the main aim of this paper is to represent the novel methodology to effectively evaluate the state of road safety and create a reliable composite index of the selected entities when imprecise data are involved and, to produce reliable composite index under uncertain environment. DEA, the weighting method Fan–Ma, and the Grey Relational Analysis (GRA) were integrated into hybrid methodology to obtain a more realistic and relevant picture of road safety. Applying this hybrid methodology, peculiarity of DEA is retained, scores are further differentiated, and entities are ranked and classified according to the road safety level. A case study was conducted to evaluate and rank municipalities, determine road safety classes and benchmark the territories under study. Results were verified indicating the robustness and effectiveness of the proposed methodology and its superiority to basic DEA as regards the territory ranking.]]></description>
      <pubDate>Wed, 13 May 2026 17:01:18 GMT</pubDate>
      <guid>https://trid.trb.org/View/2686206</guid>
    </item>
    <item>
      <title>Counterproductive development: New towns may produce and attract more long-distance commuting</title>
      <link>https://trid.trb.org/View/2592342</link>
      <description><![CDATA[Aggregate studies on commuting behavior have primarily focused on trips produced from an area while overlooking those attracted to the area, leading to a partial understanding of commuting patterns. Using mobile phone signaling data from Dalian and Shenyang, China, this study illustrates the spatial distributions of produced and attracted commuting distances and examines their nonlinear associations with built environment characteristics, using an XGBoost model. Results show strong positive correlations between produced and attracted commuting. Distance to business center is the most important predictor. As this distance grows, both produced and attracted commuting distances increase. Its association with attracted commuting distance differs from that in developed countries. Notably, some suburban new towns—intended to reduce commuting through simultaneous population and employment decentralization—have evolved into sparsely populated “job islands,” intensifying long-distance commuting instead. Therefore, phased development and more integrated residential and employment decentralization are conducive to mitigating long-distance commutes.]]></description>
      <pubDate>Wed, 24 Sep 2025 15:31:08 GMT</pubDate>
      <guid>https://trid.trb.org/View/2592342</guid>
    </item>
    <item>
      <title>Unveiling the hidden effects of multilevel administrative boundaries on human mobility</title>
      <link>https://trid.trb.org/View/2567228</link>
      <description><![CDATA[Multilevel administrative boundaries create various forms of political and institutional influences on human mobility. However, quantitative evidence for these influences are absent. The authors examine this using mobile phone data of 107.48 billion trips across 2844 administrative units in China, a typical case experiencing significant transitions in administrative system. An extended gravity model, incorporating these boundaries, achieved 92.75 % precision and 0.23 improvement in adjusted R-squared over the classic model. Results show second-level (municipal) administrative boundaries impact mobility 3.86 times more than first-level (provincial) administrative boundaries on average. Municipal boundaries exert stronger effects in developed areas, while provincial boundaries show relatively balanced effects across regions. Municipal boundaries are linked to fiscal revenue decentralization, while provincial boundaries relate more to fiscal expenditure. Administrative boundaries influence social differentiation in mobility, with a stronger effect on females and younger populations. These findings contribute to the development of more accurate transportation models and reasonable mobility-management policies.]]></description>
      <pubDate>Thu, 10 Jul 2025 16:40:04 GMT</pubDate>
      <guid>https://trid.trb.org/View/2567228</guid>
    </item>
    <item>
      <title>A Median Study in Pleasanton, Texas</title>
      <link>https://trid.trb.org/View/2543305</link>
      <description><![CDATA[In September, 1958, a committee composed of members of the Texas Highway Department and the Texas Municipal League was formed to investigate and make recommendations on city-state median practices. It was the intent of this committee to develop information on the effect that the addition of the median would have on a facility's ability to handle traffic more efficiently and safely and the effect that it would have on the local businesses. This information could then be used as a basis for evaluating future potential median sites to determine if a median·type facility should be installed. The Texas Transportation Institute, as the official research agency of the Texas Highway Department, was asked to conduct the actual research program for the Committee. Three study sites, involving a heavily traveled route in a large city (San Antonio), a moderately traveled route in a medium sized city (Baytown), and a lightly traveled route in a small town (Pleasanton), were selected for the analysis. Because of the variations in the conditions under observation, findings of these three studies are being released as separate reports. This report concerns the median study in Pleasanton, Texas. However, a statement of general conclusions concerning all three areas is included in each of the reports. For more detailed information, the other reports should be obtained.]]></description>
      <pubDate>Mon, 12 May 2025 16:00:16 GMT</pubDate>
      <guid>https://trid.trb.org/View/2543305</guid>
    </item>
    <item>
      <title>Relationship Between the Influence Area of High-Speed Railway Stations and the Casual Effect of these Stations on the Population Change of Municipalities Alone the Railway Line in Japan</title>
      <link>https://trid.trb.org/View/2407470</link>
      <description><![CDATA[The high-speed railway station has a wider influence area than the commuter railway station and is believed to impact the municipalities around it significantly. The municipalities where high-speed railway stations will be constructed might be affected similarly. It is still unclear how the size of the station`s influence area affects the population of municipalities. The authors examine a method using a propensity score to show the effect of high-speed railway development quantitatively. Thus, they can statistically infer the causal effect of high-speed railway development while considering the influence of commuter railway lines and highways. The authors matched 1126 municipalities all over Japan using propensity scores and quantitatively analyzed the effect of opening Shinkansen stations using Difference-in-Differences analysis. As a result, the authors find that the Shinkansen station generally positively affects population changes.]]></description>
      <pubDate>Sat, 08 Mar 2025 18:01:21 GMT</pubDate>
      <guid>https://trid.trb.org/View/2407470</guid>
    </item>
  </channel>
</rss>