Transportation Research Interdisciplinary Perspectives最新文献_第6页

Opportunistic commercial formation flights in continental airspace for greener aviation 在大陆空域进行商业编队飞行，以实现更环保的航空

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2025.101818

Oriol Bracons Escarré , Christian Eduardo Verdonk Gallego , Miquel Angel Piera Eroles

At a time of growing demand in commercial aviation, it is important to establish a trade-off between environmental impact, efficiency, and capacity. This is assessed through the study of Air Streams under a multi-criteria approach that pave the way for the deployment of commercial Formation Flights in continental airspace. This study describes a methodology to design Air Streams that could foster an efficient opportunistic Formation Flights pairing among aircraft. An evaluation of the main traffic flows that make up European airspace is conducted, followed by the design of two Air Streams. An study of potential use and savings is carried out, to evaluate Air Streams and Formation Flights synergy. The results of the heuristics applied show that Air Stream could manage around 10% of the aircraft flying in the airstream nearby area implementing Formation Flights. Significant savings could be achieved by the combination of Air Streams and Formation Flights concepts. The study estimates over 1600 tonnes of Fuel and over 5000 tonnes of CO₂ savings annually, only with the use case scenario evaluated.

在商业航空需求不断增长的时代，在环境影响、效率和容量之间建立平衡是很重要的。这是通过多标准方法下的气流研究来评估的，为在大陆空域部署商业编队飞行铺平了道路。本研究描述了一种设计气流的方法，该方法可以促进飞机之间有效的机会编队飞行配对。对构成欧洲空域的主要交通流进行了评估，然后设计了两种气流。进行了一项潜在用途和节省的研究，以评估气流和编队飞行的协同作用。应用启发式算法的结果表明，采用编队飞行的气流可以管理10%左右的在气流附近区域飞行的飞机。通过结合气流和编队飞行的概念，可以显著节省成本。该研究估计，仅在评估了用例场景后，每年可节省1600多吨燃料和5000多吨二氧化碳。

{"title":"Opportunistic commercial formation flights in continental airspace for greener aviation","authors":"Oriol Bracons Escarré , Christian Eduardo Verdonk Gallego , Miquel Angel Piera Eroles","doi":"10.1016/j.trip.2025.101818","DOIUrl":"10.1016/j.trip.2025.101818","url":null,"abstract":"<div><div>At a time of growing demand in commercial aviation, it is important to establish a trade-off between environmental impact, efficiency, and capacity. This is assessed through the study of Air Streams under a multi-criteria approach that pave the way for the deployment of commercial Formation Flights in continental airspace. This study describes a methodology to design Air Streams that could foster an efficient opportunistic Formation Flights pairing among aircraft. An evaluation of the main traffic flows that make up European airspace is conducted, followed by the design of two Air Streams. An study of potential use and savings is carried out, to evaluate Air Streams and Formation Flights synergy. The results of the heuristics applied show that Air Stream could manage around 10% of the aircraft flying in the airstream nearby area implementing Formation Flights. Significant savings could be achieved by the combination of Air Streams and Formation Flights concepts. The study estimates over 1600 tonnes of Fuel and over 5000 tonnes of CO<sub>2</sub> savings annually, only with the use case scenario evaluated.</div></div>","PeriodicalId":36621,"journal":{"name":"Transportation Research Interdisciplinary Perspectives","volume":"36 ","pages":"Article 101818"},"PeriodicalIF":3.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impacts of the East-West national highway (PNH-01) on settlement patterns and livelihood of Residents: A case study of the Chumey Gewog, Bhutan 东西国道（PNH-01）对居民聚落模式和生计的影响——以不丹Chumey Gewog为例

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2025.101798

Pema Thinley , Christine Steinmetz-Weiss

This is the first study to address impacts on settlement patterns and livelihoods of Chumey Gewog¹ and its people since Bhutan’s Primary National Highway (PNH-01) expansions. Through a series of in-depth interviews, site analysis and land use mapping, the study found that impacts of the PNH-01 varies across Chumey Gewog’s villages depending on geographical location and pre-existing conditions. Findings suggest villagers adopted non-farming economic activities to generate quick monetary returns versus undertaking traditional labour-intensive farming practices historically associated with Chumey resulting in linear settlement patterns and exhibiting signs of unplanned settlement sprawl. The research highlights the importance of implementing location-specific/tailored interventions to maximize benefits of the PNH-01. The study highlights opportunities of the PNH-01 for Bhutanese people and provides future research recommendations for local and national government interventions that can assist in mitigating challenges faced by agricultural communities. Designing a longitudinal research project of the PNH-01 and its settlements could inform government transport and regional planners a means to facilitate equitable development across the Gewog to improve market access and establish transportation networks to support farming communities in remote villages.

这是自不丹主要国家公路（PNH-01）扩建以来，首个针对Chumey Gewog1及其人民的定居模式和生计影响的研究。通过一系列深入访谈、现场分析和土地利用测绘，研究发现PNH-01对Chumey Gewog村庄的影响因地理位置和原有条件而异。研究结果表明，村民采用非农业经济活动来产生快速的货币回报，而不是从事传统的劳动密集型农业实践，这在历史上与Chumey相关，导致线性定居模式，并表现出无计划的定居扩张迹象。该研究强调了实施针对特定地点/量身定制的干预措施以最大化PNH-01益处的重要性。该研究强调了PNH-01为不丹人民带来的机遇，并为地方和国家政府的干预措施提供了未来的研究建议，这些干预措施可以帮助减轻农业社区面临的挑战。设计一个PNH-01及其定居点的纵向研究项目可以为政府交通和区域规划者提供一个促进整个Gewog公平发展的方法，以改善市场准入和建立交通网络，以支持偏远村庄的农业社区。

{"title":"Impacts of the East-West national highway (PNH-01) on settlement patterns and livelihood of Residents: A case study of the Chumey Gewog, Bhutan","authors":"Pema Thinley , Christine Steinmetz-Weiss","doi":"10.1016/j.trip.2025.101798","DOIUrl":"10.1016/j.trip.2025.101798","url":null,"abstract":"<div><div>This is the first study to address impacts on settlement patterns and livelihoods of Chumey <em>Gewog</em><span><span><sup>1</sup></span></span> and its people since Bhutan’s Primary National Highway (PNH-01) expansions. Through a series of in-depth interviews, site analysis and land use mapping, the study found that impacts of the PNH-01 varies across Chumey <em>Gewog’s</em> villages depending on geographical location and pre-existing conditions. Findings suggest villagers adopted non-farming economic activities to generate quick monetary returns versus undertaking traditional labour-intensive farming practices historically associated with Chumey resulting in linear settlement patterns and exhibiting signs of unplanned settlement sprawl. The research highlights the importance of implementing location-specific/tailored interventions to maximize benefits of the PNH-01. The study highlights opportunities of the PNH-01 for Bhutanese people and provides future research recommendations for local and national government interventions that can assist in mitigating challenges faced by agricultural communities. Designing a longitudinal research project of the PNH-01 and its settlements could inform government transport and regional planners a means to facilitate equitable development across the <em>Gewog</em> to improve market access and establish transportation networks to support farming communities in remote villages.</div></div>","PeriodicalId":36621,"journal":{"name":"Transportation Research Interdisciplinary Perspectives","volume":"36 ","pages":"Article 101798"},"PeriodicalIF":3.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analyzing temporal mobility pattern shifts: Dynamic origin–destination estimation from aggregated mobile phone location data 分析时间移动模式的转变：从聚合的移动电话位置数据动态的始发目的地估计

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2025.101806

Alvin Noviansyah, Nobuhiro Uno, Ryoji Matsunaka, Tomoki Nishigaki

Understanding the dynamic shifts in population distribution is crucial for comprehending spatiotemporal mobility patterns and phenomena at the urban scale. This is particularly relevant when examining shifts in the origin–destination trip patterns, as changes in the dynamics may signify the impact and directionality of mobility flows across areas. This study focuses on data-driven research utilizing population dynamics data, more widely known as aggregated mobile phone location data, to estimate the origin–destination trip matrices in a more dynamic and contextual form. Departing from traditional static approaches to estimate origin destination, this research develops an enhanced gravity model framework to estimate time-varying trip matrices, enabling a more contextual and relevant understanding of mobility flows across different areas. The study then analyzes shifts in trip patterns from the estimated dynamic origin destination patterns, focusing on the impact of COVID-19 pandemic-related policies on urban travel flows in Kyoto city, Japan. By expanding the utilization and understanding of the dataset and method, this research contributes to the development of more contextual uses of trip pattern analysis in the fields of urban and transportation studies.

了解人口分布的动态变化对于理解城市尺度的时空流动模式和现象至关重要。这在检查出发地-目的地旅行模式的变化时尤其重要，因为动态变化可能意味着跨地区流动的影响和方向性。本研究侧重于数据驱动研究，利用人口动态数据，更广泛地称为汇总移动电话位置数据，以更动态和上下文形式估计出发地-目的地旅行矩阵。与传统的静态方法不同，本研究开发了一个增强的重力模型框架来估计时变的行程矩阵，从而使人们能够更准确地了解不同地区的流动性流动。然后，该研究分析了估计的动态始发目的地模式的旅行模式变化，重点关注与COVID-19大流行相关的政策对日本京都城市旅行流的影响。通过扩大对数据集和方法的利用和理解，本研究有助于在城市和交通研究领域发展更多的出行模式分析的上下文应用。

{"title":"Analyzing temporal mobility pattern shifts: Dynamic origin–destination estimation from aggregated mobile phone location data","authors":"Alvin Noviansyah, Nobuhiro Uno, Ryoji Matsunaka, Tomoki Nishigaki","doi":"10.1016/j.trip.2025.101806","DOIUrl":"10.1016/j.trip.2025.101806","url":null,"abstract":"<div><div>Understanding the dynamic shifts in population distribution is crucial for comprehending spatiotemporal mobility patterns and phenomena at the urban scale. This is particularly relevant when examining shifts in the origin–destination trip patterns, as changes in the dynamics may signify the impact and directionality of mobility flows across areas. This study focuses on data-driven research utilizing population dynamics data, more widely known as aggregated mobile phone location data, to estimate the origin–destination trip matrices in a more dynamic and contextual form. Departing from traditional static approaches to estimate origin destination, this research develops an enhanced gravity model framework to estimate time-varying trip matrices, enabling a more contextual and relevant understanding of mobility flows across different areas. The study then analyzes shifts in trip patterns from the estimated dynamic origin destination patterns, focusing on the impact of COVID-19 pandemic-related policies on urban travel flows in Kyoto city, Japan. By expanding the utilization and understanding of the dataset and method, this research contributes to the development of more contextual uses of trip pattern analysis in the fields of urban and transportation studies.</div></div>","PeriodicalId":36621,"journal":{"name":"Transportation Research Interdisciplinary Perspectives","volume":"36 ","pages":"Article 101806"},"PeriodicalIF":3.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Civil society-led shared mobility for transport equity? An empirical analysis from Berlin 以民间社会为主导的共享交通公平？来自柏林的实证分析

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2025.101822

Michael Bissel, Anke Kläver

This study explores the potential of community-led shared mobility to achieve equitable transport, using a socially innovative cargo bike-sharing system in Berlin as a case study. The empirical approach combines booking records, survey responses, and spatial data. This approach enables an analysis of transport equity in terms of spatial distribution, as well as user structure and behavior. The results suggest that community-led initiatives may complement commercial shared mobility operators and be associated with more equitable transport system outcomes. In particular, the results show no differences in cargo bike host locations based on social status index groups. Additionally, the gender distribution aligns with that of the general population. Cargo bikes were found to be used for diverse purposes which differed by social status area and gender. The findings suggest that promoting socially innovative, community-led projects may represent a promising governance approach associated with enhanced transport equity.

本研究以柏林的一个具有社会创新性的货运自行车共享系统为例，探讨了社区主导的共享交通实现公平运输的潜力。实证方法结合了预订记录、调查反馈和空间数据。这种方法能够从空间分布以及用户结构和行为方面分析运输公平性。结果表明，社区主导的举措可以补充商业共享交通运营商，并与更公平的交通系统结果相关联。特别是，结果显示，基于社会地位指数组的货运自行车主机位置没有差异。此外，性别分布与一般人口的分布一致。根据社会地位、地区和性别的不同，货运自行车的用途也各不相同。研究结果表明，促进社会创新、社区主导的项目可能是一种与增强交通公平相关的有希望的治理方法。

引用次数: 0

Dar es Salaam’s Bus-Rapid-Transit system in view of systemic criticality 达累斯萨拉姆的快速公交系统，考虑到系统的重要性

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2025.101824

Genet Alem Gebregiorgis, Stefan Greiving

The Dar es Salaam Bus Rapid Transit (DBRT) system is a cornerstone of urban mobility and socioeconomic development. However, its fixed-route, centralized design makes it highly vulnerable to flood-related disruptions, a risk exacerbated by climate change, unplanned urban development, and the loss of green spaces. Using DBRT, as case study this paper assesses systemic criticality of a transport system through surveys, key-informant interviews, participatory scenario workshops, and secondary research. The findings reveal profound logical and physical interdependencies between the DBRT and key economic sectors; a disruption could therefore cascade through critical infrastructures vital to the regional socioeconomic systems. To mitigate these risks, the study recommends integrating disaster risk management into transit planning, formalizing informal transportation for redundancy, and promoting nature-based solutions, such as recuperating wetland and green covers, to buffer against flooding and sea-level raise. Long-term strategies should pursue polycentric urban design to decrease reliance on centralized infrastructure. This study underscores the necessity of systemic criticality assessments for building resilient transit systems in rapidly growing cities.

达累斯萨拉姆快速公交（DBRT）系统是城市交通和社会经济发展的基石。然而，它的固定路线、集中式设计使其极易受到与洪水相关的破坏，气候变化、无计划的城市发展和绿地的丧失加剧了这种风险。本文以DBRT为例，通过调查、关键信息者访谈、参与式情景研讨会和二次研究，评估了运输系统的系统临界性。研究结果揭示了DBRT与主要经济部门之间深刻的逻辑和物理相互依存关系；因此，对区域社会经济系统至关重要的关键基础设施可能会受到破坏。为了减轻这些风险，该研究建议将灾害风险管理纳入交通规划，将非正式交通方式正规化以减少冗余，并推广基于自然的解决方案，如恢复湿地和绿色覆盖，以缓冲洪水和海平面上升。长期战略应追求多中心城市设计，以减少对集中式基础设施的依赖。这项研究强调了在快速发展的城市中建立弹性交通系统的系统临界性评估的必要性。

{"title":"Dar es Salaam’s Bus-Rapid-Transit system in view of systemic criticality","authors":"Genet Alem Gebregiorgis, Stefan Greiving","doi":"10.1016/j.trip.2025.101824","DOIUrl":"10.1016/j.trip.2025.101824","url":null,"abstract":"<div><div>The Dar es Salaam Bus Rapid Transit (DBRT) system is a cornerstone of urban mobility and socioeconomic development. However, its fixed-route, centralized design makes it highly vulnerable to flood-related disruptions, a risk exacerbated by climate change, unplanned urban development, and the loss of green spaces. Using DBRT, as case study this paper assesses systemic criticality of a transport system through surveys, key-informant interviews, participatory scenario workshops, and secondary research. The findings reveal profound logical and physical interdependencies between the DBRT and key economic sectors; a disruption could therefore cascade through critical infrastructures vital to the regional socioeconomic systems. To mitigate these risks, the study recommends integrating disaster risk management into transit planning, formalizing informal transportation for redundancy, and promoting nature-based solutions, such as recuperating wetland and green covers, to buffer against flooding and sea-level raise. Long-term strategies should pursue polycentric urban design to decrease reliance on centralized infrastructure. This study underscores the necessity of systemic criticality assessments for building resilient transit systems in rapidly growing cities.</div></div>","PeriodicalId":36621,"journal":{"name":"Transportation Research Interdisciplinary Perspectives","volume":"36 ","pages":"Article 101824"},"PeriodicalIF":3.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A comparative analytical framework for modeling road fatalities with count regression techniques 用计数回归技术模拟道路死亡人数的比较分析框架

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2025.101807

Pichit Boonkrong , Teerawat Simmachan

Regions with persistently high road traffic fatality (RTF) rates remain a major global safety concern. Using a nationwide dataset of 20,448 road accidents recorded in Thailand in 2021, this study compares 6 count regression models including Poisson, Negative Binomial (NB), Zero-Inflated Poisson (ZIP), Zero-Inflated Negative Binomial (ZINB), Hurdle Poisson (HP), and Hurdle Negative Binomial (HNB) to identify the best-fitting model for explaining RTF counts. Each model was evaluated using five-fold cross-validation across seven performance criteria, including AIC, BIC, Pearson’s χ², dispersion, pseudo-R², MAE, and RMSE. The HNB model achieved the lowest AIC (11,557.17) and BIC (11,819.05), the dispersion statistic closest to unity (1.0460), and the highest pseudo-R² (0.1479), confirming its superior goodness-of-fit and parsimony. The two-part HNB model separately estimated the likelihood of fatalities and the expected number of deaths given a fatal crash. In the zero part, festive months showed lower odds of fatality, while national highways and northeastern regions exhibited increased fatal risks. In the count part, fatal severity rose on highways and among larger vehicles such as cars and pickups. These findings reveal that road fatalities are driven by temporal, environmental, and vehicular factors. The study underscores the importance of robust count models for evidence-based road safety policy and targeted interventions.

道路交通死亡率持续高企的区域仍然是一个主要的全球安全问题。本研究利用泰国2021年记录的20,448起道路交通事故的全国数据集，比较了6种计数回归模型，包括泊松、负二项（NB）、零膨胀泊松（ZIP）、零膨胀负二项（ZINB）、栏位泊松（HP）和栏位负二项（HNB），以确定解释RTF计数的最佳拟合模型。对每个模型进行五重交叉验证，包括AIC、BIC、Pearson’s χ2、离散度、伪r2、MAE和RMSE。HNB模型的AIC最低（11,557.17），BIC最低（11,819.05），离散统计量最接近统一（1.0460），伪r2最高（0.1479），证明了HNB模型具有较好的拟合优度和简洁性。由两部分组成的HNB模型分别估计了致命事故的死亡可能性和预期死亡人数。在零部分，节日期间的死亡率较低，而国家高速公路和东北地区的致命风险增加。在高速公路上，以及汽车和皮卡等大型车辆的致命严重程度有所上升。这些发现表明，道路死亡人数受时间、环境和车辆因素的影响。该研究强调了健全的计数模型对于循证道路安全政策和有针对性的干预措施的重要性。

{"title":"A comparative analytical framework for modeling road fatalities with count regression techniques","authors":"Pichit Boonkrong , Teerawat Simmachan","doi":"10.1016/j.trip.2025.101807","DOIUrl":"10.1016/j.trip.2025.101807","url":null,"abstract":"<div><div>Regions with persistently high road traffic fatality (RTF) rates remain a major global safety concern. Using a nationwide dataset of 20,448 road accidents recorded in Thailand in 2021, this study compares 6 count regression models including Poisson, Negative Binomial (NB), Zero-Inflated Poisson (ZIP), Zero-Inflated Negative Binomial (ZINB), Hurdle Poisson (HP), and Hurdle Negative Binomial (HNB) to identify the best-fitting model for explaining RTF counts. Each model was evaluated using five-fold cross-validation across seven performance criteria, including AIC, BIC, Pearson’s χ<sup>2</sup>, dispersion, pseudo-R<sup>2</sup>, MAE, and RMSE. The HNB model achieved the lowest AIC (11,557.17) and BIC (11,819.05), the dispersion statistic closest to unity (1.0460), and the highest pseudo-R<sup>2</sup> (0.1479), confirming its superior goodness-of-fit and parsimony. The two-part HNB model separately estimated the likelihood of fatalities and the expected number of deaths given a fatal crash. In the zero part, festive months showed lower odds of fatality, while national highways and northeastern regions exhibited increased fatal risks. In the count part, fatal severity rose on highways and among larger vehicles such as cars and pickups. These findings reveal that road fatalities are driven by temporal, environmental, and vehicular factors. The study underscores the importance of robust count models for evidence-based road safety policy and targeted interventions.</div></div>","PeriodicalId":36621,"journal":{"name":"Transportation Research Interdisciplinary Perspectives","volume":"36 ","pages":"Article 101807"},"PeriodicalIF":3.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling seismic impacts on bridge networks and accessibility: a scenario-based framework for resilient transportation systems 模拟地震对桥梁网络和可达性的影响：弹性交通系统的场景框架

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2025.101832

Osama A. Abaza, Matthew Hegland

Bridges serve as critical links in regional transportation networks, where seismic disruption can generate cascading impacts on mobility, accessibility, and emergency response. This study develops a transferable, scenario-based modeling framework to quantify how varying earthquake magnitudes influence bridge performance and regional connectivity. Structural, geotechnical, and seismic indicators are integrated within a formally defined ordinal logistic regression (OLR) model calibrated using post-event bridge inspection data from the 2018M7.1 Point Mackenzie earthquake in Southcentral Alaska. Predictor variables—including bridge age, condition, soil uniformity, and magnitude-scaled peak ground acceleration (PGA)—were used to estimate ordered damage probabilities across four earthquake scenarios (M6.5–M9.5).

Results indicate a nonlinear escalation in bridge vulnerability with increasing magnitude, with the highest damage concentrations along primary corridors characterized by limited redundancy. Under upper-bound scenarios, predicted collapse probabilities reach 20–25 %, producing potential isolation of communities reliant on single-route access. Accessibility modeling shows that even moderate structural degradation can propagate into disproportionately large regional mobility losses.

The framework supports resilience-oriented planning by linking probabilistic damage modeling with geospatial accessibility analysis, enabling agencies to identify corridor-level risks, prioritize retrofit investments, and evaluate emergency response strategies. Although demonstrated in Alaska, the approach is adaptable to other seismically active or infrastructure-limited regions. Key methodological assumptions and uncertainties, particularly those related to PGA scaling and model extrapolation—are explicitly acknowledged to guide appropriate interpretation of results.

桥梁是区域交通网络的关键环节，地震破坏会对交通、可达性和应急响应产生连锁影响。本研究开发了一个可转移的、基于场景的建模框架，以量化不同地震震级对桥梁性能和区域连通性的影响。结构、岩土和地震指标被整合到一个正式定义的有序逻辑回归（OLR）模型中，该模型使用阿拉斯加中南部2018M7.1 Point Mackenzie地震的事件后桥梁检查数据进行校准。预测变量-包括桥梁年龄，条件，土壤均匀性和震级峰值地面加速度(PGA) -用于估计四种地震情景（M6.5-M9.5）的有序破坏概率。结果表明，桥梁易损性呈非线性上升趋势，损伤集中在冗余有限的主要廊道沿线。在上限情景下，预测崩溃概率达到20 - 25%，产生依赖单路由访问的社区的潜在隔离。可达性模型表明，即使是适度的结构退化也会传播成不成比例的大区域流动性损失。该框架通过将概率损害建模与地理空间可达性分析联系起来，支持面向复原力的规划，使各机构能够识别走廊级风险，确定改造投资的优先次序，并评估应急响应战略。虽然在阿拉斯加进行了示范，但这种方法也适用于其他地震活跃或基础设施有限的地区。关键的方法假设和不确定性，特别是那些与PGA缩放和模型外推相关的假设和不确定性，被明确承认，以指导对结果的适当解释。

{"title":"Modeling seismic impacts on bridge networks and accessibility: a scenario-based framework for resilient transportation systems","authors":"Osama A. Abaza, Matthew Hegland","doi":"10.1016/j.trip.2025.101832","DOIUrl":"10.1016/j.trip.2025.101832","url":null,"abstract":"<div><div>Bridges serve as critical links in regional transportation networks, where seismic disruption can generate cascading impacts on mobility, accessibility, and emergency response. This study develops a transferable, scenario-based modeling framework to quantify how varying earthquake magnitudes influence bridge performance and regional connectivity. Structural, geotechnical, and seismic indicators are integrated within a formally defined ordinal logistic regression (OLR) model calibrated using post-event bridge inspection data from the 2018M7.1 Point Mackenzie earthquake in Southcentral Alaska. Predictor variables—including bridge age, condition, soil uniformity, and magnitude-scaled peak ground acceleration (PGA)—were used to estimate ordered damage probabilities across four earthquake scenarios (M6.5–M9.5).</div><div>Results indicate a nonlinear escalation in bridge vulnerability with increasing magnitude, with the highest damage concentrations along primary corridors characterized by limited redundancy. Under upper-bound scenarios, predicted collapse probabilities reach 20–25 %, producing potential isolation of communities reliant on single-route access. Accessibility modeling shows that even moderate structural degradation can propagate into disproportionately large regional mobility losses.</div><div>The framework supports resilience-oriented planning by linking probabilistic damage modeling with geospatial accessibility analysis, enabling agencies to identify corridor-level risks, prioritize retrofit investments, and evaluate emergency response strategies. Although demonstrated in Alaska, the approach is adaptable to other seismically active or infrastructure-limited regions. Key methodological assumptions and uncertainties, particularly those related to PGA scaling and model extrapolation—are explicitly acknowledged to guide appropriate interpretation of results.</div></div>","PeriodicalId":36621,"journal":{"name":"Transportation Research Interdisciplinary Perspectives","volume":"36 ","pages":"Article 101832"},"PeriodicalIF":3.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A SysML-based framework towards EASA CS-23 digitalization: An MBSE approach 基于sysml的EASA CS-23数字化框架：一种MBSE方法

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2025.101810

Pierluigi Della Vecchia , Claudio Mirabella , Michele Tuccillo , Carlo Emanuele Riboldi , Marco Fioriti , Fixherald Shahini , Francesca Roncolini

The general aviation sector is undergoing rapid transformation, driven by technological innovation and increasing market demand. However, certification frameworks remain predominantly document-based, resulting in inefficiencies and elevated costs. This study presents a digital certification framework grounded in Model-Based Systems Engineering (MBSE), utilizing the Systems Modeling Language (SysML) to encode the European Union Aviation Safety Agency (EASA) Certification Specifications (CS-23) and Acceptable Means of Compliance (AMC) into a structured, machine-readable model. The proposed methodology enables automated verification and validation, report generation, and traceability across regulatory artifacts.

Beyond its technical contributions, the framework addresses interdisciplinary challenges in the present regulatory landscape, systems engineering, and organizational communication. It highlights the complexity of certification processes, emphasizing the need for coherent information exchange among stakeholders with varying levels of technical proficiency. The study contributes to ongoing discussions in the social sciences regarding institutional adaptation, digital transformation, and collaborative governance in high-reliability sectors. The framework’s scalability to commercial aviation and its potential to support emerging aircraft architectures underscore its relevance to both industry and regulatory bodies.

在技术创新和不断增长的市场需求的推动下，通用航空行业正在经历快速转型。然而，认证框架仍然主要基于文档，导致效率低下和成本上升。本研究提出了一个基于基于模型的系统工程（MBSE）的数字认证框架，利用系统建模语言（SysML）将欧盟航空安全局（EASA）认证规范（CS-23）和可接受的合规方法（AMC）编码为结构化的机器可读模型。所建议的方法支持跨法规工件的自动验证和确认、报告生成和可追溯性。除了其技术贡献之外，该框架还解决了当前监管环境、系统工程和组织沟通中的跨学科挑战。它强调了认证过程的复杂性，强调了具有不同技术熟练程度的利益相关者之间进行一致信息交换的必要性。该研究有助于社会科学中关于高可靠性部门的制度适应、数字化转型和协作治理的持续讨论。该框架在商用航空领域的可扩展性及其支持新兴飞机架构的潜力，突显了其与行业和监管机构的相关性。

{"title":"A SysML-based framework towards EASA CS-23 digitalization: An MBSE approach","authors":"Pierluigi Della Vecchia , Claudio Mirabella , Michele Tuccillo , Carlo Emanuele Riboldi , Marco Fioriti , Fixherald Shahini , Francesca Roncolini","doi":"10.1016/j.trip.2025.101810","DOIUrl":"10.1016/j.trip.2025.101810","url":null,"abstract":"<div><div>The general aviation sector is undergoing rapid transformation, driven by technological innovation and increasing market demand. However, certification frameworks remain predominantly document-based, resulting in inefficiencies and elevated costs. This study presents a digital certification framework grounded in Model-Based Systems Engineering (MBSE), utilizing the Systems Modeling Language (SysML) to encode the European Union Aviation Safety Agency (EASA) Certification Specifications (CS-23) and Acceptable Means of Compliance (AMC) into a structured, machine-readable model. The proposed methodology enables automated verification and validation, report generation, and traceability across regulatory artifacts.</div><div>Beyond its technical contributions, the framework addresses interdisciplinary challenges in the present regulatory landscape, systems engineering, and organizational communication. It highlights the complexity of certification processes, emphasizing the need for coherent information exchange among stakeholders with varying levels of technical proficiency. The study contributes to ongoing discussions in the social sciences regarding institutional adaptation, digital transformation, and collaborative governance in high-reliability sectors. The framework’s scalability to commercial aviation and its potential to support emerging aircraft architectures underscore its relevance to both industry and regulatory bodies.</div></div>","PeriodicalId":36621,"journal":{"name":"Transportation Research Interdisciplinary Perspectives","volume":"36 ","pages":"Article 101810"},"PeriodicalIF":3.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transportation, ride-hailing and discrimination among the blind and low vision community 交通、网约车以及对盲人和低视力群体的歧视

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2026.101837

Sylvia A. Brady , Nels Grevstad , Sarah A. Schliemann , C. Glatthar

Individuals with disabilities, including those who are blind or have low vision (BLV), travel less frequently than non-disabled individuals due to persistent barriers across transportation modes. Ride-hailing services such as Uber and Lyft offer the potential to enhance mobility for the BLV community by providing flexible, on-demand travel options. However, many BLV individuals also experience discrimination when using these services, and there is a lack of research on their transportation and discrimination experiences. This study used an online survey as the first part of a mixed-methods research project to document and quantify the transportation experiences of BLV individuals, with a focus on ride-hailing. We explored differences in user satisfaction and perceptions of discrimination between Uber and Lyft and examined whether guide dog use contributes to higher rates of service denial or mistreatment. Our findings indicate that while ride-hailing services significantly improve access to destinations for BLV users, they are also the mode in which discrimination is most frequently reported. Guide dog users face notably higher rates of ride refusals. Respondents expressed slightly greater satisfaction with Lyft than with Uber. These findings underscore the dual nature of ride-hailing for BLV individuals: it offers greater independence but also introduces new challenges. This research has implications for ride-hailing companies seeking to improve accessibility, and for public agencies partnering with these platforms to deliver equitable, on-demand transportation services.

由于各种交通方式之间存在障碍，残疾人（包括盲人或低视力者）的出行频率低于非残疾人。Uber和Lyft等叫车服务通过提供灵活的按需出行选择，为BLV社区提供了增强移动性的潜力。然而，许多BLV个体在使用这些服务时也遭受了歧视，并且缺乏对其交通和歧视经历的研究。本研究采用在线调查作为混合方法研究项目的第一部分，记录和量化BLV个人的交通体验，重点是叫车服务。我们探讨了优步和Lyft在用户满意度和歧视感知方面的差异，并研究了导盲犬的使用是否会导致更高的服务拒绝率或虐待率。我们的研究结果表明，虽然网约车服务显着改善了BLV用户到达目的地的机会，但它们也是最常被报道的歧视模式。导盲犬使用者面临明显更高的乘坐拒绝率。受访者对Lyft的满意度略高于优步。这些发现强调了叫车服务对BLV个人的双重性质：它提供了更大的独立性，但也带来了新的挑战。这项研究对寻求改善可达性的网约车公司，以及与这些平台合作提供公平、按需交通服务的公共机构都有影响。

{"title":"Transportation, ride-hailing and discrimination among the blind and low vision community","authors":"Sylvia A. Brady , Nels Grevstad , Sarah A. Schliemann , C. Glatthar","doi":"10.1016/j.trip.2026.101837","DOIUrl":"10.1016/j.trip.2026.101837","url":null,"abstract":"<div><div>Individuals with disabilities, including those who are blind or have low vision (BLV), travel less frequently than non-disabled individuals due to persistent barriers across transportation modes. Ride-hailing services such as Uber and Lyft offer the potential to enhance mobility for the BLV community by providing flexible, on-demand travel options. However, many BLV individuals also experience discrimination when using these services, and there is a lack of research on their transportation and discrimination experiences. This study used an online survey as the first part of a mixed-methods research project to document and quantify the transportation experiences of BLV individuals, with a focus on ride-hailing. We explored differences in user satisfaction and perceptions of discrimination between Uber and Lyft and examined whether guide dog use contributes to higher rates of service denial or mistreatment. Our findings indicate that while ride-hailing services significantly improve access to destinations for BLV users, they are also the mode in which discrimination is most frequently reported. Guide dog users face notably higher rates of ride refusals. Respondents expressed slightly greater satisfaction with Lyft than with Uber. These findings underscore the dual nature of ride-hailing for BLV individuals: it offers greater independence but also introduces new challenges. This research has implications for ride-hailing companies seeking to improve accessibility, and for public agencies partnering with these platforms to deliver equitable, on-demand transportation services.</div></div>","PeriodicalId":36621,"journal":{"name":"Transportation Research Interdisciplinary Perspectives","volume":"36 ","pages":"Article 101837"},"PeriodicalIF":3.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Policy-driven life-cycle emissions and climate resilience of highway pavements: an LCA-optimization and scenario analysis 政策驱动的公路路面全生命周期排放与气候适应能力：lca优化与情景分析

IF 3.8 Q2 TRANSPORTATION

Transportation Research Interdisciplinary Perspectives

Pub Date : 2026-01-06 DOI: 10.1016/j.trip.2025.101811

Musab Abuaddous , Odey Alshboul , Ali Shehadeh

This study quantifies the environmental and economic implications of highway pavement construction and management in Jordan’s arid and semi-arid regions and evaluates policy-relevant adaptation pathways for 2025–2065, linking pavement engineering decisions to transportation-system sustainability and reliability. We couple a process-based life-cycle assessment (LCA) with a climate-driven deterioration–maintenance optimization model using projected stressors (+2.3 °C mean warming, +20 % extreme-heat days >40 °C, and higher rainfall variability). Under Business-as-Usual (BAU), phase contributions to total life-cycle emissions are: raw materials 45 %, construction 30 %, transport 15 %, maintenance 7 %, and end-of-life 3 %. Baseline emissions equal ∼300 tCO₂e km⁻¹ (asphalt) and ∼180 tCO₂e km⁻¹ (concrete). Optimization reduces emissions to ∼225 tCO₂e km⁻¹ (–25 %) and ∼150 tCO₂e km⁻¹ (–17 %), while lowering life-cycle costs by 22 % (asphalt) and 18 % (concrete). Policy packages amplify benefits: a Moderate Sustainability pathway reduces emissions by ∼20 % versus BAU, while a High Sustainability pathway achieves >40 % reduction and yields an 18 % net cost saving over 40 years despite 15–25 % higher upfront costs. Climate stress increases damage rates (asphalt 0.015 → 0.019 y⁻¹; concrete 0.008 → 0.011 y⁻¹), raising thermal cracking by 18 % and moisture-driven rutting by 15 %. Spatially, emissions are lowest in the Jordan Valley and highest in the Northern Highlands/Eastern Desert due to terrain and haul distances. Findings translate into actionable transport-policy levers—performance-grade upgrades, minimum recycled-content mandates, broad warm-mix adoption, and regionalized specifications—supporting lower-carbon, more climate-resilient networks with an estimated ≈30 % resilience/structural integrity gain under fiscally viable investment strategies.

本研究量化了约旦干旱和半干旱地区公路路面建设和管理的环境和经济影响，并评估了2025-2065年政策相关的适应途径，将路面工程决策与交通系统的可持续性和可靠性联系起来。我们将基于过程的生命周期评估（LCA）与气候驱动的退化维护优化模型结合起来，该模型使用了预测的压力源（平均升温+2.3°C，极端高温天数+ 20% >；40°C，以及更高的降雨量变异性）。在“一切照旧”（BAU）模式下，各个阶段对整个生命周期排放的贡献如下：原材料占45%，建筑占30%，运输占15%，维护占7%，生命周期结束占3%。基线排放量等于（沥青）约300吨二氧化碳当量公里−1，（混凝土）约180吨二氧化碳当量公里−1。优化后的排放量分别减少至~ 225吨二氧化碳当量km - 1（- 25%）和~ 150吨二氧化碳当量km - 1(- 17%)，同时生命周期成本分别降低22%（沥青）和18%（混凝土）。一揽子政策可扩大效益：与BAU相比，中等可持续性途径可减少约20%的排放量，而高可持续性途径可减少40%的排放量，并在40年内节省18%的净成本，尽管前期成本高出15 - 25%。气候应力增加了损伤率（沥青0.015→0.019 y - 1；混凝土0.008→0.011 y - 1），使热裂率增加18%，水分导致车辙率增加15%。在空间上，由于地形和运输距离的原因，约旦河谷的排放量最低，北部高地/东部沙漠的排放量最高。研究结果转化为可操作的交通政策杠杆——性能等级升级、最低再循环含量规定、广泛采用暖混合燃料和区区化规范——支持低碳、更具气候适应性的交通网络，在财政上可行的投资策略下，预计可获得约30%的弹性/结构完整性增益。

{"title":"Policy-driven life-cycle emissions and climate resilience of highway pavements: an LCA-optimization and scenario analysis","authors":"Musab Abuaddous , Odey Alshboul , Ali Shehadeh","doi":"10.1016/j.trip.2025.101811","DOIUrl":"10.1016/j.trip.2025.101811","url":null,"abstract":"<div><div>This study quantifies the environmental and economic implications of highway pavement construction and management in Jordan’s arid and semi-arid regions and evaluates policy-relevant adaptation pathways for 2025–2065, linking pavement engineering decisions to transportation-system sustainability and reliability. We couple a process-based life-cycle assessment (LCA) with a climate-driven deterioration–maintenance optimization model using projected stressors (+2.3 °C mean warming, +20 % extreme-heat days >40 °C, and higher rainfall variability). Under Business-as-Usual (BAU), phase contributions to total life-cycle emissions are: raw materials 45 %, construction 30 %, transport 15 %, maintenance 7 %, and end-of-life 3 %. Baseline emissions equal ∼300 tCO<sub>2</sub>e km<sup>−1</sup> (asphalt) and ∼180 tCO<sub>2</sub>e km<sup>−1</sup> (concrete). Optimization reduces emissions to ∼225 tCO<sub>2</sub>e km<sup>−1</sup> (–25 %) and ∼150 tCO<sub>2</sub>e km<sup>−1</sup> (–17 %), while lowering life-cycle costs by 22 % (asphalt) and 18 % (concrete). Policy packages amplify benefits: a Moderate Sustainability pathway reduces emissions by ∼20 % versus BAU, while a High Sustainability pathway achieves >40 % reduction and yields an 18 % net cost saving over 40 years despite 15–25 % higher upfront costs. Climate stress increases damage rates (asphalt 0.015 → 0.019 y<sup>−1</sup>; concrete 0.008 → 0.011 y<sup>−1</sup>), raising thermal cracking by 18 % and moisture-driven rutting by 15 %. Spatially, emissions are lowest in the Jordan Valley and highest in the Northern Highlands/Eastern Desert due to terrain and haul distances. Findings translate into actionable transport-policy levers—performance-grade upgrades, minimum recycled-content mandates, broad warm-mix adoption, and regionalized specifications—supporting lower-carbon, more climate-resilient networks with an estimated ≈30 % resilience/structural integrity gain under fiscally viable investment strategies.</div></div>","PeriodicalId":36621,"journal":{"name":"Transportation Research Interdisciplinary Perspectives","volume":"36 ","pages":"Article 101811"},"PeriodicalIF":3.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0