Computers Environment and Urban Systems最新文献_第5页

Exploring large language models for human mobility prediction under public events 探索用于公共事件下人员流动预测的大型语言模型

IF 7.1 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-29 DOI: 10.1016/j.compenvurbsys.2024.102153

Yuebing Liang , Yichao Liu , Xiaohan Wang , Zhan Zhao

{"title":"Exploring large language models for human mobility prediction under public events","authors":"Yuebing Liang , Yichao Liu , Xiaohan Wang , Zhan Zhao","doi":"10.1016/j.compenvurbsys.2024.102153","DOIUrl":"10.1016/j.compenvurbsys.2024.102153","url":null,"abstract":"<div><p>Public events, such as concerts and sports games, can be major attractors for large crowds, leading to irregular surges in travel demand. Accurate human mobility prediction for public events is thus crucial for event planning as well as traffic or crowd management. While rich textual descriptions about public events are commonly available from online sources, it is challenging to encode such information in statistical or machine learning models. Existing methods are generally limited in incorporating textual information, handling data sparsity, or providing rationales for their predictions. To address these challenges, we introduce a framework for human mobility prediction under public events (LLM-MPE) based on Large Language Models (LLMs), leveraging their unprecedented ability to process textual data, learn from minimal examples, and generate human-readable explanations. Specifically, LLM-MPE first transforms raw, unstructured event descriptions from online sources into a standardized format, and then segments historical mobility data into regular and event-related components. A prompting strategy is designed to direct LLMs in making and rationalizing demand predictions considering historical mobility and event features. A case study is conducted for Barclays Center in New York City, based on publicly available event information and taxi trip data. Results show that LLM-MPE surpasses traditional models, particularly on event days, with textual data significantly enhancing its accuracy. Furthermore, LLM-MPE offers interpretable insights into its predictions. Despite the great potential of LLMs, we also identify key challenges including misinformation and high costs that remain barriers to their broader adoption in large-scale human mobility analysis.</p></div>","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"112 ","pages":"Article 102153"},"PeriodicalIF":7.1,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of urban greenway route using a coverage maximization model for lines 利用线路覆盖最大化模型优化城市绿道路线

IF 7.1 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-27 DOI: 10.1016/j.compenvurbsys.2024.102155

Wangshu Mu , Changfeng Li

{"title":"Optimization of urban greenway route using a coverage maximization model for lines","authors":"Wangshu Mu , Changfeng Li","doi":"10.1016/j.compenvurbsys.2024.102155","DOIUrl":"10.1016/j.compenvurbsys.2024.102155","url":null,"abstract":"<div><p>Urban greenways enhance the social, environmental, and ecological facets of city life by offering accessible and engaging spaces for residents. Despite their significance, the route selection for these urban greenways often hinges on suitability analysis, which can be influenced by a planner's subjective judgment, thus potentially introducing bias. Spatial optimization is a potential solution for determining optimal urban greenway routes. However, urban greenway route planning poses a distinct spatial optimization challenge that is not addressed by existing models. While urban greenways are inherently linear features, there are generally no specific start or end points dictated in their planning, which contrasts with many existing line-based spatial optimization models. Moreover, the way that coverage for urban greenways is measured—by taking into account the area encompassed within a particular distance from the entire urban greenway—deviates from the method used in conventional coverage optimization models, which works through discrete point-based evaluations. To address these gaps, our study introduces the maximal covering location problem for lines (MCLP-Line) model, which is designed to determine the optimal single-line-shaped urban greenway route with maximum coverage of nearby residents. In this paper, we utilize a line graph data structure to transform the candidate road network into a graph where road segments become nodes and junctions are treated as edges. We delineate the mixed integer linear programming formulation for the MCLP-Line model and discuss approaches for eliminating subtours in the MCLP-Line model in detail. The study provides simulation tests using both randomly generated data and an empirical dataset from Lhasa to demonstrate the practicality and computational efficiency of the proposed model.</p></div>","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"112 ","pages":"Article 102155"},"PeriodicalIF":7.1,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Time will not tell: Temporal approaches for privacy-preserving trajectory publishing 时间不会证明一切：隐私保护轨迹发布的时间方法

IF 7.1 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-24 DOI: 10.1016/j.compenvurbsys.2024.102154

Anna Brauer , Ville Mäkinen , Laura Ruotsalainen , Juha Oksanen

{"title":"Time will not tell: Temporal approaches for privacy-preserving trajectory publishing","authors":"Anna Brauer , Ville Mäkinen , Laura Ruotsalainen , Juha Oksanen","doi":"10.1016/j.compenvurbsys.2024.102154","DOIUrl":"10.1016/j.compenvurbsys.2024.102154","url":null,"abstract":"<div><p>Fine-granular spatio-temporal trajectories, i.e., time-stamped sequences of locations, play a pivotal role in transport and urban analytics. However, sharing or publishing trajectory data of individuals raises concerns about location privacy given the potential for re-identification and unintentional dissemination of sensitive information. A key enabler for privacy breaches is precise temporal information. Thus, this study investigates the privacy-preserving capabilities of third-party free mechanisms protecting trajectories by exclusively targeting the temporal dimension. We compare a deterministic and a stochastic technique for shifting trajectories in time by adding an offset to each timestamp. The stochastic approach leverages a generalized version of differential privacy to render an individual's presence at any event plausibly deniable, obstructing re-identification attacks based on spatio-temporal side knowledge. Furthermore, we present a Markov chain-based speed perturbation technique that preserves dynamic patterns while obfuscating travel times and motion attributes. Using simulated re-identification attacks, we analyze privacy gains and contrast them with the utility loss. The results demonstrate a favorable utility-to-privacy ratio of the temporal techniques compared to established spatial and spatio-temporal approaches. This underlines the importance of accounting for temporal aspects in addition to spatial considerations in privacy-preserving trajectory publishing.</p></div>","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"112 ","pages":"Article 102154"},"PeriodicalIF":7.1,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0198971524000838/pdfft?md5=16cb423999940008fd0bf6d4fdc5e586&pid=1-s2.0-S0198971524000838-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141952313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decoding (urban) form and function using spatially explicit deep learning 利用空间显式深度学习解码（城市）形态和功能

IF 6.8 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-15 DOI: 10.1016/j.compenvurbsys.2024.102147

Martin Fleischmann, Daniel Arribas-Bel

{"title":"Decoding (urban) form and function using spatially explicit deep learning","authors":"Martin Fleischmann, Daniel Arribas-Bel","doi":"10.1016/j.compenvurbsys.2024.102147","DOIUrl":"https://doi.org/10.1016/j.compenvurbsys.2024.102147","url":null,"abstract":"This paper explores how can geographical dimension be incorporated into deep learning designed to understand the composition of urban landscapes based on Sentinel 2 satellite imagery. Compared to standard computer vision, satellite imagery is unique as images sampled from the data form a continuous array, rather than being fully independent. We argue that the spatial configuration of the images is as important as the content of each image when attempting to capture a pattern that reflects the structure of the urban environment. We propose a series of approaches explicitly incorporating spatial dimension in the predictive pipeline based on the EfficientNetB4 convolutional neural network (CNN) and experimentally test their effect on model performance. The experiments in this study cover the scale of the sampled area, the effect of spatial augmentation, and the role of modelling (logit ensemble and histogram-based gradient-boosted classifiers) with and without the spatial context on the outputs of the neural network-generated vector of probabilities while trying to predict spatial signatures, a classification of primarily urban landscape based on form and function. The results suggest that certain ways of embedding spatial information, especially in the modelling step, consistently significantly improve the prediction accuracy and shall be considered on top of standard CNNs.","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"40 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How far are we towards sustainable Carfree cities combining shared autonomous vehicles with park-and-ride: An agent-based simulation assessment for Brussels 将共享自动驾驶车辆与停车换乘相结合的可持续无车城市还有多远？基于代理的布鲁塞尔模拟评估

IF 7.1 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-15 DOI: 10.1016/j.compenvurbsys.2024.102148

Jingjun Li, Evy Rombaut, Lieselot Vanhaverbeke

{"title":"How far are we towards sustainable Carfree cities combining shared autonomous vehicles with park-and-ride: An agent-based simulation assessment for Brussels","authors":"Jingjun Li, Evy Rombaut, Lieselot Vanhaverbeke","doi":"10.1016/j.compenvurbsys.2024.102148","DOIUrl":"10.1016/j.compenvurbsys.2024.102148","url":null,"abstract":"<div><p>This research investigates the potential of Shared Autonomous Vehicles (SAVs) to eliminate Conventional Private Vehicles (CPVs) towards sustainable carfree cities. Besides internal-city CPV travellers, travellers with external trips (either origins or destinations are outside the city) are also shifted to SAVs or Public Transit (PT) based on individuals' utilities with Park-and-Ride (PnR) initiatives. Our research presents a new PnR allocation approach optimising PnR facilities selections. Then, several Agent-Based Modellings (ABM) are conducted using MATSim. Brussels, the capital of Belgium, is selected as the case study area. The outcomes reveal the significant impacts of PnR market penetration and SAV pricing strategies. The proposed carfree initiatives bring notable benefits, including reduced congestion in the city centre and significant transport emission reductions. However, there are also drawbacks, such as longer travel time for PnR travellers and increased congestion in specific regions. Consequently, a PnR market penetration between 40% to 60% represents a feasible range under the current Brussels mobility network. Furthermore, SAVs should be seen as a complement to PT rather than with a very low fare structure. Generally, our findings emphasise the necessity for a multifaceted approach for different stakeholders to maximise SAV benefits towards more sustainable mobility networks.</p></div>","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"112 ","pages":"Article 102148"},"PeriodicalIF":7.1,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141623793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study on street walkability for older adults with different mobility abilities combining street view image recognition and deep learning - The case of Chengxianjie Community in Nanjing (China) 结合街景图像识别和深度学习，研究不同行动能力老年人的街道步行便利性--以南京市城厢街道社区（中国）为例

IF 7.1 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-14 DOI: 10.1016/j.compenvurbsys.2024.102151

Yinan Chen , Xiaoran Huang , Marcus White

{"title":"A study on street walkability for older adults with different mobility abilities combining street view image recognition and deep learning - The case of Chengxianjie Community in Nanjing (China)","authors":"Yinan Chen , Xiaoran Huang , Marcus White","doi":"10.1016/j.compenvurbsys.2024.102151","DOIUrl":"https://doi.org/10.1016/j.compenvurbsys.2024.102151","url":null,"abstract":"<div><p>China is on the brink of transitioning into an aged society, resulting in a growing demand for an age-friendly street-built environment. However, previous research has paid limited attention to the differentiated walking needs of older adults. To address this gap, this study investigated the relationship between street-built environments and the subjective perception of older adults with different physical capabilities, focusing on safety, comfort, and interest. The older adults were classified into three types based on their physical mobility abilities. The TrueSkill algorithm was used to develop an online image selection website to obtain perception scores for sampled pictures from these three types of older adults. Image segmentation and deep learning were combined to extract indices of street view factors, and machine learning was used to train a scoring prediction model for all streetscape pictures of the area. The study found differences in the subjective perception among all three types of older adults, namely independent elderly (A), mediated-assisted elderly (B), and dependent elderly (C). Type A older adults might be attracted to factors related to the interest of walking despite their negative impact on safety and comfort; Type B older adults were more concerned about street conditions for safety and comfort. Type C older adults were prone to the convenience of barrier-free access and visibility. This study contributes to the study of walkability by providing a research framework for the subjective walking perceptions of older adults with different physical capabilities. Additionally, the visualized walkability map can serve as a reference for architects and urban designers, further strengthening the development of age-friendly communities with the aid of human-centric computational analysis, evaluation, and design.</p></div>","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"112 ","pages":"Article 102151"},"PeriodicalIF":7.1,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141605497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How has digital participatory mapping influenced urban planning: Views from nine planning cases from Finland 数字参与式制图如何影响城市规划：芬兰九个规划案例的观点

IF 7.1 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-13 DOI: 10.1016/j.compenvurbsys.2024.102152

Valtteri Nurminen, Saana Rossi, Tiina Rinne, Marketta Kyttä

{"title":"How has digital participatory mapping influenced urban planning: Views from nine planning cases from Finland","authors":"Valtteri Nurminen, Saana Rossi, Tiina Rinne, Marketta Kyttä","doi":"10.1016/j.compenvurbsys.2024.102152","DOIUrl":"https://doi.org/10.1016/j.compenvurbsys.2024.102152","url":null,"abstract":"<div><p>Although the successfulness of public participation projects has been studied from many different perspectives, there is a lack of knowledge of how participation influences the planning outcomes. Through the interview study of nine Finnish urban planning projects, we studied how the use of a digital public participation GIS tool has influenced the outcomes of urban planning. In the selected cases the information collected with a PPGIS tool has been highly valued by the planners, leading to concretely influential participation in 6 out of 9 cases. In these cases, the planners gave concrete examples of how the information had influenced the created plan or draft. We created a model that describes how the information produced by participants is traveling from the participants to the outcome of the planning process. With this model, the main factors limiting the degree of influence were recognized, and actions were presented that could increase the influence.</p></div>","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"112 ","pages":"Article 102152"},"PeriodicalIF":7.1,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0198971524000814/pdfft?md5=84ffefa259f4cd50c6585fbd87581547&pid=1-s2.0-S0198971524000814-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141605567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating accessibility benefits and ridership of bike-transit integration through a social equity lens 从社会公平的角度评估自行车与公交一体化的无障碍优势和乘客数量

IF 7.1 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-10 DOI: 10.1016/j.compenvurbsys.2024.102150

Luyu Liu , Jinhyung Lee , Harvey J. Miller

{"title":"Evaluating accessibility benefits and ridership of bike-transit integration through a social equity lens","authors":"Luyu Liu , Jinhyung Lee , Harvey J. Miller","doi":"10.1016/j.compenvurbsys.2024.102150","DOIUrl":"https://doi.org/10.1016/j.compenvurbsys.2024.102150","url":null,"abstract":"<div><p>Integration of bike usage and transit services is an effective way to enhance accessibility for both transportation modes. Using high-resolution transit data, the study analyzes bike-transit multimodal accessibility and usage patterns through a social equity lens. Two types of accessibility increment are studied: <em>bicycle increment to public transit</em> – the benefits of using bicycle for transit riders, and <em>transit increment to cycling</em> – the merits of using transit for cyclists. Results show that bike-transit integration benefits both public transit riders and cyclists, expanding their accessible opportunities by up to 70% and enabling longer trips for cyclists while providing continuous benefits for public transit users. Meanwhile, better infrastructure significantly improves multimodal accessibility, resulting in more increment for public transit riders but less increment for cyclists. The paper also shows the spatiotemporal patterns of multimodal ridership. The research highlights disparities in bike-transit activities for Black communities due to inadequate local biking infrastructure. Black people majority neighborhoods enjoy less increment compared to other neighborhoods for shorter and very long trips; they also have disproportionately lower multimodal ridership despite much higher transit ridership and better transit access. Enhancing biking infrastructure in these areas can improve physical accessibility increment and promote social equity. The paper provides practical insights for transit planning, emphasizing the importance of connecting bike lanes and creating safer streets for cycling.</p></div>","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"112 ","pages":"Article 102150"},"PeriodicalIF":7.1,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141593857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A spatially-explicit sensitivity analysis of urban definitions: Uncovering implicit assumptions in the Degree of Urbanisation 城市定义的空间敏感性分析：揭示城市化程度中的隐含假设

IF 7.1 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-06 DOI: 10.1016/j.compenvurbsys.2024.102149

Céline Van Migerode , Ate Poorthuis , Ben Derudder

{"title":"A spatially-explicit sensitivity analysis of urban definitions: Uncovering implicit assumptions in the Degree of Urbanisation","authors":"Céline Van Migerode , Ate Poorthuis , Ben Derudder","doi":"10.1016/j.compenvurbsys.2024.102149","DOIUrl":"10.1016/j.compenvurbsys.2024.102149","url":null,"abstract":"<div><p>We introduce a spatially-explicit sensitivity framework to uncover potential biases in urban delineation approaches. Our starting point is that there is no broadly shared agreement on how to define or delineate urban areas, neither in terms of methods nor in terms of thresholds or criteria. Deciding on delineation criteria thus inevitably involves making certain assumptions that may unwittingly reproduce urban realities experienced by those expressing them, and have spatially unequally distributed implications. Understanding how specific criterion choices shape our understanding of ‘the urban’ and how, why, and – especially – <em>where</em> a definition leads to specific sensitivities is therefore key, especially when the definition is utilised beyond its intended application. Our framework to uncover these sensitivities is spatially explicit in the sense that it does not rely on aggregate statistics but instead focuses on the sensitivity of the ‘urban’ classification of individual spatial units at the finest spatial granularity. Applying the framework to the definition of the <em>Degree of Urbanisation</em> reveals that sensitivity is indeed not equally distributed across the world. Certain regions (e.g., areas around Dallas – Fort Worth) and specific types of urbanisation (e.g., desakota regions in Pacific Asia) exhibit higher sensitivity than others. We discuss how these sensitivities may embody certain implicit assumptions in the definition, and examine their broader theoretical implications.</p></div>","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"112 ","pages":"Article 102149"},"PeriodicalIF":7.1,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The cost of climate change: A generalized cost function approach for incorporating extreme weather exposure into public transit accessibility 气候变化的成本：将极端天气风险纳入公共交通可达性的通用成本函数方法

IF 7.1 1区地球科学

Computers Environment and Urban Systems Pub Date : 2024-07-05 DOI: 10.1016/j.compenvurbsys.2024.102145

Naser Ahmed , Jinhyung Lee , Luyu Liu , Junghwan Kim , Kee Moon Jang , Jinfei Wang

{"title":"The cost of climate change: A generalized cost function approach for incorporating extreme weather exposure into public transit accessibility","authors":"Naser Ahmed , Jinhyung Lee , Luyu Liu , Junghwan Kim , Kee Moon Jang , Jinfei Wang","doi":"10.1016/j.compenvurbsys.2024.102145","DOIUrl":"https://doi.org/10.1016/j.compenvurbsys.2024.102145","url":null,"abstract":"<div><p>Public transit offers urban populations physical accessibility to resources and opportunities. However, at the same time, transit trips often expose users to extreme environmental conditions, such as extreme heat and cold since transit journeys usually include out-of-vehicle trip segments including walking and waiting. Such exposure can be considered as environmental health costs because exposure to weather extremes can lead to adverse health outcomes. Even worse, climate change is increasing the intensity and frequency of extreme weather events. In this context, how can we make public transit accessibility measures ready for climate change? This paper attempts to answer this question by developing a generalized cost function approach combining travel time and environmental health costs into an integrated measure of dual accessibility: a measure of the travel costs of accessing a fixed number of destinations. We synthesize transport science, environmental health, remote sensing, and urban climatology to empower the proposed framework. To demonstrate the utility of the proposed method, we carry out an example study that incorporates transit passengers' extreme cold exposure into accessibility measures in the city of Winnipeg, Manitoba, Canada. Further, we perform a social equity analysis to investigate whether the increase in total integrated costs (i.e., decrease in accessibility) due to the inclusion of environmental health costs disproportionately affects socially disadvantaged population groups. The proposed method enables a more realistic and practical measurement of public transit accessibility under climate change; thereby, improving the readiness and resilience of our society and transport systems for future challenges.</p></div>","PeriodicalId":48241,"journal":{"name":"Computers Environment and Urban Systems","volume":"112 ","pages":"Article 102145"},"PeriodicalIF":7.1,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141540832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0