Journal of Transport Geography最新文献

{"title":"Liquefied natural gas trade network changes and its mechanism in the context of the Russia–Ukraine conflict","authors":"Renrong Xiao, Pengjun Zhao, Kangzheng Huang, Tianyu Ma, Zhangyuan He, Caixia Zhang, Di Lyu","doi":"10.1016/j.jtrangeo.2024.104101","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104101","url":null,"abstract":"Liquefied natural gas (LNG), as a transitional fossil fuel, plays a vital role in the modern energy transition process. In the context of the Russia–Ukraine geopolitical conflict, studying the evolution pattern and mechanisms of LNG trade networks is crucial for maintaining global energy security, particularly for countries relying on LNG imports. The study is based on multisource big data from 2021 to 2022, including Automatic Identification System (AIS) data, Gdelt news data, and remote sensing satellite data. It utilizes complex network metrics and the temporal exponential random graph model (TERGM) method to analyze the evolution patterns and mechanisms of the global LNG trade network. The research findings indicate the following: (1) The Russia–Ukraine conflict has led to a significant increase in LNG imports by European countries. Many countries have opened temporary direct shipping routes, which has accelerated the decline in the average path length of the network and improved network efficiency. (2) The global LNG trade community trend has been strengthened by the Russia–Ukraine conflict. The number of members within the trading community in which the United States is located has increased, with some European countries moving into this community. (3) The reciprocal structural characteristics of the LNG trade network drive its development, and the expansion of the national port handling capacity ability also drives network growth. Conversely, large differences in geopolitical relations, culture, and levels of governance between countries can hinder global LNG network development. This study provides a theoretical basis and decision-making reference for energy security under major geopolitical conflicts.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"54 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial inferences of visually impaired individuals concerning wayfinding: a case study of Istanbul’s Kadikoy area","authors":"Bahar Ferah","doi":"10.1016/j.jtrangeo.2024.104100","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104100","url":null,"abstract":"The Phenomenological approach of the research addresses the micro problems of visually impaired individuals regarding wayfinding in a familiar large-scale environment. The paper’s main objective is to understand how a large-scale urban context becomes familiar to a visually impaired individual. Also, it explores the impact of environmental cognition on enhancing visually impaired individuals’ spatial inferences in wayfinding. Cognitive mapping, as an effective method of wayfinding, has been used to improve these individuals independence and mobility capability in wayfinding. The paper’s conceptual framework queries pessimistic views elaborated initially by the (Fletcher, 1980) theory and underlying in most studies (implicitly or explicitly) about the spatial abilities of visually impaired individuals, both congenitally and adventitiously adult ones, concerning deficiency, inefficiency, and also difference model in a real, local example. Accordingly, based on the qualitative research method, in-situ fieldwork in the Istanbul Kadikoy area was conducted, where the Visually Impaired Association, a familiar place for all participants, is located. Eleven congenitally and adventitiously visually impaired individuals participated during the fieldwork. The subjects' wayfinding manner was monitored from the Eminonu-Kadikoy pier to the Association (approximately 650 m). Accordingly, they were asked to draw their cognitive maps. Furthermore, photo–video documentation was collected during the drawing. Based on the findings of participants' cognitive maps, spatial inferences of them, no matter whether congenital or adventitiously vision-impaired, were determined with almost similar marked points in the aerial map; even more details stood out from participants' piecemeal exploration habits. Based on the findings of the cognitive maps, the study highlights the difference model of Fletcher. It emphasizes that visually impaired individuals use different methods of wayfinding. The review intends to ensure vision-impaired individuals' strong intuition cognition in finding their way. This feature reveals a framework for interpreting the significance of non-visual perception and environmental cognition as well as visual perception and spatial cognition acquisition in urban planning designs.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"67 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing accessibility to high-speed rail stations by public transit and cars: A national-scale analysis","authors":"Long Cheng, Yuheng Chen, Shengyu He, Zheyuan Wang, Tanhua Jin, Min Yang","doi":"10.1016/j.jtrangeo.2024.104105","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104105","url":null,"abstract":"High-speed rail (HSR) stations, as a crucial connectivity node within a city, can effectively serve the population in the city and stimulate economic growth. Therefore, there is an urgent need to enhance the accessibility of HSR stations to various areas within the city. Despite this, most research tends to focus on local and regional transportation stations, with a lack of research on the accessibility of HSR stations on a national scale. Additionally, most research tends to focus exclusively on the accessibility of these stations via either public transit or cars, often overlooking a holistic comparison of both transportation modes. This study aims to bridge this gap by assessing the accessibility of high-speed rail stations across 31 provincial capitals in mainland China, utilizing travel time estimation data sourced from online mapping. We measured the number of grid cells accessible to passengers by car and public transit within a given time threshold. To identify the influencing factors, we conducted a two-sample <ce:italic>t</ce:italic>-test. Our analysis reveals that cars typically provide superior accessibility compared to public transit. Moreover, we find significant variability in public transit accessibility among these cities. Medium and smaller cities exhibit notably lower levels of public transit accessibility than large cities, and mountainous cities face further reductions due to challenging terrain. Key factors contributing to these accessibility disparities are identified, leading to several policy recommendations aimed at enhancing public transit systems. These include expanding bus service coverage, improving transport infrastructure, introducing microcirculation bus routes, and further developing rail transit networks to better serve urban populations and integrate them more effectively with high-speed rail services.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"41 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enriching OpenStreetMap network data for transportation applications: Insights into the impact of urban congestion on accessibility","authors":"Sailesh Acharya, Venu M. Garikapati, Michael Allen, Mingdong Lyu, Christopher Hoehne, Shivam Sharda, Robert Fitzgerald","doi":"10.1016/j.jtrangeo.2024.104096","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104096","url":null,"abstract":"OpenStreetMap (OSM) data is a valuable open-source resource for various transportation, traffic, and planning applications. However, OSM network data lack operating traffic speed information, which is critical for transport planning and operations. Addressing this shortcoming, this study leverages commercial vendor data (to serve as ground truth) with exogenous, open-source variables characterizing local transport infrastructure, land use, and demographic information to predict average congested traffic speeds on OSM networks. Three machine-learning models were tested and estimated for OSM links with and without speed limit information in the Denver metropolitan region. Among these, XGBoost performed best, with mean absolute errors of 3.27 and 3.62 mph for links with and without speed limits, respectively. The developed models accurately predicted traffic speeds for different hours and days of the week compared to ground truth data. Using these predicted speeds, drive accessibility scores were computed for the Denver region for different time periods using the Mobility Energy Productivity (MEP) metric to understand the impact of congestion on energy-efficient accessibility. Results show that congestion-adjusted drive accessibility can be significantly lower compared to accessibility calculated using free flow speeds. Specifically, weekday evening hours saw a 42 % drop in accessibility due to reduced speeds, particularly around downtown Denver. Across the Denver metro region, approximately half as many opportunities and jobs are accessible in under 20 min by car during the evening peak period relative to free flow conditions. These findings underscore the importance of using congestion-adjusted operating speeds rather than speed limits in accessibility calculations, as reliance on speed limits can substantially overestimate energy-efficient drive accessibility in large, car-centric cities susceptible to significant congestion. The methodology presented here could further enrich OSM network data, making them useful for an even broader range of transportation applications.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"8 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Telework frequency and travel behaviour during the later stages of the COVID-19 pandemic. A study across different Metropolitan Areas: Lisbon, Istanbul, and Porto Alegre","authors":"Laísa Braga Kappler, João de Abreu e Silva","doi":"10.1016/j.jtrangeo.2024.104102","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104102","url":null,"abstract":"Several social distancing measures were adopted during the pandemic (including curfews and mandatory telework) that resulted in substantial changes in travel patterns. Although several studies show that telework does not reduce travel, empirical evidence has been mixed. This work aims to study how telework adoption impacts the number of trips by mode in different metropolitan areas during the later stages of the COVID-19 pandemic. We applied online surveys focused on a 5-day travel-telework diary in the Lisbon (Portugal), Istanbul (Turkey), and Porto Alegre (Brazil) Metropolitan Areas in the early summer of 2021. We build a structural equation model (SEM) to study the influence of previous telework experience on perceptions about telework, and these on telework frequency and the number of trips by mode, and ultimately if is affected by commuting burden, sociodemographic characteristics, and attitudinal issues. The results indicate that more frequent full-day telework reduces the number of trips by all modes (but more by motorised modes) while teleworking part-day increases travel. Moreover, there is no evidence that teleworkers could be undertaking discretionary or maintenance trips from other household members. Finally, these results need to be analysed in the context of the pandemic since social distancing measures were in place.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"11 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding bus network delay propagation: Integration of causal inference and complex network theory","authors":"Qi Zhang, Weihua Wang, Jiani She, Zhenliang Ma","doi":"10.1016/j.jtrangeo.2024.104098","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104098","url":null,"abstract":"Bus transport, characterized by a complex network of routes and stops, frequently experiences delays that can affect the entire system's reliability, passenger satisfaction, and operational efficiency. Existing research on bus delay propagation predominantly focuses on the route level. They lack a broader network-level perspective, which is essential for fully understanding the complex interactions and delay propagation. Additionally, previous studies typically rely on correlation-based analysis, which may not adequately uncover the underlying causal mechanisms of bus delay propagation. To understand bus delay propagation in the Public Transport System (PTS), this study employs a causality-based model instead of traditional correlation-based analysis to identify causal relationships between bus stops. We introduce a time-series causal discovery model that integrates temporal and spatial features of stop delays to generate a delay propagation causal graph (DPCG). Then, complex network theory and metrics are used to perform topological analysis on the DPCG and identify key bus stops. The case study is conducted using real-time GTFS data from Stockholm, Sweden. The results indicate that stops with more connections significantly influence delay propagation, and the network displays a distinct community structure with mixed connectivity. Moreover, bus stops exhibit different delay propagation patterns during various time periods. During the morning peak, delays primarily propagate to stops in the inner city due to the commuting surge. In the evening peak, however, delays are more widely distributed across central and suburban areas, reflecting the diversity of after-work travel patterns. The study also reveals that delay propagation extends beyond a single route and affects multiple routes.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"281 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Active travel and subjective well-being in Temuco, Chile","authors":"Mohammad Paydar, Asal Kamani Fard","doi":"10.1016/j.jtrangeo.2024.104070","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104070","url":null,"abstract":"The improvement of active travel would contribute to increasing the minimum rate of physical activity; thus, improving public health. Although the importance of social and physical factors in promoting active travel has been highlighted, there have been few studies on how both simultaneously affect active travel, especially in South America. Furthermore, there is a lack of studies on subjective well-being in urban areas and its contributing factors, particularly in Chile's southern cities. This study aims to investigate the links between active travel and subjective well-being as well as the individual, social, and built environmental factors that are associated with these areas, in the medium-sized southern city of Temuco. A total of six neighborhoods were selected, and 782 respondents were determined by stratified random sampling. Both subjective and objective measurements of the built environment were used in the study. The objectives were examined using a quantitative method and two types of regression analysis, including hierarchical multiple regression and binary logistic regression. Despite a finding that attitude toward cycling has the highest level across all modes of transportation, just a small portion of respondents reported using bicycles for daily transport. The findings show that a variety of factors to active travel include household income, the number of people in the household, the availability of bicycles, attitude toward walking, attitude toward using a private car, social cohesion, role models, accessibility, and the density of all green spaces. In addition, age, private car ownership, belonging to an Indigenous group, employment status, lifestyles, social cohesion, accessibility, and street connectivity are all linked to subjective well-being. Urban policymakers may use these findings to promote subjective well-being and active travel in this city.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"26 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating scheduling of minibus taxis in South Africa's eventual electric paratransit","authors":"J. Wust, J. Bekker, M.J. Booysen","doi":"10.1016/j.jtrangeo.2024.104093","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104093","url":null,"abstract":"The predominant mode of public transport in South Africa originates from the informal sector, specifically “paratransit”. Vehicles carry up to 23 passengers and are still propelled by internal combustion engines. We investigate the feasibility of using electric vehicles without negating the loss of opportunities by drivers and owners. We propose that scheduling of the electric vehicles is one important cornerstone towards electrification. We developed a fast-executing heuristic scheduling algorithm that allows for multiple vehicle depots in the transport network; simultaneous electric and internal combustion engine vehicle deployment; determining the number of charging stations; partial charging; and scheduled charging with intermittent electricity supply. The scheduling algorithm achieves the minimum number of vehicles to execute the passenger demand in shorter total distances, outperforming current approaches. The algorithm demonstrated multi-objective optimisation by minimising the vehicles, the number of charging stations, and the average trip delays of a schedule.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"29 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of shipping activities on air quality and residents' health in China's port cities","authors":"Ling Sun, Jingyi Zhang, César Ducruet, Hidekazu Itoh, Xiangqi Liu","doi":"10.1016/j.jtrangeo.2024.104099","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104099","url":null,"abstract":"Shipping activities emit pollutants such as NOX, SOX, and PM, which are detrimental to air quality and to the health of local residents. As one of the major shipping nations, China's population and port-related industries concentrate in coastal areas. However, an interesting phenomenon is that the average life expectancy of coastal port cities in China has not significantly decreased in the past few decades, but has instead shown an upward trend, and often higher than that of non-port cities. To explain this, this paper uses panel data from 36 port cities in China from 2001 to 2019. The relationship between shipping activities, air quality, and average life expectancy is investigated through a nonlinear mediation effect model, which is used to study the impact of shipping on health, as well as the mediating role of air quality. Main results underline that except for average turnaround time, other indicators representing shipping intensity are positively correlated with air quality index and average life expectancy, indicating that the economic benefits of ports are closely related to their operational efficiency. Shipping activities have a significant negative impact on the health level of port cities. This impact is influenced by the mediating variable of air quality and has a partial mediating effect. However, the impact of air quality on health presents a complex nonlinear relationship, with an inverted N-shaped curve, and the two inflection points are about 68 and 120 respectively. Our research provides guidance for the sustainable development of port cities, in order to achieve the balance between shipping activities and environment and health.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"10 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Data-driven approach for assessing the impact of newly developed cycling infrastructure on cyclists' route choice","authors":"H. Tera, A. Hadachi, M. Pourmoradnasseri","doi":"10.1016/j.jtrangeo.2024.104094","DOIUrl":"https://doi.org/10.1016/j.jtrangeo.2024.104094","url":null,"abstract":"Developing safe and efficient cycling networks is a vital part of creating more bike-friendly and, thus, more sustainable communities. To promote cycling effectively, continuously improving and expanding the cycling network is important. Yet, understanding and measuring the impact of newly developed cycling infrastructure is not always a straightforward task, which is often performed using limited-scope surveys or simulations. The present study aims to present a data-driven method for estimating the impact of recently developed links in the cycling network by utilizing public bicycle sharing (PBS) data. The case of Tartu, Estonia, is examined using PBS data from three consecutive years to measure pre-post change in the utilization of street segments with newly built cycling infrastructure. Bicycle-sharing trips that make use of one of these segments are extracted, and various metrics are calculated and compared. Additionally, novel metrics for measuring the impact of new developments in cycling network are presented. Specific examples of significant shifts in route choice are detected and visualized. The results indicate that the share of PBS trips that employ any of the newly improved street segments has increased compared to the pre-construction period. This study demonstrates how public bicycle sharing data can be effectively used to assess the impact of infrastructure on cyclists' route choice, and presents specific findings in the case of Tartu.","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"75 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}