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Visual clustering of urban environments: Associations with household and travel characteristics 城市环境的视觉聚类:与家庭和旅行特征的关联
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2026-01-08 DOI: 10.1016/j.jtrangeo.2025.104546
Zeyu Wang , Yingjie Liu , Don MacKenzie
This study explores the relationship between the built environment and travel behaviors, emphasizing eye-level visual features and subjective experiences often overlooked in traditional metrics. Using the Semantic-SAM image segmentation model and machine learning, Seattle’s built environment was categorized into three visually distinct clusters based on time series street view imagery collected from 2017 to 2021. Integrating these clusters with three corresponding waves of Puget Sound Travel Surveys revealed clear links between built environments, travel modes, vehicle use, and equity. The findings demonstrate how visually distinct environments shape travel behavior and household changes, emphasizing the possible effect of urban design and infrastructures provided. While Seattle has made strides in creating walkable, transit-accessible neighborhoods, challenges such as equity and automobile dependence remain. This study provides the possibility of complementing traditional built environment metrics with imagery data.
本研究探讨了建筑环境与旅行行为之间的关系,强调了在传统度量中经常被忽视的视觉特征和主观体验。使用Semantic-SAM图像分割模型和机器学习,基于2017年至2021年收集的时间序列街景图像,将西雅图的建筑环境分为三个视觉上不同的集群。将这些集群与普吉特海湾旅游调查的三个相应波相结合,揭示了建筑环境、旅行模式、车辆使用和公平性之间的清晰联系。研究结果表明,视觉上不同的环境如何影响旅行行为和家庭变化,并强调了城市设计和所提供的基础设施的可能影响。虽然西雅图在创建适合步行、交通便利的社区方面取得了长足进步,但公平性和对汽车的依赖等挑战仍然存在。这项研究提供了用图像数据补充传统建筑环境指标的可能性。
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引用次数: 0
Advancing unpaved road assessment in Africa: Leveraging multimodal machine learning and large language-and-vision assistants across satellite imagery resolutions 推进非洲未铺砌道路评估:利用多模式机器学习和跨卫星图像分辨率的大型语言和视觉助手
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2026-01-08 DOI: 10.1016/j.jtrangeo.2025.104525
Zhao Wang , Chunlei Xin , Robin Workman , Hang Hu , Xinyuan Yu , Yuxin Tian , Robin Lovelace , Jiupeng Zhang , Haibo Chen
Over 53 % of African road network is unpaved, yet systematic monitoring remains limited. This study introduces a cost-effective machine learning (ML) solution to help local authorities monitor and plan road maintenance. Building on earlier work using high-resolution satellite imagery in Tanzania, the analysis extends to Madagascar, incorporating medium- and low-resolution imagery to reduce costs. Two distinct methodologies were evaluated: traditional ML and multimodal ML. The multimodal ML model achieves 93.2 % accuracy with high-resolution imagery and maintains satisfactory performance with medium (84.0 %) and low-resolution (85.3 %) imagery, aided by transfer learning. The framework demonstrates robust cross-resolution performance across Tanzania and Madagascar contexts. Additionally, a pilot study explored a fine-tuned Large Language-and-Vision Assistant (LLaVA) model, which demonstrated potential for natural language-based condition reporting and maintenance recommendations, offering an interpretable alternative to quantitative classification outputs. Whilst LLaVA currently exhibits lower classification accuracy than the multimodal ML model, multi-turn conversational approaches show promise for enhancing performance whilst maintaining natural language interpretability. This study contributes to Sustainable Development Goal 9.1 by delivering a scalable, affordable strategy to support resilient infrastructure and economic development in low-income regions.
超过53%的非洲公路网是未铺设的,但系统监测仍然有限。本研究介绍了一种具有成本效益的机器学习(ML)解决方案,以帮助地方当局监控和规划道路维护。在坦桑尼亚使用高分辨率卫星图像的早期工作的基础上,该分析扩展到马达加斯加,结合了中分辨率和低分辨率图像以降低成本。我们评估了两种不同的方法:传统ML和多模态ML。在迁移学习的帮助下,多模态ML模型在高分辨率图像上达到了93.2%的准确率,在中分辨率(84.0%)和低分辨率(85.3%)图像上保持了令人满意的性能。该框架在坦桑尼亚和马达加斯加的情况下显示了强大的跨分辨率性能。此外,一项试点研究探索了一个经过微调的大型语言和视觉助理(LLaVA)模型,该模型展示了基于自然语言的状态报告和维护建议的潜力,为定量分类输出提供了可解释的替代方案。虽然LLaVA目前的分类精度低于多模态ML模型,但多回合对话方法有望在保持自然语言可解释性的同时提高性能。本研究通过提供可扩展、可负担的战略,支持低收入地区的弹性基础设施和经济发展,为实现可持续发展目标9.1做出贡献。
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引用次数: 0
Spatial differences in PEV demand: The case of Denmark PEV需求的空间差异:以丹麦为例
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2026-01-07 DOI: 10.1016/j.jtrangeo.2025.104538
Stefan E. Mabit , David S. Bunch , Anders F. Jensen , Jeppe Rich
The demand for plug-in electric vehicles (PEVs) has increased in many countries, and many studies have focused on the influence of attributes and socio-economic variables. However, only a few studies have analysed the spatial heterogeneity in uptake within a country. In this study, we analyse demand variation across regions, using Denmark as a case example. The analysis applies mixed logit models and hybrid choice models to investigate the extent to which charging access, socio-economic variables, and attitudes can explain spatial differences in demand, using stated preference data from a large Danish consumer survey. Our results show that some socio-economic variables, especially education and gender, have an effect, however, the main factor appears to be attitudes linked to perception differences, which weakens the direct effect of education. When we account for these factors, the coefficients for regional dummy variables become much smaller and mostly insignificant. These results suggest that, given similar regional charging networks, it may be possible to achieve more uniform demand by removing perception barriers related to PEVs.
插电式电动汽车(pev)在许多国家的需求都在增加,许多研究都集中在属性和社会经济变量的影响上。然而,只有少数研究分析了一个国家内吸收的空间异质性。在本研究中,我们分析了不同地区的需求变化,并以丹麦为例。该分析采用混合logit模型和混合选择模型来调查收费渠道、社会经济变量和态度在多大程度上可以解释需求的空间差异,使用来自丹麦大型消费者调查的陈述偏好数据。我们的研究结果表明,一些社会经济变量,特别是教育和性别,有影响,然而,主要因素似乎是与感知差异相关的态度,这削弱了教育的直接影响。当我们考虑到这些因素时,区域虚拟变量的系数变得小得多,而且大多不显著。这些结果表明,在相似的区域充电网络下,通过消除与电动汽车相关的感知障碍,可能实现更统一的需求。
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引用次数: 0
Probabilistic space-time prisms in road networks with travel time uncertainties 具有旅行时间不确定性的路网中的概率时空棱镜
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2026-01-05 DOI: 10.1016/j.jtrangeo.2025.104544
Hui-Ping Chen , Zhi-Chun Li , Bi Yu Chen
The space-time prism (STP) is a core concept in time geography for scheduling flexible activities given various space-time constraints. However, the classical STP model overlooks travel time uncertainties pervasive in real-world road networks. In this study, we propose a novel model, probabilistic STP, for scheduling flexible activities under travel time uncertainties. This model explicitly quantifies heterogeneous probabilities (or reliabilities) of completing flexible activities at space-time locations within the STP. Solution algorithms are developed to effectively construct probabilistic STPs in real-world road networks. The proposed model is further applied to evaluate accessibility under travel time uncertainties. Two accessibility measures are introduced by explicitly setting distinctive weightings to facilities based on their activity completion probabilities. A comprehensive case study is carried out by using real-world travel time distributions. Results of the case study show the effectiveness of the probabilistic STP model in the evaluations of accessibility to supermarkets.
时空棱镜(STP)是时间地理学中的一个核心概念,用于在各种时空约束下调度柔性活动。然而,经典STP模型忽略了现实世界道路网络中普遍存在的旅行时间不确定性。在此研究中,我们提出了一个新的模型,即概率STP,用于在旅行时间不确定的情况下调度灵活的活动。该模型明确量化了在STP的时空位置完成灵活活动的异构概率(或可靠性)。求解算法的发展,有效地构建概率stp在现实世界的道路网络。将该模型进一步应用于出行时间不确定条件下的可达性评价。通过根据活动完成概率明确地为设施设置不同的权重,引入了两种可达性度量。通过使用真实世界的旅行时间分布进行了全面的案例研究。实例研究结果表明,概率STP模型在超市可达性评价中的有效性。
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引用次数: 0
The impact of Russia-Ukraine war on international maritime petroleum trade and tanker fleet productivity 俄乌战争对国际海上石油贸易和油轮船队生产力的影响
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2026-01-02 DOI: 10.1016/j.jtrangeo.2025.104543
Haiying Jia , Zhenming Wu
The geopolitical conflict between Russia and Ukraine represents one of the most significant geopolitical disruptions in recent decades, profoundly affecting international petroleum trade flows and tanker fleet operation patterns. This study investigates the impact of this geopolitical event on maritime petroleum trade dynamics by analyzing tanker movement data obtained from the Automatic Identification System (AIS) from 2018 to 2023. Through a systematic evaluation, this study quantifies transformations in global maritime petroleum trade structures and tanker fleet productivity, measured by tonne-miles per deadweight. The findings indicate that, despite sanctions, Russian petroleum exports maintained volumetric resilience, there was a considerable market redistribution from European destinations to Asian, African, and South American markets. This restructuring led to notable shifts in fleet productivity, with significant differences across vessel classes and trade lanes. The findings provide critical implications for asset investment decisions, vessel operation strategies, and the development of energy trade networks.
俄罗斯和乌克兰之间的地缘政治冲突是近几十年来最严重的地缘政治中断之一,深刻影响了国际石油贸易流动和油轮船队的运作模式。本研究通过分析2018年至2023年自动识别系统(AIS)获取的油轮运动数据,探讨这一地缘政治事件对海上石油贸易动态的影响。通过系统评估,本研究量化了全球海上石油贸易结构和油轮船队生产力的变化,以每载重吨英里为单位。研究结果表明,尽管受到制裁,俄罗斯的石油出口仍保持了弹性,从欧洲目的地到亚洲、非洲和南美市场的市场再分配相当大。这种重组导致了船队生产力的显著变化,不同船级和贸易航线之间存在显著差异。研究结果对资产投资决策、船舶运营策略和能源贸易网络的发展具有重要意义。
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引用次数: 0
Interrelationships between TOD, perceived gentrification, neighborhood satisfaction and sense of community: A case study in Nanjing, China TOD、感知绅化、邻里满意度和社区意识之间的相互关系:以南京为例
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-31 DOI: 10.1016/j.jtrangeo.2025.104545
Yu Huang , Shanqi Zhang , Yang Ju , Kangxu Wang
Rapid transit and transit-oriented development (TOD) have been global strategies for sustainable urban development. However, growing concerns have emerged regarding transit-induced gentrification (TIG) and its impact on residents' changing perceptions of neighborhoods. The interrelationships between TOD and perceived gentrification, as well as their effects on neighborhood satisfaction and sense of community, remain understudied. This study aims to bridge this gap by analyzing surveys from residents living near three metro stations along the new Metro Line 5 in Nanjing, China. Utilizing confirmatory factor analysis (CFA) and structural equation modeling (SEM), we find that: (1) TOD residents were not statistically associated with higher levels of perceived gentrification; (2) the presence of metro was not significantly linked to sense of community, but neighborhood satisfaction regarding transit access and neighborhood amenities; (3) residents with higher levels of perceived gentrification also reported greater neighborhood satisfaction and a stronger sense of community; and (4) renters exhibited lower levels of perceived gentrification and sense of community. This study advances the understanding of transit-induced gentrification by providing empirical evidence from China, offering recommendations for TOD policies that promote inclusive and sustainable community development.
快速交通和公交导向发展(TOD)已成为全球城市可持续发展战略。然而,越来越多的人开始关注公交诱导的中产阶级化(TIG)及其对居民对社区不断变化的看法的影响。TOD与感知的中产阶级化之间的相互关系,以及它们对社区满意度和社区意识的影响,仍未得到充分研究。本研究旨在通过分析对居住在中国南京新地铁5号线沿线三个地铁站附近的居民的调查来弥合这一差距。利用验证性因子分析(CFA)和结构方程模型(SEM),我们发现:(1)TOD居民与更高水平的感知中产阶级化没有统计学相关性;(2)地铁的存在对社区意识的影响不显著,但对交通便捷性和社区设施满意度的影响显著;(3)中产阶级化程度越高的居民对社区满意度越高,社区意识越强;(4)租房者对中产阶级化和社区意识的感知水平较低。本研究通过提供来自中国的经验证据,促进了对公交诱导的中产阶级化的理解,并为促进包容性和可持续社区发展的TOD政策提供建议。
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引用次数: 0
Dependent in their own way: Spatial analysis of car dependence patterns in Lombardy region using bivariate classification 以自己的方式依赖:伦巴第地区汽车依赖模式的二元分类空间分析
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-31 DOI: 10.1016/j.jtrangeo.2025.104534
Jaime Sierra Muñoz , Paola Pucci , Louison Duboz , Biagio Ciuffo
Car dependence is an increasing concern in the current urban and territorial challenges, generating significant environmental and social impacts. As a complex, multidimensional, and processual phenomenon, it requires analysis through interrelated, place-based indicators that reveal the driving forces behind its various dimensions. While existing literature offers a solid framework of predominantly quantitative approaches, it also highlights the need for interpretative methods that consider socio-spatial contexts, the system of preferences, and opportunities. To deal with the processual and multi-dimensional nature of car dependence, this paper explores the drivers and outcomes of car dependence across diverse socio-spatial settings in the Lombardy region (Italy) through two key concepts: car dependence level, which measures the alignment between driver and outcome variables (e.g., low density with high car use); and car dependence dissonance, which captures deviations from expected literature patterns. Using bivariate classification and spatial analysis of its maps, the study identifies the regional and multidimensional nature of car dependence, followed by a cluster analysis that categorises different territorial dynamics. The findings show that while major urban centres tend to display consistent low car dependence, scattered or peripheral zones present greater heterogeneity, challenging common assumptions and suggesting the need for nuanced, context-sensitive mobility strategies.
在当前的城市和领土挑战中,对汽车的依赖日益受到关注,产生了重大的环境和社会影响。作为一个复杂的、多维的和进程现象,它需要通过相互关联的、基于地点的指标来分析,以揭示其各个方面背后的驱动力。虽然现有文献提供了以定量方法为主的坚实框架,但它也强调了考虑社会空间背景、偏好系统和机会的解释性方法的必要性。为了处理汽车依赖的过程性和多维性,本文通过两个关键概念探讨了伦巴第地区(意大利)不同社会空间环境下汽车依赖的驱动因素和结果:汽车依赖水平,衡量驱动因素和结果变量之间的一致性(例如,低密度和高汽车使用率);以及汽车依赖失调,它捕获了与预期文献模式的偏差。通过对地图的二元分类和空间分析,该研究确定了汽车依赖的区域性和多维性,随后进行了聚类分析,对不同的地域动态进行了分类。研究结果表明,虽然主要城市中心往往表现出一贯的低汽车依赖,但分散或周边地区呈现出更大的异质性,挑战了普遍的假设,并表明需要细致入微的、环境敏感的移动策略。
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引用次数: 0
Using mobile phone data to explore gender and age gaps in urban mobility. Revealing the changes after COVID-19 in the metropolitan region of Madrid (Spain) 利用手机数据探索城市交通中的性别和年龄差距。揭示新冠肺炎后马德里大都市区(西班牙)的变化
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-26 DOI: 10.1016/j.jtrangeo.2025.104506
Yeray Cara-Santana, Borja Moya-Gómez, Juan Carlos García-Palomares
Gender differences in mobility are common in cities but analyzing them using data from travel surveys is limited by the sample size and the lack of detailed spatial and temporal patterns for different population groups. Big data sources, such as mobile phone data, offer almost ubiquitous data of daily mobility patterns and their changes while including basic socio-demographic characteristics. This paper studies differences in urban mobility from a gender and age perspective following the COVID-19 pandemic, comparing daily patterns of February 2020 and 2023 for the metropolitan region of Madrid. Urban activity, changes in mobility, and the gender gap are analyzed using different temporal and spatial aggregations based on Transport Analysis Zones (TAZ) and travel flows. The results reflect that the gender gap in trips decreases while remaining for the distance travelled for all age groups after COVID-19. Temporal patterns changed with more trips in the daytime and fewer at night, while the distance travelled evolves towards shorter journeys. Although women still make fewer trips and shorter distances, young women have reversed the gender gap between 2020 and 2023. This paper highlights how gender and age are longitudinal and transversal factors shaping mobility over an individual's life course and how COVID-19 seems to have accelerated pre-existing changing trends in urban mobility. Understanding the nature and relevance of the social dynamics and the differences between each population group is essential for supporting the study of urban segregation and helping authorities manage mobility in the territory.
流动性的性别差异在城市中很常见,但使用旅行调查数据进行分析受到样本量的限制,并且缺乏不同人口群体的详细时空模式。大数据来源,如手机数据,提供了几乎无处不在的日常流动模式及其变化的数据,同时包括基本的社会人口特征。本文从性别和年龄的角度研究了2019冠状病毒病大流行后城市流动性的差异,比较了马德里大都市区2020年2月和2023年2月的日常模式。利用基于交通分析区(TAZ)和交通流量的不同时空聚集,分析了城市活动、流动性变化和性别差距。结果表明,2019冠状病毒病后,所有年龄组的出行距离的性别差距都有所缩小。时间模式随着白天旅行次数的增加和夜间旅行次数的减少而改变,而旅行的距离则朝着更短的旅行方向发展。尽管女性出行次数仍然较少,距离也更短,但在2020年至2023年期间,年轻女性扭转了性别差距。本文重点介绍了性别和年龄如何成为影响个人生命过程中流动性的纵向和横向因素,以及COVID-19如何加速了城市流动性中已有的变化趋势。了解社会动态的性质和相关性以及每个人口群体之间的差异对于支持研究城市隔离和帮助当局管理领土内的流动至关重要。
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引用次数: 0
An asynchronous co-evolution: The spatiotemporal dynamics of rail transit and urban structure in the Munich Metropolitan Area (1975–2020) 非同步协同演化:慕尼黑都市圈轨道交通与城市结构时空动态研究(1975-2020)
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-26 DOI: 10.1016/j.jtrangeo.2025.104537
Yin Dou , Xinyi Wang , Rolf Moeckel
The relationship between urban rail transit networks (URTN) and urban spatial structure (USS) is foundational to transport geography and urban planning. However, this relationship is often viewed through a static lens that overlooks the complex, long-term process of their interaction. This study challenges the conventional paradigm of transit ‘guiding’ development by proposing and empirically demonstrating a model of ‘asynchronous co-evolution,’ where infrastructure and urban form mutually shape each other across time and space, often with significant lags. We investigate this process through a 45-year analysis (1975–2020) of the Munich Metropolitan Area (MMA), a mature transit metropolis. Using complex network analysis for station centrality and socioeconomic data for population and building volume, we assess the spatiotemporal dynamics of their coupling. Our findings reveal a long-term trajectory from corridor-led suburbanization to networked urban renaissance, a process characterized by persistent discoordination. Crucially, we identify a stark divergence in development logic between the urban core (within 10 km) and the periphery (beyond 10 km); the latter exhibits characteristics of Transit-Adjacent Development (TAD) driven by car dependency, rather than genuine Transit-Oriented Development (TOD). By framing the URTN-USS relationship as a dynamic and spatially contingent process, this research offers a more nuanced understanding of TOD and provides critical insights for adaptive planning in evolving metropolitan regions.
城市轨道交通网络(URTN)与城市空间结构(USS)的关系是交通地理学和城市规划的基础。然而,这种关系通常是通过静态的视角来看待的,忽视了它们相互作用的复杂、长期的过程。本研究挑战了传统的交通“引导”发展模式,提出并实证证明了一种“异步协同进化”模式,其中基础设施和城市形态在时间和空间上相互影响,通常存在显著滞后。我们通过对慕尼黑大都会区(MMA) 45年(1975-2020)的分析来研究这一过程,慕尼黑大都会区是一个成熟的交通大都市。利用复杂网络分析的站点中心性和人口和建筑体量的社会经济数据,我们评估了它们耦合的时空动态。我们的研究结果揭示了从走廊主导的郊区化到网络化城市复兴的长期轨迹,这一过程以持续的不协调为特征。至关重要的是,我们确定了城市核心(10公里以内)和外围(10公里以外)之间发展逻辑的明显分歧;后者表现出依赖汽车驱动的交通邻近发展(TAD)特征,而不是真正的交通导向发展(TOD)。通过将URTN-USS关系构建为一个动态和空间偶然过程,本研究提供了对TOD的更细致的理解,并为不断发展的大都市地区的适应性规划提供了重要见解。
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引用次数: 0
The impact of geographical context on Bikeability perception: A gender-difference analysis 地理环境对可骑自行车认知的影响:性别差异分析
IF 6.3 2区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-26 DOI: 10.1016/j.jtrangeo.2025.104528
Francesco De Fabiis, Marco Baldini, Pierluigi Coppola
Bikeability, defined as the perceived quality of a bike trip, is gaining increasing attention due to the growing focus on active mobility in sustainable urban mobility plans. The higher the bikeability, the more attractive cycling becomes for short- to medium-distance urban travels. However, this relationship may depend on user profiles, trip characteristics, and the geographical context. This study explores these factors from a gender perspective (men and women) with a focus on context: large, medium and small cities; urban, extra-urban, or dedicated bike paths. To this aim, revealed preference data from the Lombardy Region (sample size: 745, observations: 1017) were analysed using Hybrid Choice Models. The results indicate that bikeability is influenced by four latent constructs, namely the perception of ‘Conflict with Other Vehicles’, ‘Quality of Urban Space’, ‘Quality of Bike Path’, and ‘Physical and Mental Fatigue’, alongside variables such as ‘Presence of Other Cyclists’ and ‘Ambient Temperature’. Gender differences emerge in evaluating these constructs. For instance, women cycling in highly populated cities perceive a higher level of conflict with other vehicles compared to both men and women cycling in less populated areas. The findings provide insights for tailored policies that take gender differences and geographical contexts into account to enhance overall bikeability levels.
由于在可持续城市交通规划中越来越多地关注主动交通,可骑自行车性被定义为自行车旅行的感知质量,因此越来越受到关注。自行车可骑性越高,对中短途城市出行就越有吸引力。然而,这种关系可能取决于用户概况、旅行特征和地理环境。本研究从性别角度(男性和女性)探讨了这些因素,重点是背景:大、中、小城市;城市、城市外或专用自行车道。为此,使用混合选择模型分析了伦巴第地区(样本量:745,观察值:1017)的显示偏好数据。结果表明,骑行性受“与其他车辆冲突”、“城市空间质量”、“自行车道质量”和“身心疲劳”感知以及“是否有其他骑行者”和“环境温度”等变量的影响。性别差异出现在评估这些构念。例如,在人口密集的城市骑自行车的女性与在人口较少的地区骑自行车的男性和女性相比,认为与其他车辆发生冲突的程度更高。研究结果为制定有针对性的政策提供了见解,这些政策应考虑到性别差异和地理环境,以提高整体骑自行车水平。
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引用次数: 0
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Journal of Transport Geography
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