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inevitability of automobility: How private car use is perpetuated in a greenfield housing estate 汽车出行的必然性:私人汽车的使用是如何在绿地住宅区延续下去的
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-04-26 DOI: 10.5198/jtlu.2022.2091
J. Kent
Ongoing advances in technologies of connectivity have strengthened our capacity to envision urban environments less dominated by private car use. Yet many cities remain attached to, and defined by, the automobile. In challenging this status quo, we must understand the complex and varied ways private car use is reinforced in different urban environments. This paper provides such an understanding in the context of a low-density, and currently car-dependent, city. It presents a detailed analysis of the system of automobility to demonstrate the way private-car use is unintentionally perpetuated through contemporary practices of planning, developing and inhabiting cities. A newly constructed suburb in Sydney, Australia, provides the case for analysis. The suburb—Oran Park—is a master-planned estate intentionally designed to encourage alternative transport modes that is rendered ostensibly car-dependent as a result of a confluence of historical and contemporary structural and practical influences. The paper combines a detailed examination of the planning, transport and land-use context of the suburb with survey data from 300 of its residents. The paper’s novel contribution is to analyze these data sources using a social practice approach. The analysis lays bare the inevitability of automobility’s reproduction in the estate—describing the litany of elements that are both infrastructural and cultural and that, in orchestration, reproduce private car use. These elements are deconstructed to inform future challenges to the hegemony of the private car.
互联技术的不断进步增强了我们的能力,使我们能够设想私家车在城市环境中的主导地位有所降低。然而,许多城市仍然依附于汽车,并被汽车所定义。在挑战这一现状时,我们必须了解在不同的城市环境中加强私家车使用的复杂多样的方式。本文在低密度、目前依赖汽车的城市背景下提供了这样的理解。它对汽车交通系统进行了详细的分析,以证明私家车的使用是如何在当代城市规划、发展和居住的实践中无意识地延续下去的。澳大利亚悉尼一个新建的郊区为分析提供了案例。郊区的奥兰公园是一个总体规划的住宅区,旨在鼓励替代交通方式,由于历史和当代结构和实际影响的融合,表面上看起来依赖于汽车。本文结合了对郊区规划、交通和土地利用背景的详细检查,以及对300名居民的调查数据。本文的新颖贡献是使用社会实践方法分析这些数据源。该分析揭示了汽车在该地区再现的必然性——描述了一系列基础设施和文化因素,这些因素在精心安排下再现了私家车的使用。这些元素被解构,以告知未来对私家车霸权的挑战。
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引用次数: 0
Planning for cycling in local government: Insights from national surveys in Australia and New Zealand 地方政府的自行车规划:来自澳大利亚和新西兰全国调查的见解
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-04-15 DOI: 10.5198/jtlu.2022.1970
Courtney Babb, Sam McLeod, Conor Noone
Despite a broad consensus that cycling can address a range of transportation issues, many countries have struggled to institute measures to increase cycling participation. Even for cities that have achieved marked progress, there remains a gap in making cycling a truly normative mode of transportation. The practical problem of translating research and converting policy vision into broad-based cycling participation has become an increasingly central focus of international cycling scholarship. To examine the challenges of practically planning for cycling, we focus on the role of local government and report on a survey of all urban and major regional local governments in Australia and New Zealand. By analyzing results across the two countries, we diagnose challenges faced by practitioners in implementing measures to support cycling. Key findings suggest there is support among local government officers and stakeholders for cycling to play an increased role in daily transportation, yet this support is much more mixed at the implementation stage of cycling plans, policies, and infrastructure projects. These findings indicate a pressing need to better equip local government practitioners with tools and knowledge to overcome barriers to providing for cycling, particularly in increasingly politicized and complex contexts.
尽管人们普遍认为骑自行车可以解决一系列交通问题,但许多国家一直在努力制定措施来增加骑自行车的参与。即使是那些已经取得显著进步的城市,在使骑车成为一种真正规范的交通方式方面仍然存在差距。将研究成果和政策愿景转化为广泛的自行车参与的实际问题已成为国际自行车学术日益关注的焦点。为了研究实际规划自行车的挑战,我们将重点放在地方政府的作用上,并报告了一份对澳大利亚和新西兰所有城市和主要地区地方政府的调查。通过分析两国的结果,我们诊断了从业者在实施支持自行车运动的措施时所面临的挑战。主要调查结果表明,地方政府官员和利益相关者支持自行车在日常交通中发挥更大的作用,但在自行车计划、政策和基础设施项目的实施阶段,这种支持要复杂得多。这些发现表明,迫切需要更好地为地方政府从业人员提供工具和知识,以克服提供自行车的障碍,特别是在日益政治化和复杂的背景下。
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引用次数: 0
Mapping opportunity in time and space: An inductive approach 时间和空间的机会映射:归纳方法
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-03-20 DOI: 10.5198/jtlu.2022.1903
David Hoelzel, J. Scheiner
Several authors delineate “geographies of opportunity,” which are assumed to influence individual life courses. In transport geography and related subjects, “opportunity” is a term that is frequently used to circumscribe dynamics of spatial and social mobility. However, previous approaches to opportunity usually apply deductive reasoning in such a way that opportunity represents a local feature whose functional utility impacts individual lives. Such approaches are inadequate for the analysis of individual life courses, as neither the emergence of opportunity nor its meaning for individual motives is sufficiently incorporated. Such neglect may lead to insufficient or even incorrect conclusions about the relation of space, mobility and the life course, because a concept for systematic mappings of opportunities in both individual life courses and space has not yet been developed. This paper aims to reconceptualize opportunity as a personally and socially experienced interrelation between agents and their socio-spatial environment with beneficial outcomes for the respective life courses. With regard to mapping opportunity, pockets of local order and occasions are presented as mappable spatiotemporal entities. Occasions are sections in timespace, which are unique and meaningful to the development of the individual life course. Finally, we discuss implications for empirical application, future research, planning and policy.
一些作者描述了“机会的地理位置”,认为它会影响个人的人生历程。在交通地理学和相关学科中,“机会”是一个经常被用来界定空间和社会流动动态的术语。然而,以前的机会方法通常采用演绎推理的方式,即机会代表了其功能效用影响个人生活的局部特征。这种方法不足以分析个人的生命历程,因为机会的出现及其对个人动机的意义都没有得到充分的考虑。这种忽视可能导致对空间、流动性和生命历程之间的关系得出不充分甚至不正确的结论,因为还没有形成一个系统地描绘个人生命历程和空间中的机会的概念。本文旨在将机会重新定义为个体与其社会空间环境之间的个人和社会经验相互关系,并为各自的生命历程带来有益的结果。关于映射机会,局部秩序和场合的口袋被呈现为可映射的时空实体。场合是时空中的部分,对个体生命历程的发展具有独特的意义。最后,我们讨论了对实证应用、未来研究、规划和政策的启示。
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引用次数: 0
Not enough parking, you say? A study of garage use and parking supply for single-family homes in Sacramento and implications for ADUs 你是说没有足够的停车位?萨克拉门托独户住宅车库使用和停车供应的研究及其对adu的影响
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-02-25 DOI: 10.5198/jtlu.2022.1947
J. Volker, Calvin G. Thigpen
Accessory dwelling units (ADUs) are increasingly touted as part of the solution to the intransigent housing shortages facing many metropolitan areas across the United States. But numerous barriers to ADU development persist, including opposition by neighboring households. One persistent question is whether ADU residents would overwhelm on-street parking in the predominately single-family neighborhoods where ADUs are typically built. That question is difficult to answer because there is a surprising dearth of research on the effective parking supply in single-family neighborhoods. We use a survey of homeowners in Sacramento, California, to investigate the supply and sufficiency of residential parking for single-family homes, including how households actually use their garages, and help answer the ADU parking conundrum. After estimating and accounting for actual garage use, we find that more than 75% of households have enough off-street parking available to park all their vehicles. When we combine off-street and on-street parking supplies, we find that households have an average of 1.6 more parking spaces available to them than they have vehicles. That parking surplus is more than enough to accommodate the average ADU tenant and their vehicle, belying claims that ADUs will overwhelm existing parking supplies in single-family neighborhoods.
辅助住宅单元(adu)越来越被吹捧为解决美国许多大都市面临的顽固住房短缺问题的一部分。但ADU发展的诸多障碍依然存在,包括邻近家庭的反对。一个持续存在的问题是,ADU住户是否会挤占以独户为主的社区的路边停车位,而这些社区通常都会建造ADU。这个问题很难回答,因为关于单户社区有效停车供应的研究少得惊人。我们对加州萨克拉门托的房主进行了一项调查,以调查单户住宅停车位的供应和充足性,包括家庭如何实际使用他们的车库,并帮助回答ADU停车难题。在估算和计算实际车库使用情况后,我们发现超过75%的家庭有足够的路边停车位来停放他们所有的车辆。当我们将街道外和街道上的停车供应结合起来时,我们发现家庭的可用停车位平均比他们拥有的车辆多1.6个。这些多余的停车位足以容纳普通ADU租户和他们的车辆,这与ADU将压倒单户社区现有停车位供应的说法是不相符的。
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引用次数: 2
What the heck is a choice rider? A theoretical framework and empirical model 选择骑手到底是什么?一个理论框架和经验模型
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-02-25 DOI: 10.5198/jtlu.2022.2096
E. Guerra
As local, state, and federal agencies began investing substantial resources into subsidizing transit in the 1960s and ‘70s, public documents argued that transit agencies should focus on attracting choice riders instead of dependent riders, who have no alternatives and use transit regardless of service quality. After six decades, the definitions, uses, and implications of the terms choice and dependent rider have remained consistent in the academic and professional literature. These definitions, however, lack a strong theoretical grounding or empirical evidence to support them. Using travel diary data from the Philadelphia region, I estimate discrete choice models to identify choice riders, who I define as those who have close to a 50% probability of choosing between a car or transit for a given trip. The Philadelphia region, which has a diverse range of transit users and transit services, is an ideal place to develop and fit an empirical model of choice ridership. Attributes assumed to be associated with dependent riders, such as lack of a car, low income, and being a racial or ethnic minority, are much more prevalent among choice riders than the general metropolitan population. Choice riders are also diverse, with a mix of racial backgrounds, income levels, educational attainment, and access to private cars. Transit dependency, by contrast, is rare. The lowest and highest income residents generally only choose transit when service quality is high, and transit is cost and time competitive with the car.
随着地方、州和联邦机构在20世纪60年代和70年代开始投入大量资源补贴交通,公共文件认为,交通机构应该专注于吸引选择性乘客,而不是依赖性乘客,因为他们别无选择,无论服务质量如何都使用交通。60年后,术语选择和从属附加条款的定义、用法和含义在学术和专业文献中保持一致。然而,这些定义缺乏强有力的理论基础或经验证据来支持它们。使用费城地区的旅行日记数据,我估计了离散选择模型来识别选择乘客,我将他们定义为在给定的旅行中有接近50%的概率在汽车或交通工具之间做出选择的人。费城地区拥有各种各样的公交用户和公交服务,是开发和拟合选择乘客量实证模型的理想场所。被认为与依赖性骑手有关的特征,如无车、低收入、种族或少数民族,在选择骑手中比普通大都市人群更普遍。选择骑手也多种多样,包括种族背景、收入水平、教育程度和私家车使用情况。相比之下,对公交的依赖是罕见的。收入最低和最高的居民通常只有在服务质量高、交通成本和时间与汽车有竞争力的情况下才会选择公交。
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引用次数: 1
Traffic-land use compatibility and street design impacts of automated driving in Vienna, Austria 奥地利维也纳的交通用地兼容性和自动驾驶对街道设计的影响
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-02-20 DOI: 10.5198/jtlu.2022.2089
E. Bruck, A. Soteropoulos
The potential rise of automated vehicles (AVs) may significantly impact future traffic volumes, in turn affecting urban street designs and adjacent land use. While integrated studies on potential traffic and land-use changes due to AVs largely concern issues of location choice and changing settlement patterns, assessments of how AVs may influence the quality of streets depending on the requirements of adjacent land use remain scarce. This paper presents an integrated assessment of the urban effect of AVs on traffic and neighborhoods in Vienna. It provides a methodology to assess whether changing traffic volumes are compatible with the land use of a given neighborhood to approximate street space requirements for shared automated shuttles and to visualize possible trajectories of spatial transformation by considering local development goals. The results show that the opportunities to convert street space and the risks of environmental harm due to AVs will vary across neighborhoods and street typologies. It is crucial for policymakers and planners to consider such contextual differences to gain better insight into the functional requirements and urban consequences of AVs. This assessment aims to shed light on the possible trade-offs of a system change in favor of AVs to help evaluate adequate operational conditions and inform proactive traffic and urban design policies to harness possible implications.
自动驾驶汽车(AVs)的潜在增长可能会对未来的交通量产生重大影响,进而影响城市街道设计和邻近的土地使用。虽然对自动驾驶汽车可能导致的交通和土地利用变化的综合研究主要关注的是地点选择和定居模式的变化,但对自动驾驶汽车如何根据邻近土地利用的要求影响街道质量的评估仍然很少。本文提出了一个综合评估的城市影响的自动驾驶汽车对交通和社区在维也纳。它提供了一种方法来评估不断变化的交通量是否与给定社区的土地使用相兼容,以近似共享自动班车的街道空间需求,并通过考虑当地发展目标来可视化空间转换的可能轨迹。结果表明,自动驾驶汽车转化街道空间的机会和环境危害风险因社区和街道类型而异。对于政策制定者和规划者来说,考虑这种环境差异对于更好地了解自动驾驶汽车的功能需求和城市后果至关重要。该评估旨在揭示有利于自动驾驶汽车的系统变化的可能权衡,以帮助评估适当的操作条件,并为主动交通和城市设计政策提供信息,以利用可能的影响。
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引用次数: 2
Car dependency beyond land use: Can a standardized built environment indicator predict car use? 超越土地使用的汽车依赖:标准化建筑环境指标能否预测汽车使用?
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-02-20 DOI: 10.5198/jtlu.2022.2073
Eva Van Eenoo, K. Fransen, Kobe Boussauw
In June 2019, the government of the Flemish Region (Belgium) launched the “mobility score,” a standardized built environment indicator that informs citizens in Flanders about the walking or cycling accessibility from their dwelling to a range of basic amenities and public transport stops. The development of the mobility score was developed to be a tool to raise awareness of the environmental impact of travel. Against this backdrop, this paper assesses the extent to which the mobility score can predict car use and aims to contribute to the line of research that studies travel patterns in relation to accessibility, spatial context, and travel mode choice. Based on the data from the Flemish Travel Behavior Survey, we analyze the effect of the interaction between the built environment, frequency of car use and vehicle kilometers traveled. Our findings illustrate that frequent and intensive car use is not an exclusive feature of suburban and rural residents in Flanders, or of those who travel long distances. The outcomes show that the mobility score can predict the frequency of car travel but only in the inner city. As for other areas, travel behavior shows little variance among respondents. The presence of a company car in a household is a much stronger predictor of vehicle kilometers traveled than any other variable, including the built environment. Travel behavior turns toward car use once a household acquires a car, almost regardless of the type of neighborhoods where respondents live. In Flanders, policy has so far been directed more toward curbing car use than discouraging car ownership. Our findings suggest that it could be more effective to aim for the latter, as this prevents the development of a cycle of car-oriented behavior in the first place.
2019年6月,佛兰德地区(比利时)政府推出了“流动性评分”,这是一个标准化的建筑环境指标,向佛兰德斯的公民通报从住所到一系列基本设施和公共交通站点的步行或骑自行车的可达性。流动性评分的开发是为了提高人们对旅行对环境影响的认识。在此背景下,本文评估了出行得分在多大程度上可以预测汽车使用情况,并旨在为研究出行模式与可达性、空间背景和出行方式选择的关系做出贡献。基于佛兰德旅行行为调查的数据,我们分析了建筑环境、汽车使用频率和车辆行驶公里数之间的相互作用的影响。我们的研究结果表明,频繁和密集的汽车使用并不是佛兰德斯郊区和农村居民的独有特征,也不是那些长途旅行的人的独有特征。结果表明,出行得分可以预测汽车出行的频率,但仅限于内城。在其他方面,受访者的旅游行为差异不大。公司汽车在家庭中的存在比任何其他变量(包括建筑环境)都更能预测车辆行驶公里数。一旦一个家庭拥有一辆汽车,他们的出行行为就会转向汽车,几乎与受访者居住的社区类型无关。在佛兰德斯,到目前为止,政策更多地是针对限制汽车的使用,而不是鼓励拥有汽车。我们的研究结果表明,以后者为目标可能更有效,因为这首先可以防止以汽车为导向的行为循环的发展。
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引用次数: 5
Calculating place-based transit accessibility: Methods, tools and algorithmic dependence 计算基于地点的交通可达性:方法、工具和算法依赖
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-02-01 DOI: 10.5198/jtlu.2022.2012
Christopher D. Higgins, Matthew Palm, Amber D. DeJohn, Luna Xi, J. Vaughan, S. Farber, M. Widener, Eric Miller
To capture the complex relationships between transportation and land use, researchers and practitioners are increasingly using place-based measures of transportation accessibility to support a broad range of planning goals. This research reviews the state-of-the-art in applied transportation accessibility measurement and performs a comparative evaluation of software tools for calculating accessibility by walking and public transit including ArcGIS Pro, Emme, R5R, and OpenTripPlanner using R and Python, among others. Using a case study of Toronto, we specify both origin-based and regional-scale analysis scenarios and find significant differences in computation time and calculated accessibilities. While the calculated travel time matrices are highly correlated across tools, each tool produces different results for the same origin-destination pair. Comparisons of the estimated accessibilities also reveal evidence of spatial clustering in the ways paths are calculated by some tools relative to others at different locations around the city. With the growing emphasis on accessibility-based planning, analysts should approach the calculation of accessibility with care and recognize the potential for algorithmic dependence in their calculated accessibility results.
为了捕捉交通和土地利用之间的复杂关系,研究人员和从业者越来越多地使用基于地点的交通可达性指标来支持广泛的规划目标。本研究回顾了应用交通可达性测量的最新技术,并对计算步行和公共交通可达性的软件工具进行了比较评估,包括ArcGIS Pro、Emme、R5R和使用R和Python的OpenTripPlanner等。通过多伦多的案例研究,我们指定了基于原产地和区域规模的分析场景,并发现计算时间和计算可访问性存在显著差异。虽然计算出的旅行时间矩阵在工具之间高度相关,但对于同一始发地-目的地对,每个工具都会产生不同的结果。对估计可达性的比较还揭示了一些工具相对于城市不同位置的其他工具计算路径的方式存在空间聚类的证据。随着对基于可达性的规划的日益重视,分析人员应谨慎对待可达性的计算,并在其计算的可达性结果中认识到算法依赖性的潜力。
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引用次数: 6
Dockless bike-sharing’s impact on mode substitution and influential factors: Evidence from Beijing, China 无桩共享单车对模式替代的影响及影响因素:来自北京的证据
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-02-01 DOI: 10.5198/jtlu.2022.1983
Zheyan Chen, Dea van Lierop, D. Ettema
As a newly emerged bike-sharing system, dockless bike-sharing has the potential to positively influence urban mobility by encouraging active cycling and drawing users from car, public transit and walking. However, scant empirical research explores the extent to which dockless bike-sharing replaces other travel modes for different travel purposes. There is a lack of knowledge about how dockless bike-sharing users’ personal characteristics and neighborhood environment features influence their mode substitution behaviors. Using survey data collected from residents in Beijing and geodata of land use and public transit, we conduct four multinomial logistic models to explore potential mode-substitution behaviors influenced by dockless bike-sharing for four travel purposes: work or education commuting, sports and leisure, grocery shopping, and recreational activities such as shopping, eating and drinking. The results indicate that, for the majority of respondents, dockless bike-sharing systems potentially substitute for walking or public transit. In addition, our analysis of travel attitudes points out that dockless bike-sharing not only attracts bicycle lovers but also users with a preference or positive attitude toward other travel modes. The positive association between the length of bicycle paths and the likelihood of potentially replacing public transit or motorized vehicles by dockless bike-sharing also reveals that the cycling infrastructure of residential neighborhood could be an important facilitator for users of public transit and motorized vehicles to switch to dockless bike-sharing systems.
作为一种新兴的共享单车系统,无桩共享单车有可能通过鼓励主动骑自行车,吸引汽车、公共交通和步行的用户,对城市交通产生积极影响。然而,很少有实证研究探讨无桩共享单车在多大程度上取代了其他出行方式,以满足不同的出行目的。无桩共享单车用户的个人特征和周边环境特征对其模式替代行为的影响尚不清楚。利用北京市居民的调查数据和土地利用和公共交通的地理数据,我们建立了4个多项逻辑模型,探讨无桩共享单车在工作或教育通勤、运动和休闲、杂货购物和娱乐活动(如购物、吃饭和喝酒)等4种出行目的下的潜在模式替代行为。结果表明,对于大多数受访者来说,无桩共享单车系统有可能取代步行或公共交通。此外,我们对出行态度的分析指出,无桩共享单车不仅吸引了自行车爱好者,也吸引了对其他出行方式有偏好或积极态度的用户。自行车道长度与无桩共享单车取代公共交通或机动车辆的可能性之间的正相关关系也表明,居民区的自行车基础设施可能是公共交通和机动车辆用户转向无桩共享单车系统的重要促进因素。
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引用次数: 9
Modal equity of accessibility to healthcare in Recife, Brazil 巴西累西腓获得医疗保健的模式公平
IF 1.9 4区 工程技术 Q4 TRANSPORTATION Pub Date : 2022-01-24 DOI: 10.5198/jtlu.2022.2103
Boer Cui, G. Boisjoly, Bernardo Serra, A. El-geneidy
In the context of increasing urbanization and income inequality, transport professionals in the Global South need to be prepared to effectively plan for the needs of various groups within the population, particularly for those regarding health and well-being. Accessibility is widely used as a performance measure for land use and transport systems; it measures people’s ease of reaching desired destinations and incorporates mode, time, and/or cost constraints. Considerable differences exist in the level of accessibility experienced by different mode users in reaching healthcare facilities, which calls for additional equity considerations given the prevailing socio-demographic characteristics of the users of various modes and the importance of healthcare facilities as a destination. In this study, we explore the distribution of accessibility to healthcare facilities by public transport and by car in Recife, Brazil, through an equity assessment to identify areas with low accessibility using these modes at different times of day. In general, the higher accessibility of public transport as well as greater modal equity was observed in central regions of Recife, whereas the periphery, where many low-income census tracts can be found, experiences significant inequity when it comes to access by both modes to healthcare facilities. This analysis allowed us to classify locations to access impoverished, access absolutely impoverished, and access impoverished by public transport areas, which can be targeted with appropriate land use and public transport policy interventions. This paper can be of value to professionals and researchers working toward equitable land use and transport systems in the Global South.
在日益城市化和收入不平等的背景下,全球南方的运输专业人员需要做好准备,有效地规划人口中各群体的需求,特别是那些与健康和福祉有关的群体的需求。可达性被广泛用作土地使用和运输系统的绩效衡量标准;它衡量人们到达预期目的地的难易程度,并结合了模式、时间和/或成本限制。不同模式用户到达医疗设施的无障碍程度存在很大差异,鉴于各种模式用户普遍存在的社会人口特征以及医疗设施作为目的地的重要性,需要进一步考虑公平性问题。在这项研究中,我们通过公平评估,探索巴西累西腓公共交通和汽车可达性的分布,以确定在一天中不同时间使用这些模式的可达性较低的地区。总的来说,累西腓中部地区的公共交通可达性较高,交通方式也更公平,而在有许多低收入人口普查区的周边地区,通过两种交通方式获得医疗保健设施的机会明显不平等。这一分析使我们能够对贫困地区、绝对贫困地区和公共交通贫困地区进行分类,这些地区可以通过适当的土地利用和公共交通政策干预来定位。这篇论文对于致力于发展中国家土地利用和交通系统公平的专业人士和研究人员来说是有价值的。
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引用次数: 4
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