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Factors influencing the usage of shared micromobility: Implications from Berlin 影响共享微流动性使用的因素:来自柏林的启示
Pub Date : 2025-03-21 DOI: 10.1016/j.jcmr.2025.100063
Maximilian Heumann , Tobias Kraschewski , Philipp Otto , Lukas Tilch , Tim Brauner , Michael H. Breitner
The popularity of urban micromobility has steadily grown in cities worldwide. There is a lack of comparative studies investigating factors influencing the travel behavior of shared micromobility in Europe. From this, we investigate shared bicycle, e-scooter, and e-moped usage in Berlin based on trip data from September 2019 to March 2022. We incorporate a comprehensive set of spatial, temporal, weather-, fleet size-, and COVID-19-lockdown-related factors. To account for significant over-dispersion in our hourly resolved panel dataset for 542 traffic analysis zones, we employ a functional spatiotemporal regression model to estimate variables of trip counts for the three micromobility modes. Our descriptive results reveal spatiotemporal characteristics of shared bicycle, e-scooter, and e-moped usage and significant growth of operating fleet sizes in Berlin in recent years. We provide evidence that fleet expansion does not lead to a proportional increase in trips, implying competitive effects among operators limit potential growth. As urban space is scarce and regulations on fleet sizes are lacking, urban planners and service providers use these findings and complementary studies to plan fleets and their allocation optimally. Impacts associated with land use vary between modes and allow for demand-based planning. Precipitation is the most impactful factor among the weather variables and shows a pronounced adverse effect on all three modes. COVID-19-lockdown phases had no significant effect on e-mopeds. While bicycles were moderately affected, e-scooter trips decreased significantly. The findings can help policymakers and micromobility operators further optimize sharing mobility services and facilitate evidence-based strategies for the spatial and temporal design of micromobility.
城市微型交通的普及在世界各地的城市中稳步增长。在欧洲,缺乏对影响共享微交通出行行为因素的比较研究。基于此,我们根据2019年9月至2022年3月的出行数据,调查了柏林共享自行车、电动滑板车和电动轻便摩托车的使用情况。我们综合考虑了空间、时间、天气、机队规模和covid -19封锁相关因素。为了解释542个交通分析区每小时分辨率面板数据集中显著的过度分散,我们采用功能时空回归模型来估计三种微交通模式的出行次数变量。我们的描述性结果揭示了近年来柏林共享自行车、电动滑板车和电动轻便摩托车使用的时空特征以及运营车队规模的显着增长。我们提供的证据表明,机队扩张不会导致旅行次数成比例增加,这意味着运营商之间的竞争影响限制了潜在的增长。由于城市空间稀缺,缺乏对车队规模的监管,城市规划者和服务提供商利用这些发现和补充研究来规划车队及其最佳分配。与土地使用相关的影响因模式而异,并允许基于需求的规划。降水是天气变量中影响最大的因子,对三种模态均有显著的不利影响。新冠肺炎疫情的封锁阶段对电动助力车没有显著影响。虽然自行车受到的影响不大,但电动滑板车的出行次数明显减少。研究结果可以帮助决策者和微出行运营商进一步优化共享出行服务,并为微出行的时空设计提供循证策略。
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引用次数: 0
Personas-based e-scooter usage patterns analysis at a Greek research campus 基于人物的电动滑板车使用模式分析在希腊研究校园
Pub Date : 2025-03-13 DOI: 10.1016/j.jcmr.2025.100062
Panagiota Mavrogenidou, Amalia Polydoropoulou
Micro-mobility, particularly e-scooters, is characterized as a promising solution to urban transportation challenges by reducing congestion and pollution. However, integrating e-scooters into urban environments has been challenging due to safety concerns and friction with other transport modes, leading to public opposition and potential bans. These challenges underscore the benefits of deploying e-scooters in controlled environments like university campuses, where their impact can be better managed. This study examines e-scooter implementation on a Greek campus, focusing on identifying hidden factors influencing usage levels through exploratory factor analysis (EFA). In addition, cluster analyses reveal different personality types that significantly affect usage levels. The Real-life Experiment was conducted in two phases, compared behaviors over time, and accounted for weather variations. The study innovatively integrates questionnaire and usage data to identify hidden factors affecting usage and segment users into personas. The analysis created four perception-based personas (Reluctant, Cautious, Practical, Interested but Unconvinced) and four trip-based personas (Young and Infrequent, Young and Frequent, Older and Infrequent, Older and Frequent). Chi-square analysis and Sankey diagrams visualized personas’ patterns, while ridgeline plots showed variable distributions across the two phases. Results highlighted the significant impact of safety concerns, transport challenges, perceived e-scooter benefits, and weather on utilization levels. The insights from this study provide valuable guidance for effectively implementing e-scooter systems to enhance sustainability and reduce unnecessary car trips. Recognizing the challenges and opportunities associated with adopting e-scooter sharing systems allows research institutions to better plan and promote sustainable practices.
微型交通工具,特别是电动滑板车,通过减少拥堵和污染,被认为是解决城市交通挑战的一种有希望的解决方案。然而,由于安全问题和与其他交通方式的摩擦,将电动滑板车融入城市环境一直具有挑战性,这导致了公众的反对和潜在的禁令。这些挑战凸显了在大学校园等受控环境中部署电动滑板车的好处,在那里它们的影响可以得到更好的管理。本研究考察了电动滑板车在希腊校园的实施情况,重点是通过探索性因素分析(EFA)找出影响使用水平的隐藏因素。此外,聚类分析揭示了不同的人格类型显著影响使用水平。现实生活实验分两个阶段进行,比较了不同时间的行为,并考虑了天气变化。该研究创新地将问卷调查和使用数据相结合,以识别影响使用的隐藏因素,并将用户划分为人物角色。分析创建了四个基于感知的人物角色(不情愿,谨慎,实际,感兴趣但不相信)和四个基于旅行的人物角色(年轻和不经常,年轻和经常,年长和不经常,年长和经常)。卡方分析和桑基图可视化了人物角色的模式,而脊线图显示了两个阶段的不同分布。研究结果强调了安全问题、运输挑战、感知到的电动滑板车优势以及天气对利用率的重大影响。本研究的见解为有效实施电动滑板车系统提供了有价值的指导,以提高可持续性并减少不必要的汽车旅行。认识到与采用电动滑板车共享系统相关的挑战和机遇,可以让研究机构更好地规划和促进可持续实践。
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引用次数: 0
Effectiveness of traffic signs to prevent fly parking 防止苍蝇停车的交通标志的有效性
Pub Date : 2025-03-10 DOI: 10.1016/j.jcmr.2025.100060
Alexandra Gavriilidou, Rolien Holster, Winnie Daamen
As bicycle use increases, so does the need for formal parking spaces to safely store them while performing other activities at a destination. In the Netherlands, several municipalities have created indoor and outdoor formal parking spaces, which remain underutilised. Instead, many cyclists choose to ‘fly park’, i.e. informally lock their bicycle to objects on the street. This can cause dangerous situations or inconvenience, for example by blocking sidewalks. The discrepancy between the use of formal and informal parking spaces may be attributed to a lack of information provided to cyclists about the available formal parking options. This study investigated the effectiveness of different traffic sign designs in encouraging the use of formal parking spaces. The designs were developed within this research with the intention of capturing different communication strategies, namely hazardous, neutral educative and negative educative. A stated preference choice experiment was then performed to allow the comparison of the effectiveness of the different designs, and thus communication strategies. The responses were analysed using discrete choice modelling. According to the results, traffic signs alerting users to the fact that controls are performed (hazardous communication) are the most effective in the fly parking prevention, especially for frequent bicycle users.
随着自行车使用量的增加,在目的地进行其他活动时,也需要正式的停车位来安全地存放自行车。在荷兰,一些城市已经建立了室内和室外的正式停车位,但这些停车位仍未得到充分利用。相反,许多骑自行车的人选择“飞停”,即非正式地将自行车锁在街上的物体上。这可能会造成危险的情况或不便,例如堵塞人行道。正式和非正式停车位的使用差异可能是由于缺乏向骑自行车的人提供关于可用的正式停车选择的信息。本研究调查了不同交通标志设计在鼓励使用正式停车位方面的效果。这些设计是在本研究中开发的,旨在捕捉不同的沟通策略,即危险、中性教育和消极教育。然后进行了一个陈述偏好选择实验,以允许比较不同设计的有效性,从而交流策略。使用离散选择模型对响应进行了分析。结果表明,交通标志提醒用户进行控制(危险通信)是预防苍蝇停车最有效的方法,特别是对于经常骑自行车的人。
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引用次数: 0
Comparing injuries from e-scooters, e-bikes, and bicycles in the United States 比较美国电动滑板车、电动自行车和自行车造成的伤害
Pub Date : 2025-02-28 DOI: 10.1016/j.jcmr.2025.100061
Hannah Younes
There is a growing perception that e-scooters are more dangerous than bicycles and e-bikes, with towns implementing measures to ban their usage. Yet, there is not much evidence from large scale surveys to substantiate this claim. Nearly 14,000 micromobility injuries leading to emergency care in the United States in 2021 and 2022 are analyzed in this study. The following questions are addressed: What are the characteristics of injured micromobility users? Are injured e-scooter users more likely to suffer severe or fatal injuries than other injured micromobility users? What is the relationship between motor-vehicles and micromobility-related injuries? Around 15 % of injured micromobility users presenting to an emergency department were admitted to the hospital. Injured e-scooter users were not more likely to suffer severe injuries than bicyclists and e-bike users. Factors influencing micromobility injury severity included: older age, being male, involvement of a motor-vehicle, and alcohol/substance use. E-bike injuries were more likely to (33 %) involve a motor-vehicle than bicycle (26 %) and e-scooter injuries (23 %). Injured e-scooter users were more diverse (e.g., a higher proportion of women and minorities) and tended to be younger than bicyclists and e-bike users, indicating a potential wider diversity of users. As micromobility becomes a growing mode of sustainable transportation, we must ensure that conditions are safe for all users. This includes separated and protected pathways for micromobility users, traffic calming measures for motor-vehicles, adequate post-crash care for all, and policies that advocate for safe usage, instead of preventing usage, of micromobility modes.
越来越多的人认为,电动滑板车比自行车和电动自行车更危险,因此一些城镇采取了禁止使用电动滑板车的措施。然而,大规模调查并没有太多证据证明这种说法。本研究分析了 2021 年和 2022 年美国导致急诊的近 14,000 起微型电动车伤害事故。研究涉及以下问题受伤的微型交通工具使用者有哪些特征?与其他受伤的微型交通工具使用者相比,受伤的电动摩托车使用者是否更有可能遭受严重或致命伤害?机动车与微移动相关伤害之间的关系是什么?在前往急诊科就诊的微型交通工具受伤者中,约有15%的人被送入医院。与自行车和电动自行车使用者相比,电动摩托车使用者受伤的严重程度并不高。影响微型交通工具受伤严重程度的因素包括:年龄较大、男性、涉及机动车辆以及酗酒/服用药物。与自行车(26%)和电动滑板车(23%)相比,电动自行车受伤(33%)更有可能涉及机动车。与自行车和电动自行车使用者相比,电动滑板车使用者更加多样化(例如,女性和少数民族的比例更高),而且往往更年轻,这表明使用者可能更加多样化。随着微型交通成为一种日益增长的可持续交通方式,我们必须确保所有使用者的安全。这包括为微型交通使用者提供分隔的、受保护的道路,为机动车采取交通疏导措施,为所有人提供充分的碰撞后护理,以及倡导安全使用而不是阻止使用微型交通模式的政策。
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引用次数: 0
Bike sharing systems: The impact of precise trip demand forecasting on operational efficiency in different city structures 共享单车系统:不同城市结构下精准出行需求预测对运行效率的影响
Pub Date : 2025-02-04 DOI: 10.1016/j.jcmr.2025.100058
Selin Ataç , Nikola Obrenović , Michel Bierlaire
Increasing environmental concerns drive interest in sustainable solutions across various fields. Vehicle sharing systems such as one-way station-based bike sharing systems (BSSs) offer one such solution in transportation, although they pose operational challenges like vehicle imbalance. While many studies focus on optimizing rebalancing operations using trip demand forecasting, the added value of precise trip demand forecasting remains unexplored. This study assesses the added value of collecting detailed trip demand data and developing trip demand forecasting models. To achieve this, we create a simulation–optimization framework representing a city BSS in operation during the day. We use a discrete-event simulator representing the system dynamics and an enhanced mathematical model optimizing the rebalancing operations. We employ clustering in the optimization module to manage larger case studies, dividing the problem into smaller sub-problems. Our computational experiments compare two main scenarios, perfect demand forecast and unknown future demand, as well as several intermediate scenarios where partial future trip demand information is available. These scenarios allow us to determine the trade-off between lost trip demand and rebalancing operations costs, assess demand forecasting benefits, and identify the budget’s upper limit for precise trip demand forecasting. Subsequently, we conduct experiments on one synthetic (35 stations) and four real-life case studies, ranging from small systems (21 and 298 stations) to large systems (681 and 1361 stations). Results reveal that precise trip demand forecasting has varying impacts on small and large BSSs, with larger BSSs benefiting the most without significantly increasing the rebalancing operations costs. We also observe that the most significant improvements occur between 0% and 40% trip demand knowledge while beyond 60%, the increase in returns diminishes. The findings of this study offer valuable insights for operators in enhancing service levels and optimizing resource allocation.
越来越多的环境问题推动了各个领域对可持续解决方案的兴趣。车辆共享系统,如基于单向站的自行车共享系统(bss),为交通运输提供了这样一种解决方案,尽管它们会带来车辆不平衡等运营挑战。虽然许多研究都集中在利用出行需求预测优化再平衡操作上,但精确出行需求预测的附加价值尚未得到探索。本研究评估了收集详细的出行需求数据和开发出行需求预测模型的附加价值。为了实现这一点,我们创建了一个模拟优化框架,代表白天运行的城市BSS。我们使用离散事件模拟器表示系统动力学和优化再平衡操作的增强数学模型。我们在优化模块中使用聚类来管理较大的案例研究,将问题划分为较小的子问题。我们的计算实验比较了两种主要情景,完美需求预测和未知未来需求,以及几种中间情景,其中部分未来出行需求信息是可用的。这些场景使我们能够确定损失的出行需求和重新平衡运营成本之间的权衡,评估需求预测的好处,并确定精确的出行需求预测的预算上限。随后,我们在一个合成(35个站点)和四个实际案例研究中进行了实验,范围从小型系统(21和298个站点)到大型系统(681和1361个站点)。结果表明,精确的出行需求预测对小型和大型bss有不同的影响,大型bss受益最大,但不会显著增加再平衡运营成本。我们还观察到,最显著的改善发生在0%和40%之间的旅行需求知识,而超过60%,回报的增长减少。本研究结果为运营商提高服务水平和优化资源配置提供了有价值的见解。
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引用次数: 0
What determines the use of private and shared bicycles? Evidence from the University of Lyon (France) 是什么决定了私人自行车和共享自行车的使用?来自里昂大学(法国)的证据
Pub Date : 2025-02-01 DOI: 10.1016/j.jcmr.2025.100059
Nathalie Havet, Louafi Bouzouina
Many cities have introduced policies to promote cycling through personal and shared bicycles. However, there are limited studies simultaneously exploring the determinants affecting the types of cycling and their interactions within the urban mobility system. This article aims to analyze factors influencing the use of private and shared bicycles using data from a student survey conducted at 17 academic institutions in Lyon, using a copula-based binary choice model. Our results show that spatial factors, such as residential location, shared bike accessibility, and home-campus distance, strongly influence the active mode choice. They also provide novel evidence on the complementarity and substituability between cycling and other modes. For example, we find that while having a public transport season ticket significantly reduces the likelihood of commuting by bicycle, this substituability is more pronounced between public transport and shared bike use than between public transport and use of private bikes. However, for multomodal home-study trips, shared bikes are stronger complements to alternative modes (inclunding public transport) than private bikes. From a policy perspective, these results confirm the need for specific heterogeneous policies aimed at promoting cycling and sustainable mobility.
许多城市都出台了鼓励个人和共享单车骑行的政策。然而,同时探讨城市交通系统中影响自行车类型及其相互作用的决定因素的研究有限。本文旨在使用基于copula的二元选择模型,利用在里昂17所学术机构进行的学生调查数据,分析影响私人和共享自行车使用的因素。研究结果表明,居住区位、共享单车可达性和家校距离等空间因素对学生主动模式的选择有较大影响。这也为自行车与其他交通方式的互补性和可替代性提供了新的证据。例如,我们发现,虽然拥有公共交通季票大大降低了骑自行车上下班的可能性,但这种可替代性在公共交通和共享自行车之间比在公共交通和使用私人自行车之间更为明显。然而,对于多式联运的家庭学习旅行来说,共享单车比私人单车更能补充其他交通方式(包括公共交通)。从政策角度来看,这些结果证实了制定旨在促进自行车和可持续交通的具体异质性政策的必要性。
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引用次数: 0
When do shared e-scooters complement or compete with public transport? A mixed-method review and comparison with bike sharing 共享电动滑板车何时与公共交通形成互补或竞争?混合方法对共享单车的回顾与比较
Pub Date : 2025-01-09 DOI: 10.1016/j.jcmr.2025.100057
Mahesha Jayawardhena, Alexa Delbosc, Graham Currie, Geoff Rose
E-scooters are one of the latest additions to transport networks in many countries and their popularity is increasing rapidly. A range of studies have been conducted to understand the relationship between e-scooters and public transport. Some found that e-scooters complement public transport, serving as a first mile/last mile access mode, whereas others found that they compete by taking riders away from public transport. The contradictory results of studies in different contexts make it unclear whether results in one city are transferrable to another. This study aims to explore the definitions of ‘complement’ and ‘compete’ in literature and to identify the circumstances where e-scooters complement or compete with public transport using a mixed-method literature review. We combine a systematic literature review of e-scooter papers with a scoping review of bike-share studies to see if the two modes act in a similar manner. Most researchers found that e-scooters tend to complement rail but are more likely to compete with buses. Bike-share behaves in a similar manner, but the competing effect with buses is higher with bike-share than shared e-scooters. Both shared e-scooters and bike-share have a complementary relationship with public transport for commuting and longer trips. Moreover, shared e-scooters have the potential to promote public transport when deployed thoughtfully, but further investigation is needed given the novelty of the field. Further research should focus on a wider variety of cities (particularly outside of Europe and the USA), the reasons behind rider behavior and different ridership patterns and characteristics of personally owned e-scooters.
电动滑板车是许多国家交通网络的最新成员之一,其受欢迎程度正在迅速增加。为了了解电动滑板车和公共交通之间的关系,已经进行了一系列的研究。一些人发现,电动滑板车是对公共交通的补充,作为第一英里/最后一英里的出行方式,而另一些人则发现,电动滑板车的竞争方式是把乘客从公共交通中夺走。不同背景下的研究结果相互矛盾,这使得一个城市的结果是否可以转移到另一个城市变得不清楚。本研究旨在探索文献中“补充”和“竞争”的定义,并使用混合方法文献综述确定电动滑板车与公共交通互补或竞争的情况。我们将对电动滑板车论文的系统文献综述与对共享单车研究的范围综述结合起来,看看这两种模式是否以相似的方式起作用。大多数研究人员发现,电动滑板车往往是对铁路的补充,但更有可能与公共汽车竞争。共享单车的行为方式与此类似,但共享单车与公交车的竞争效应要高于共享电动滑板车。共享电动滑板车和共享单车都与通勤和长途旅行的公共交通有着互补关系。此外,如果部署得当,共享电动滑板车有可能促进公共交通,但考虑到该领域的新颖性,还需要进一步调查。进一步的研究应该集中在更广泛的城市(特别是欧洲和美国以外的城市),骑行者行为背后的原因,以及个人拥有的电动滑板车的不同骑行模式和特征。
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引用次数: 0
Exploring the Shared E-Scooter adoption behavior: A case study of Chicago, USA 共享电动滑板车使用行为探析——以美国芝加哥市为例
Pub Date : 2025-01-04 DOI: 10.1016/j.jcmr.2024.100056
Nazmul Arefin Khan , Krishna Murthy Gurumurthy , Amir Davatgari , Abolfazl (Kouros) Mohammadian , Joshua Auld
In recent years, shared E-Scooters (SES) have emerged as one of the most popular and rapidly growing micromobility modes. To better understand the role of SES in urban mobility, it is critical for policymakers and planners to explore the adoption behavior and usage frequency of Shared E-Scooters. This study jointly estimates the Shared E-Scooters' potential adoption and frequency of usage using a zero-inflated ordered probit (ZIOP) model. This approach can be interpreted as whether an individual considers E-scooters as a travel mode alternative, and if so, how frequently they use E-scooters, which also has a zero occurrence. The study uses a dataset from the City of Chicago. The parameter estimation results suggest that various socio-demographics, built environment, accessibility measures and service characteristics have adequate impacts on E-Scooter adoption and usage frequency. This study also implements the model within the POLARIS agent-based transportation system simulator to examine the potential impact of various E-Scooter deployment scenarios. Results suggest that deploying more Shared E-Scooters in the traffic network not only increases the number of E-Scooter trips, but also helps to decrease the person-miles traveled and person-hour traveled. Insights from this study would be useful for planners and policymakers to develop alternative policy strategies associated with emerging mobility.
近年来,共享电动滑板车(SES)已成为最受欢迎和发展最快的微型交通方式之一。为了更好地理解SES在城市交通中的作用,政策制定者和规划者必须探索共享电动滑板车的采用行为和使用频率。本研究采用零膨胀有序概率(ZIOP)模型对共享电动滑板车的潜在采用率和使用频率进行了联合估计。这种方法可以解释为个人是否将电动滑板车视为一种替代的出行方式,如果是,他们使用电动滑板车的频率是多少,这也是零发生。该研究使用了芝加哥市的数据集。参数估计结果表明,各种社会人口统计、建筑环境、可达性措施和服务特征对电动滑板车的采用和使用频率有充分的影响。本研究还在基于代理的POLARIS交通系统模拟器中实现了该模型,以检查各种电动滑板车部署场景的潜在影响。结果表明,在交通网络中部署更多的共享电动滑板车不仅可以增加电动滑板车的出行次数,而且有助于减少出行的人英里数和人小时数。这项研究的见解将有助于规划者和决策者制定与新兴流动性相关的替代政策策略。
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引用次数: 0
Roadblocks to ride: Unraveling barriers to access shared micromobility systems in the United States 骑行的路障:解开美国共享微移动系统的障碍
Pub Date : 2024-12-21 DOI: 10.1016/j.jcmr.2024.100055
Farzana Mehzabin Tuli , Suman Kumar Mitra
Shared micromobility services are experiencing rapid expansion in the United States and Europe, yet certain user groups, particularly low-income and disadvantaged individuals, face significant barriers related to financial, technical, and cultural factors. This study provides a comprehensive analysis of these barriers within the US by examining bike-sharing, shared e-scooters and programs offering both services. Data was meticulously collected from diverse sources, including official bikeshare provider websites, municipal transportation sites, program reports, local news articles, and mobile applications. This comprehensive data collection methodology provides a thorough representation of 458 shared micromobility systems, encompassing all services available since the inception of shared micromobility in the US. To elucidate the specific barriers faced by users, we employed the K-Prototype clustering methodology, an unsupervised machine learning technique capable of handling datasets with both numerical and categorical features. This approach enabled us to uncover distinct patterns and groupings among shared micromobility services based on these barriers. Our analysis identified four distinct clusters: Cluster 1 faces low technical but high financial barriers; Cluster 2 excels in financial accessibility but struggles with technical barriers; Cluster 3 experiences moderate barriers with progress in reducing financial and technical challenges but still needs improvement; and Cluster 4 encounters high barriers across financial, technical, and cultural dimensions. Additionally, an in-depth analysis of these clusters is performed, considering the percentage share of bikesharing and shared e-scooter services, city sizes, regional distribution, fleet size, launching year, deployment, and operations status. The outcomes of this analysis reveal that larger cities exhibit a higher share of 'moderate barrier' (Cluster 3) systems that are currently active in the pilot phase. In contrast, shared micromobility systems from mid-size, small mid-size, and especially small cities in the US experience 'high barrier' (Cluster 4) issues the most, often with smaller fleet sizes (less than 250). Identifying these clusters is crucial for enabling targeted interventions. Rather than applying a broad, one-size-fits-all approach, policymakers and planners can develop tailored strategies that address the unique challenges of each cluster. This targeted approach ensures that interventions are more effective and equitable, ultimately improving access to shared micromobility services for all users.
共享微出行服务在美国和欧洲正在快速扩张,但某些用户群体,特别是低收入和弱势群体,面临着与金融、技术和文化因素相关的重大障碍。本研究通过考察共享单车、共享电动滑板车和提供这两种服务的项目,对美国境内的这些障碍进行了全面分析。数据从各种来源精心收集,包括官方共享单车提供商网站、市政交通网站、项目报告、当地新闻文章和移动应用程序。这种全面的数据收集方法提供了458个共享微交通系统的全面代表,包括自美国共享微交通开始以来可用的所有服务。为了阐明用户面临的具体障碍,我们采用了K-Prototype聚类方法,这是一种能够处理具有数值和分类特征的数据集的无监督机器学习技术。这种方法使我们能够发现基于这些障碍的共享微移动服务之间的不同模式和分组。我们的分析确定了四个不同的集群:集群1面临低技术但高金融壁垒;集群2在金融可及性方面表现优异,但仍面临技术障碍;第三组在减少财政和技术挑战方面取得进展,遇到了适度障碍,但仍需要改进;集群4在金融、技术和文化方面遇到了很高的障碍。此外,考虑到共享自行车和共享电动滑板车服务的百分比份额、城市规模、区域分布、车队规模、推出年份、部署和运营状态,对这些集群进行了深入分析。这一分析的结果表明,目前在试点阶段活跃的“中等障碍”(集群3)系统在较大城市中所占比例更高。相比之下,来自美国中型、中小型城市,尤其是小城市的共享微型交通系统遇到的“高障碍”(第4类)问题最多,通常车队规模较小(少于250人)。确定这些集群对于实现有针对性的干预至关重要。决策者和规划者可以制定量身定制的战略,解决每个集群的独特挑战,而不是采用广泛的、一刀切的方法。这种有针对性的做法确保干预措施更加有效和公平,最终改善所有用户获得共享微型交通服务的机会。
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引用次数: 0
Empirical study of bicycle traffic characteristics relevant for microscopic simulation 微观模拟中自行车交通特征的实证研究
Pub Date : 2024-12-19 DOI: 10.1016/j.jcmr.2024.100054
Guillermo Pérez Castro , Fredrik Johansson , Johan Olstam
Studies of bicycle traffic characteristics are essential for understanding bicyclist behavior and developing suitable microscopic models for traffic simulation. Based on empirical data on real-world bicycle traffic, obtained through video-based data collection techniques, we describe characteristics of free-riding, following, and overtaking that facilitate the simulation of bidirectional bicycle traffic. In total, we analyze data from 195 605 bicyclists across seven bicycle paths in Sweden, with five located in Stockholm and two in Gothenburg. The analysis reveals multimodal distributions of speed and lateral position due to the distinct preferences of bicyclists that vary according to the type of bicycle used. Moreover, speeds are generally highest during morning rush hours at the locations under investigation. Based on wind measurements, we conclude that there is no statistically significant effect on mean free speed from wind speeds in the range of ±3 m/s. The distribution of speed differences between bicyclists at overtakings indicates a broad range of speed disparities among bicyclists, and is significantly influenced by infrastructure design. Furthermore, infrastructure design (path width, horizontal alignment, and presence of fixed objects along the edge) and traffic volumes significantly lateral positioning. Our results demonstrate the inherent heterogeneity in the characteristics of bicyclists, underscoring the need to advance modeling to incorporate these distinct characteristics into microscopic traffic simulation.
自行车交通特性的研究对于理解骑自行车者的行为和建立合适的微观交通模拟模型至关重要。基于基于视频的数据采集技术获得的真实世界自行车交通的经验数据,我们描述了免费骑行、跟随和超车的特征,便于模拟双向自行车交通。我们总共分析了瑞典七条自行车道上195605名骑自行车者的数据,其中五条位于斯德哥尔摩,两条位于哥德堡。该分析揭示了速度和横向位置的多模态分布,这是由于骑自行车的人的不同偏好所导致的,这种偏好因所使用的自行车类型而异。此外,受调查地点的车速一般在早高峰时段最高。根据风速测量,我们得出结论,风速在±3 m/s范围内对平均自由速度没有统计学上显著的影响。超车时骑自行车者的速度差异分布表明骑自行车者之间的速度差异范围较大,且受基础设施设计的显著影响。此外,基础设施设计(道路宽度、水平路线和边缘固定物体的存在)和交通量显著地侧向定位。我们的研究结果证明了骑自行车者特征的内在异质性,强调了将这些不同特征纳入微观交通模拟的建模的必要性。
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引用次数: 0
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Journal of Cycling and Micromobility Research
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