International Journal of Sustainable Transportation最新文献

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Perceived seriousness of environmental issues and the influence of willingness to pay for hybrid vehicles: An anthropological extension of the theory of planned behavior 环境问题的严重性认知与混合动力汽车支付意愿的影响：计划行为理论的人类学延伸

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-09-01 DOI: 10.1080/15568318.2024.2399166

As an energy-efficient transportation innovation, hybrid vehicles (HVs) have the potential to minimize carbon emissions and address environmental issues. The study is novel as it presents significant theoretical contributions within the theory of planned behavior (TPB) framework. Firstly, it integrates the perceived seriousness of environmental problems as a predictor, enhancing understanding of individual responses to environmental concerns. Secondly, it expands the TPB model by introducing willingness to pay for HVs as a moderator, acknowledging the economic aspect of adopting environmentally friendly technologies. These additions enrich the TPB framework, offering insights into the interplay between psychological determinants and economic considerations in behavior change. The study therefore aims to extend the TPB by incorporating two key elements: perceived seriousness of environmental issues and willingness to pay for HVs. We find that perceived seriousness of problems in the environmental has positive impact on attitude toward adoption of HVs, subjective norms, perceived behavioral control, intentions to adopt and actual use of HVs. TPB constructs have positive impact on intentions to adopt and actually use HVs. Moreover, intentions to adopt HVs also positively influence the actual use of HVs. Moreover, the results show that the serial mediations are also in play, whereby perceived seriousness of environmental issues influences TPB constructs, which influence intentions to adopt HV which in turn influence the actual use of HVs. We also find that willing to pay for HVs plays an enhancing role as a moderator in the TPB model.

作为一种节能交通创新，混合动力汽车（HV）具有最大限度减少碳排放和解决环境问题的潜力。本研究在计划行为理论（TPB）框架内提出了重要的理论贡献，因此具有新颖性。首先，它将对环境问题严重性的感知作为一个预测因素，从而加深了对个人对环境问题反应的理解。其次，它通过引入氢氟碳化物的支付意愿作为调节因素，扩展了 TPB 模型，承认了采用环保技术的经济性。这些新增内容丰富了 TPB 框架，为行为改变中心理决定因素和经济因素之间的相互作用提供了见解。因此，本研究旨在通过纳入两个关键因素来扩展主观能动性框架，这两个因素是：环境问题的严重性感知和为有害物质付费的意愿。我们发现，对环境问题严重性的感知对采用高压电源的态度、主观规范、感知行为控制、采用高压电源的意愿和实际使用高压电源都有积极影响。TPB 构建对采用和实际使用空调的意向有积极影响。此外，采用志愿服务的意向也对志愿服务的实际使用产生了积极影响。此外，研究结果表明，串联中介也在起作用，即环境问题的严重性感知影响了主观能动性构建，而主观能动性构建又影响了采用空调的意愿，而采用空调的意愿又影响了空调的实际使用。我们还发现，愿意为高风险产品付费在主观能动性模型中起到了促进作用。

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引用次数: 0

Last mile delivery with drones: A carbon emissions comparison 使用无人机进行最后一英里配送：碳排放比较

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-09-01 DOI: 10.1080/15568318.2024.2407150

The development and potential adoption of drones or unmanned aerial vehicles as delivery vehicles creates incredible opportunities and unique challenges for last mile delivery. This research first presents a last mile delivery fleet model with drones that can be further modified and expanded over time. The model shows the optimal number of drones needed based on deterministic or stochastic demand using both traditional charging and battery swapping. The research then compares the carbon emissions of four delivery modes: traditional internal combustion delivery vehicles, all-electric vehicles, plug-in hybrids, and drones within the context of last mile delivery. Findings reveal that the breakdown of carbon emissions by delivery modality depends on parameter assumptions, ambient temperature, delivery radius, electric grid pollution rate, and number of customers.

无人机或无人驾驶飞行器作为送货工具的发展和潜在采用，为最后一英里送货创造了难以置信的机遇和独特的挑战。这项研究首先提出了一个最后一英里配送机队模型，该模型可随着时间的推移进一步修改和扩展。该模型显示了基于确定性或随机需求，使用传统充电和电池交换方式所需的最佳无人机数量。然后，研究比较了四种配送模式的碳排放量：传统内燃配送车辆、纯电动汽车、插电式混合动力汽车以及最后一英里配送范围内的无人机。研究结果表明，不同配送方式的碳排放量取决于参数假设、环境温度、配送半径、电网污染率和客户数量。

引用次数: 0

Cargo bikes for personal transport: A user segmentation based on motivations for use 用于个人运输的货运自行车：基于使用动机的用户细分

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-09-01 DOI: 10.1080/15568318.2024.2402753

Building on the success of e-bikes, sales of e-cargo bikes are rapidly increasing in several countries. Cargo bikes fill an important gap in the urban transport market by combining the advantages of cycling with the greater transport capacity of a family car. Whereas most research on cargo bikes has focused on logistics, this paper addresses their use for personal transport. It is based on a large-scale survey in Switzerland among both proprietary cargo bike owners (CBO) and users of cargo bike sharing (CBS) (N = 955). A principal component analysis finds 3 families of motivations for using cargo bikes: transporting children, staying active, and reducing car use. Based on these 3 components, we use hierarchical clustering to identify 4 user segments: cargo transporters, enthusiasts, multimodals, and sustainable parents. Our results suggest that owned and shared cargo bikes are complementary and have the potential to attract new audiences to cycling and reduce car use. They could become a central component in a low-carbon/post-car urban mobility strategy. However, user experiences indicate that lacking safety, road infrastructure and parking provisions remain barriers to wider cargo bike use. We conclude by proposing a future research agenda for cargo bike research.

在电动自行车取得成功的基础上，电动货运自行车的销量在一些国家迅速增长。货运自行车将自行车的优势与家用汽车更大的运输能力相结合，填补了城市交通市场的重要空白。关于货运自行车的研究大多集中在物流领域，而本文则探讨其在个人交通中的应用。本文基于一项在瑞士进行的大规模调查，调查对象包括货运自行车的所有者（CBO）和货运自行车共享的使用者（CBS）（N = 955）。通过主成分分析，我们发现了使用货运自行车的三大动机：接送孩子、保持运动和减少汽车使用。基于这 3 个成分，我们采用分层聚类的方法确定了 4 个用户群体：货物运输者、爱好者、多式联运者和可持续发展的父母。我们的研究结果表明，自有和共享货运自行车是互补的，有可能吸引新的受众骑自行车，减少汽车使用。它们可以成为低碳/后汽车城市交通战略的核心组成部分。然而，用户体验表明，缺乏安全、道路基础设施和停车规定仍然是更广泛使用货运自行车的障碍。最后，我们提出了货运自行车研究的未来研究议程。

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引用次数: 0

Driving the future: How value retention rate shapes electric vehicle adoption 驱动未来：价值保持率如何影响电动汽车的采用

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-09-01 DOI: 10.1080/15568318.2024.2402754

The government has been promoting the adoption of electric vehicles (EVs) in recent decades. However, challenges still exist in encouraging widespread use of EVs, which may impact potential buyers. Aside from the well-known barriers related to purchasing, the rate at which the value of EVs is retained over time may also influence consumers’ decisions. This article presents a model based on cue utilization theory to understand how consumers respond to the value retention rate when considering purchasing an EV. The model also examines how perceived quality and two intrinsic cues - brand reputation and the frequency of new product releases - influence this response. The findings indicate that the value retention rate influences consumers’ assessments and purchase decisions, particularly when the intrinsic cues are absent or insufficient. These findings have implications for government policies, EV manufacturers’ promotion strategies, and operational management.

近几十年来，政府一直在推动电动汽车（EV）的采用。然而，在鼓励广泛使用电动汽车方面仍然存在挑战，这可能会影响潜在买家。除了众所周知的购买障碍外，电动汽车的保值率也会影响消费者的决策。本文提出了一个基于线索利用理论的模型，以了解消费者在考虑购买电动汽车时如何对保值率做出反应。该模型还研究了感知质量和两个内在线索--品牌声誉和新产品发布频率--如何影响这种反应。研究结果表明，保值率会影响消费者的评估和购买决策，尤其是在内在线索缺失或不足的情况下。这些研究结果对政府政策、电动车制造商的促销策略和运营管理都有借鉴意义。

引用次数: 0

Am I really willing to use my electric vehicle sustainably? A study on the charging preferences of electric vehicle users 我真的愿意可持续地使用电动汽车吗？关于电动汽车用户充电偏好的研究

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-09-01 DOI: 10.1080/15568318.2024.2399783

As, in most countries, electricity cannot be efficiently and practically stored at a systemic level, charging EVs during peak hours implies that additional energy has to be generated (relying almost exclusively on fossil sources) to cover the additional demand during that time window. This article reports the results of an SP-study, in which EV-owners were confronted with the option of charging their EVs at home (for a fixed known price) or at a publicly accessible charging station with charging price variability (as well as other features of EV charging). The results of the behavioral experiment show that EV-users exhibit a high willingness to accept alternative compensations for not charging EVs during peak-hours and that small monetary incentives as well as shorter access times, a guaranteed charging place, or fast charging could all efficiently promote a shift in the charging patterns toward a more sustainable behavior.

由于在大多数国家，电力无法在系统层面进行有效和实际的储存，因此在高峰时段为电动汽车充电意味着必须产生额外的能源（几乎完全依赖化石能源），以满足该时间窗口的额外需求。本文报告了一项 SP 研究的结果，在这项研究中，电动汽车车主可以选择在家中（以固定的已知价格）或在充电价格可变的公共充电站（以及电动汽车充电的其他特点）为其电动汽车充电。行为实验的结果表明，电动汽车用户非常愿意接受其他补偿措施，以避免在高峰时段为电动汽车充电，而小额金钱奖励、更短的使用时间、有保障的充电地点或快速充电都能有效促进充电模式向更可持续的行为转变。

引用次数: 0

Digital platforms for sharing and booking electrical vehicle charging infrastructure 共享和预订电动汽车充电基础设施的数字平台

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-09-01 DOI: 10.1080/15568318.2024.2407139

Making road transport more sustainable is a vital part in reducing emissions, where the transition to electric freight vehicles (EFVs) are important. In this transition, there is a need for available electric vehicle charging infrastructure (EVCI). Many logistic companies are installing their own EVCI, which is primarily used during the night. This study explores how providers could share and users book charging on digital platforms for EFVs by conducting a qualitative study of a pilot project for sharing. The study shows that providers need financial incentive, available EVCI while not having charging as a primary business model. Users tend to have uncertainties about charging, avoid public charging, and would benefit from driver support. A digital platform enables a wide range of actors to participate, while providing payment solutions and vehicle identification. The study presents several sustainability drivers and barriers. Economic drivers include increased revenues, low-cost charging, and a possibility to invest in cheaper vehicles. Environmental drivers include improved usage, potentially fewer batteries, and supporting the sustainability transition. Social drivers include a community of sharing, easy comparison, and improving predictability. Economic barriers include limited demand, limited usage, and a lack of interest from the provider. Environmental barriers include the risk of under-utilization, overcapacity where many providers install EVCI, and the risk of stressing the grid when utilizing fast charging for large trucks. Social barriers include uncertainty about reliability, grid limitations, and a lack of trust of actors in the system.

使公路运输更具可持续性是减少排放的重要一环，而向电动货运车辆（EFV）过渡则是其中的重要一环。在这一过渡过程中，需要有可用的电动汽车充电基础设施（EVCI）。许多物流公司正在安装自己的 EVCI，主要在夜间使用。本研究通过对一个共享试点项目进行定性研究，探讨了供应商如何共享和用户如何在数字平台上预订电动汽车充电。研究结果表明，提供商需要经济激励、可用的电动汽车充电设施，同时不以充电为主要商业模式。用户往往对充电存在不确定性，避免在公共场所充电，并希望得到司机的支持。数字平台可以让广泛的参与者参与进来，同时提供支付解决方案和车辆识别。该研究提出了几个可持续发展的驱动因素和障碍。经济驱动力包括增加收入、低成本充电以及投资更廉价车辆的可能性。环境驱动因素包括提高使用率、可能减少电池数量以及支持可持续发展转型。社会驱动力包括共享社区、方便比较和提高可预测性。经济障碍包括需求有限、使用有限以及供应商缺乏兴趣。环境障碍包括利用率不足的风险、许多供应商安装 EVCI 的地方产能过剩，以及大型卡车使用快速充电时对电网造成压力的风险。社会障碍包括可靠性的不确定性、电网的局限性以及对系统参与者缺乏信任。

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引用次数: 0

Redefining the skies: How sustainable aviation fuel alters airline cost structure and market dynamics 重新定义天空：可持续航空燃料如何改变航空公司的成本结构和市场动态

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-08-02 DOI: 10.1080/15568318.2024.2397642

Forecasts by the FAA in 2022 suggest that air travel will consistently increase over the next two decades, further escalating greenhouse gas emissions. Sustainable Aviation Fuel (SAF) is pinpointed as a potent solution for greenhouse emissions. However, its higher costs compared to conventional fuels present a challenge for its adoption. We examine the economic ramifications of SAF adoption on U.S. airlines by simulating two distinct scenarios. Our results reveal a 5.9% rise in the marginal costs (MC) of Full-Service Airlines (FSAs) with a 20% SAF blend while Low-Cost Carriers (LCCs) experience only a 1% increase under the same scenario. Alternatively, using a SAF blend that is 20% cheaper in a 50–50 ratio results in an 8.8% increase in the MC of FSAs, compared to just a 2% rise for LCCs. These scenarios suggest that the cost convergence of business models observed in recent years is unlikely to be achieved.

美国联邦航空局（FAA）2022 年的预测表明，航空旅行在未来二十年将持续增长，温室气体排放量将进一步增加。可持续航空燃料（SAF）被认为是解决温室气体排放的有效方法。然而，与传统燃料相比，可持续航空燃料的成本较高，这给其应用带来了挑战。我们通过模拟两种不同的情况，研究了采用 SAF 对美国航空公司的经济影响。我们的研究结果表明，使用 20% 的 SAF 混合燃料，全服务航空公司（FSA）的边际成本（MC）将上升 5.9%，而低成本航空公司（LCC）在相同情况下的边际成本仅上升 1%。另一种情况是，以 50-50 的比例混合使用便宜 20% 的 SAF，结果是全服务航空公司的 MC 增加了 8.8%，而低成本航空公司仅增加了 2%。这些情况表明，近年来观察到的商业模式成本趋同不太可能实现。

引用次数: 0

Environmental impacts from traffic on highway construction work zones: Framework and simulations 高速公路施工作业区交通对环境的影响：框架与模拟

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-08-02 DOI: 10.1080/15568318.2024.2392624

Emissions from internal combustion engine vehicles on highways are the major contributors to global warming in the United States. Transportation sector pavement-related emissions come from gasolines and diesel use in vehicles from pavement-vehicle interaction, which is affected by pavement conditions, and by the trucking of new pavement materials and demolition. The objective of this study was to develop a framework for determining the fuel use resulting in environmental impacts caused by construction work zones (CWZs) on a range of vehicles and to produce initial calculations of these impacts by modeling traffic closure conditions for highway maintenance and rehabilitation activities. The study included two common highway categories—freeways/multi-lane highways and two-lane highways. The framework was demonstrated using three CWZ operations under different traffic congestion levels. In the simulation results for a freeway with a CWZ and heavy congestion, fuel consumption increased by 85% and the carbon-dioxide equivalent emissions increased by 86%. Changing CWZ traffic congestion from heavy (average speed 5 mph) to medium (average speed 25 mph for a freeway section) reduced fuel consumption by 40% on a freeway. This study also included use of a pilot car in a CWZ on a two-lane road typical of lower traffic volume state highways and county roads to compare with the drive cycles in MOVES used for the scenarios. The pilot-car operation scenario results indicate that a one-lane closure with pilot-car operation on a two-lane road might consume 13% excess fuel because of idling time and the slow movement of vehicles following the pilot car.

在美国，高速公路上内燃机车辆的排放是造成全球变暖的主要原因。交通部门与路面相关的排放来自车辆使用的汽油和柴油，这些排放来自路面与车辆的相互作用（受路面状况影响），以及新路面材料的卡车运输和拆除。本研究的目的是制定一个框架，用于确定施工作业区（CWZ）对各种车辆造成的环境影响所导致的燃料使用量，并通过模拟高速公路维护和修复活动的交通封闭条件，对这些影响进行初步计算。研究包括两个常见的高速公路类别--高速公路/多车道高速公路和双车道高速公路。在不同的交通拥堵水平下，使用三个 CWZ 操作演示了该框架。模拟结果表明，在一条高速公路上，CWZ 交通拥堵严重，油耗增加了 85%，二氧化碳排放当量增加了 86%。将 CWZ 交通拥堵程度从严重（平均车速 5 英里/小时）改为中等（高速公路路段平均车速 25 英里/小时）后，高速公路的油耗降低了 40%。这项研究还包括在 CWZ 的一条双车道道路上使用试验车，该道路通常是交通流量较低的国道和县道，以便与 MOVES 中用于情景模拟的驾驶循环进行比较。试验车运行情景结果表明，在双车道道路上关闭单车道并使用试验车运行可能会多耗 13% 的燃油，原因是怠速时间和试验车后方车辆的缓慢行驶。

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引用次数: 0

Two-stage multilateral trade-based prediction model for freight transport carbon emission of Belt and Road countries along Eurasian Landbridges 基于两阶段多边贸易的欧亚大陆桥 "一带一路 "沿线国家货运碳排放预测模型

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-08-02 DOI: 10.1080/15568318.2024.2392190

Global freight distribution patterns have been affected by trading policies and the pandemic outbreak. The Belt and Road Initiative, trade conflicts, and the COVID-19 pandemic have changed the global logistics flow, shifting cargos from maritime and air transport to railway transport along the countries in the Eurasian Landbridge. Though railway freight emits less carbon than road truck transportation, the increased use of railway freight brings in a higher volume of carbon emissions to cities located along the landbridges. Achieving net zero carbon emission is becoming more important, but there is a lack of literature in assessing the environmental impact of cross-border railway logistics transportation among Belt and Road countries. A novel two-stage multilateral trade-based prediction model is developed, integrating a modified gravity model and nonlinear autoregressive neural network for trade and emission forecasting. The model evaluates railway freight along the landbridge over ten years and forecasts the impact of carbon emissions from trading and logistics along the corridor in the subsequent five years. It further analyses the emissions impact of the proposed Third Eurasian Landbridge and the extended Second Eurasian Landbridge. The findings provide insights for the development of railway freight transport, considering trade and logistics flow, carbon emission mitigation strategies, and sustainability impact between China and other Belt and Road countries. While countries such as India and Kazakhstan were forecast to have significant amounts of carbon emissions in the projected period, the rapid growths in locations with smaller emission amounts such as Kunming and Georgia should draw attention and require continuous monitoring.

全球货运配送模式受到贸易政策和大流行病爆发的影响。一带一路 "倡议、贸易冲突和 COVID-19 大流行改变了全球物流流向，使欧亚大陆桥沿线国家的货物运输从海运和空运转向铁路运输。虽然铁路货运的碳排放量低于公路卡车运输，但铁路货运的增加给陆桥沿线城市带来了更高的碳排放量。实现碳净零排放正变得越来越重要，但目前缺乏文献评估 "一带一路 "国家间跨境铁路物流运输对环境的影响。本文建立了一个新颖的基于多边贸易的两阶段预测模型，将修正的重力模型和非线性自回归神经网络整合在一起，用于贸易和排放预测。该模型评估了陆桥沿线十年的铁路货运情况，并预测了随后五年走廊沿线贸易和物流产生的碳排放影响。该模型进一步分析了拟议中的第三欧亚大陆桥和扩展后的第二欧亚大陆桥的排放影响。考虑到中国与其他 "一带一路 "国家之间的贸易和物流流量、碳排放减缓战略以及可持续性影响，研究结果为铁路货运的发展提供了启示。虽然预测印度和哈萨克斯坦等国在预测期内的碳排放量较大，但昆明和格鲁吉亚等排放量较小的地区的快速增长应引起关注，并需要持续监测。

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引用次数: 0

New ways for carsharing – Can mobility as a service boost carsharing? 汽车共享的新途径--移动即服务能否促进汽车共享？

IF 3.1 3区工程技术 Q2 ENVIRONMENTAL STUDIES

International Journal of Sustainable Transportation

Pub Date : 2024-08-02 DOI: 10.1080/15568318.2024.2391885

Mobility as a Service is a potential game changer in the transition from individual motorized to sustainable and multimodal mobility in urban areas. These innovative concepts are an opportunity for existing forms of sustainable mobility to reach a broader user base and extend their service offerings. Although there are some practical examples of carsharing applications in such concepts, there is a lack of data-driven research about Mobility as a Service in practice and, above all, findings about the influence on usage behavior within such systems. We analyze usage data of the “Mobil-Flat”, a subscription-based mobility offer that integrates carsharing, public transportation, and bike sharing into a single service in a medium-sized German city, to determine the impact of Mobility as a Service on carsharing use. This results in a structured overview of the business model and the implications of such concepts on user behavior and acceptance in the context of carsharing, based on a real-world dataset.

流动即服务 "有可能改变游戏规则，改变城市地区从个人机动化向可持续和多模式流动的过渡。这些创新概念为现有的可持续交通形式提供了一个机会，使其能够接触到更广泛的用户群，并扩大其服务范围。尽管在这些概念中已有一些汽车共享的实际应用案例，但还缺乏有关 "移动即服务 "实践的数据驱动型研究，尤其是有关此类系统对使用行为的影响的研究结果。我们分析了 "Mobil-Flat "的使用数据，以确定 "移动即服务 "对汽车共享使用的影响。"Mobil-Flat "是德国一个中型城市提供的一种基于订阅的移动服务，将汽车共享、公共交通和自行车共享整合为一项服务。结果是基于真实世界的数据集，对共享汽车的商业模式和此类概念对用户行为和接受度的影响进行了结构化概述。

引用次数: 0

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