首页 > 最新文献

European Journal of Transport and Infrastructure Research最新文献

英文 中文
Modelling cellphone trace travel mode with neural networks using transit smartcard and home interview survey data 基于公交智能卡和家庭访谈调查数据的神经网络建模手机轨迹出行模式
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-10-01 DOI: 10.18757/EJTIR.2020.20.4.5429
J. Vaughan, Ahmadreza Faghih Imani, B. Yusuf, E. Miller
This study proposes a framework to impute travel mode for trips identified from cellphone traces by developing a deep neural network model. In our framework, we use the trips from a home interview survey and transit smartcard data, for which the travel mode is known, to create a set of artificial pseudo-cellphone traces. The generated artificial pseudo-cellphone traces with known mode are then used to train a deep neural network classifier. We further apply the trained model to infer travel modes for the cellphone traces from cellular network data. The empirical case study region is Montevideo, Uruguay, where high-quality data are available for all three types of data used in the analysis: a large dataset of cellphone traces, a large dataset of public transit smartcard transactions, and a small household travel survey. The results can be used to create an enhanced representation of origin-destination trip-making in the region by time of day and travel mode.
本研究提出了一个框架,通过开发深度神经网络模型,对从手机轨迹中识别的行程进行推断。在我们的框架中,我们使用来自家庭访谈调查和交通智能卡数据的旅行,其中旅行模式是已知的,来创建一组人造的伪手机痕迹。然后利用生成的具有已知模式的人工伪手机轨迹来训练深度神经网络分类器。我们进一步应用训练好的模型从蜂窝网络数据推断手机轨迹的旅行模式。实证案例研究地区是乌拉圭的蒙得维的亚,在那里,高质量的数据可用于分析中使用的所有三种类型的数据:手机痕迹的大型数据集,公共交通智能卡交易的大型数据集,以及小型家庭旅行调查。这些结果可以用来创建一个增强的代表在一天中的时间和旅行模式的始发目的地旅行。
{"title":"Modelling cellphone trace travel mode with neural networks using transit smartcard and home interview survey data","authors":"J. Vaughan, Ahmadreza Faghih Imani, B. Yusuf, E. Miller","doi":"10.18757/EJTIR.2020.20.4.5429","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.4.5429","url":null,"abstract":"This study proposes a framework to impute travel mode for trips identified from cellphone traces by developing a deep neural network model. In our framework, we use the trips from a home interview survey and transit smartcard data, for which the travel mode is known, to create a set of artificial pseudo-cellphone traces. The generated artificial pseudo-cellphone traces with known mode are then used to train a deep neural network classifier. We further apply the trained model to infer travel modes for the cellphone traces from cellular network data. The empirical case study region is Montevideo, Uruguay, where high-quality data are available for all three types of data used in the analysis: a large dataset of cellphone traces, a large dataset of public transit smartcard transactions, and a small household travel survey. The results can be used to create an enhanced representation of origin-destination trip-making in the region by time of day and travel mode.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43101294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
structural equations approach for modeling the endogeneity of lane-mean speeds considering the downstream speeds 考虑下游速度的车道平均速度内生性建模的结构方程方法
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-10-01 DOI: 10.18757/EJTIR.2020.20.4.5409
Qingying Lu
Like other transportation data, lane-mean speeds are also best modeled by a system of structural equations. Several studies omit the interrelation between adjacent lane speeds, which may produce biased and inconsistent results if models are solved by ordinary least squares. The uncorrelatedness of regressors and disturbances assumption of ordinary least squares is violated since one or more independent variables are endogenous in the system. This study attempts to propose a structural equations approach to model the lane-mean speeds in multi-lane traffic, in which the endogeneity of adjacent lane speeds and the downstream speeds are being considered. Additionally, the equations system can serve as a prediction model for lane-mean speeds. Several empirical analyses using the data collected from multi-lane freeways with different lengths and different numbers of lanes are conducted to observe the performance of the equations system in different conditions.  The study further compares the prediction accuracy between the underlying approach and the model established by Shankar and Mannering (1998) for assessing the impact of introducing downstream speeds within the model. The findings show that more precise results are obtained generally after downstream speeds are included, emphasizing the improvements and superiority of this approach.
与其他交通数据一样,车道平均速度也最好通过结构方程组进行建模。一些研究忽略了相邻车道速度之间的相互关系,如果用普通最小二乘法求解模型,可能会产生有偏差和不一致的结果。由于一个或多个自变量在系统中是内生的,因此违反了普通最小二乘法的回归和扰动假设的不迟性。本研究试图提出一种结构方程方法来模拟多车道交通中的车道平均速度,其中考虑了相邻车道速度和下游速度的内生性。此外,方程系统可以作为车道平均速度的预测模型。利用从不同长度和不同车道数的多车道高速公路收集的数据进行了几项实证分析,以观察方程组在不同条件下的性能。该研究进一步比较了基本方法与Shankar和Mannering(1998)建立的模型之间的预测精度,以评估在模型中引入下游速度的影响。研究结果表明,在考虑下游速度后,通常会获得更精确的结果,强调了该方法的改进和优越性。
{"title":"structural equations approach for modeling the endogeneity of lane-mean speeds considering the downstream speeds","authors":"Qingying Lu","doi":"10.18757/EJTIR.2020.20.4.5409","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.4.5409","url":null,"abstract":"Like other transportation data, lane-mean speeds are also best modeled by a system of structural equations. Several studies omit the interrelation between adjacent lane speeds, which may produce biased and inconsistent results if models are solved by ordinary least squares. The uncorrelatedness of regressors and disturbances assumption of ordinary least squares is violated since one or more independent variables are endogenous in the system. This study attempts to propose a structural equations approach to model the lane-mean speeds in multi-lane traffic, in which the endogeneity of adjacent lane speeds and the downstream speeds are being considered. Additionally, the equations system can serve as a prediction model for lane-mean speeds. Several empirical analyses using the data collected from multi-lane freeways with different lengths and different numbers of lanes are conducted to observe the performance of the equations system in different conditions.  The study further compares the prediction accuracy between the underlying approach and the model established by Shankar and Mannering (1998) for assessing the impact of introducing downstream speeds within the model. The findings show that more precise results are obtained generally after downstream speeds are included, emphasizing the improvements and superiority of this approach.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41983191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Editorial: A better tomorrow: towards human-oriented, sustainable transportation systems 社论:更美好的明天:走向以人为本、可持续的交通系统
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-10-01 DOI: 10.18757/EJTIR.2020.20.4.5468
C. Antoniou, Emmanouil Chaniotakis, Christos Katrakazas, Alejandro Tirachini
In a rapidly changing world, transportation is a big determinant of quality of life, financial growth and progress. New challenges (such as the emergence of the COVID-19 pandemic) and opportunities (such as the three revolutions of shared, electric and automated mobility) are expected to drastically change the future mobility landscape. Researchers, policy makers and practitioners are working hard to prepare for and shape the future of mobility that will maximize benefits.  Adopting a human perspective as a guiding principle in this endeavor is expected to help prioritize the “right” needs as requirements. In this special issue, eight research papers outline ways in which transportation research can contribute to a better tomorrow. In this editorial, we position the research within the state-of-the-art, identify the needs for future research, and then outline how the included contributions fit in this puzzle. Naturally, the problem of sustainable future transportation systems is way too complicated to be covered with a single special issue. We thus conclude this editorial with a discussion about open questions and future research topics.
在一个快速变化的世界里,交通是生活质量、金融增长和进步的重要决定因素。新的挑战(如新冠肺炎大流行的出现)和机遇(如共享、电动和自动化交通的三次革命)预计将大幅改变未来的交通格局。研究人员、政策制定者和从业者正在努力为实现利益最大化的流动性的未来做好准备和塑造。在这项工作中采用人类视角作为指导原则,有望帮助将“正确”的需求作为需求进行优先排序。在本期特刊中,八篇研究论文概述了交通研究如何为更美好的明天做出贡献。在这篇社论中,我们将研究定位在最先进的范围内,确定未来研究的需求,然后概述所包含的贡献如何适应这一难题。自然,未来可持续交通系统的问题太复杂了,无法用一本特刊来涵盖。因此,我们在结束这篇社论时讨论了悬而未决的问题和未来的研究主题。
{"title":"Editorial: A better tomorrow: towards human-oriented, sustainable transportation systems","authors":"C. Antoniou, Emmanouil Chaniotakis, Christos Katrakazas, Alejandro Tirachini","doi":"10.18757/EJTIR.2020.20.4.5468","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.4.5468","url":null,"abstract":"In a rapidly changing world, transportation is a big determinant of quality of life, financial growth and progress. New challenges (such as the emergence of the COVID-19 pandemic) and opportunities (such as the three revolutions of shared, electric and automated mobility) are expected to drastically change the future mobility landscape. Researchers, policy makers and practitioners are working hard to prepare for and shape the future of mobility that will maximize benefits.  Adopting a human perspective as a guiding principle in this endeavor is expected to help prioritize the “right” needs as requirements. In this special issue, eight research papers outline ways in which transportation research can contribute to a better tomorrow. In this editorial, we position the research within the state-of-the-art, identify the needs for future research, and then outline how the included contributions fit in this puzzle. Naturally, the problem of sustainable future transportation systems is way too complicated to be covered with a single special issue. We thus conclude this editorial with a discussion about open questions and future research topics.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44403125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Influence of floating car data quality on congestion identification 浮动车数据质量对拥堵识别的影响
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-10-01 DOI: 10.18757/EJTIR.2020.20.4.5304
Wolfgang Blumthaler, Bartosz Bursa, M. Mailer
This paper explores the usability of floating car data (FCD) of mixed quality in congestion analysis on motorways. The specific data quality aspects that we are investigating are the number and density of trajectories, the GPS interval, and the fleet representativeness. We use a dataset provided by the German Automobile Club ADAC covering the Tyrolean road network in 2016. From this dataset, trajectories along the A12 motorway were extracted for congestion analysis. These data are characterized by high GPS time interval, low number of trajectories, and are not representative for total traffic due to overrepresentation of trucks. The influence of these quality parameters on congestion identification is explored by analyzing the parameter distribution among different congestion types. In addition, we validate the results by comparing them with congestion incidents obtained from the stationary detector data (SDD) and examining the impact of quality parameters on the validation results. We find that the given data set does not allow short-term congestion patterns to be identified due to quality flaws. Especially the low number of trajectories proved problematic, whereas the influence of other parameters was less distinct. Despite these flaws, for large-scale congestion incidents, floating car data provide outcomes similar to those derived from stationary detectors.
本文探讨了混合质量的浮动车数据(FCD)在高速公路拥堵分析中的可用性。我们正在调查的具体数据质量方面是轨迹的数量和密度、GPS间隔和车队代表性。我们使用了德国汽车俱乐部ADAC提供的数据集,该数据集涵盖了2016年的蒂罗尔公路网。从该数据集中提取了A12高速公路沿线的轨迹,用于拥堵分析。这些数据的特点是GPS时间间隔高,轨迹数量少,并且由于卡车的代表性过高,不能代表总交通量。通过分析不同拥塞类型之间的参数分布,探讨了这些质量参数对拥塞识别的影响。此外,我们通过将结果与从静止探测器数据(SDD)中获得的拥堵事件进行比较,并检查质量参数对验证结果的影响,来验证结果。我们发现,由于质量缺陷,给定的数据集不允许识别短期拥塞模式。特别是低数量的轨迹被证明是有问题的,而其他参数的影响则不那么明显。尽管存在这些缺陷,但对于大规模拥堵事件,浮动汽车数据提供的结果与固定探测器得出的结果相似。
{"title":"Influence of floating car data quality on congestion identification","authors":"Wolfgang Blumthaler, Bartosz Bursa, M. Mailer","doi":"10.18757/EJTIR.2020.20.4.5304","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.4.5304","url":null,"abstract":"This paper explores the usability of floating car data (FCD) of mixed quality in congestion analysis on motorways. The specific data quality aspects that we are investigating are the number and density of trajectories, the GPS interval, and the fleet representativeness. We use a dataset provided by the German Automobile Club ADAC covering the Tyrolean road network in 2016. From this dataset, trajectories along the A12 motorway were extracted for congestion analysis. These data are characterized by high GPS time interval, low number of trajectories, and are not representative for total traffic due to overrepresentation of trucks. The influence of these quality parameters on congestion identification is explored by analyzing the parameter distribution among different congestion types. In addition, we validate the results by comparing them with congestion incidents obtained from the stationary detector data (SDD) and examining the impact of quality parameters on the validation results. We find that the given data set does not allow short-term congestion patterns to be identified due to quality flaws. Especially the low number of trajectories proved problematic, whereas the influence of other parameters was less distinct. Despite these flaws, for large-scale congestion incidents, floating car data provide outcomes similar to those derived from stationary detectors.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48520728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Editorial: Special issue of the Transport Research Days (TRDs) of BIVEC-GIBET 2019 社论:2019年BIVEC-GIBET交通研究日特刊
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-10-01 DOI: 10.18757/EJTIR.2020.20.4.5425
F. Witlox
On May 23-24 2019 the Transport Research Days (TRDs) of BIVEC-GIBET, the Benelux Interuniversity Association of Transport Researchers, took place in Ghent (Belgium). What then was common practice -- going to a conference, present your paper, and interact with people face-to-face on campus – is now, due to COVID-19, something we all again look very much forward to. The TRDs are organized biannually and offer young and established scholars from the three Benelux Countries an opportunity to present their research findings to an informed audience of transport, mobility, and logistics researchers. It is already the 8th time that the TRDs have been organized. Previous editions were held in Hasselt (2005), Rotterdam (2007), Brussels (2009), Namur (2011), Luxembourg (2013), Eindhoven (2015), Liège (2017), and Ghent (2019). And also the venue for the 9th TRD has been decided: Delft (2021). In May 2019 the TRDs were organized by the Social and Economic Geography (SEG) Research Group of the Geography Department of Ghent University. The conference theme, although general enough to welcome various mobility- and transport-related disciplines, centred around moving forward towards more sustainability mobility and transport through smart systems. In 12 different sessions devoted to Safety, Travel behaviour, Traffic flows, Freight, Climate, Accessibility, Route choice, Pricing, Cars, Ports/airports, and Travel data, the best of current transport, mobility and logistics research in the Benelux-countries was presented. The set of full papers can be found in Witlox (2019). Yes, BIVEC-GIBET keeps its tradition and still publishes (in paper form) its proceedings… Another tradition is to go for a special issue of a journal, and we are very happy that European Journal of Transport and Infrastructure Research (EJTIR) agreed to host such a SI. In total we received eight papers, three of which, after review, have been accepted. By coincidence, all three accepted papers stem from Dutch researchers. And all three are of high relevance in today’s ongoing pandemic of the coronavirus disease, although neither of the three papers refers to COVID-19 because the research was conducted prior to the pandemic.
2019年5月23日至24日,比荷卢大学间交通研究人员协会(bievc - gibet)的交通研究日(TRDs)在比利时根特举行。当时常见的做法是参加会议,发表论文,在校园里与人面对面交流,现在,由于COVID-19,我们都再次非常期待。TRDs每两年举办一次,为来自比荷卢三国的年轻学者和知名学者提供机会,向交通、交通和物流研究人员介绍他们的研究成果。这已经是第八次组织trd了。前几届在哈瑟尔特(2005年)、鹿特丹(2007年)、布鲁塞尔(2009年)、那慕尔(2011年)、卢森堡(2013年)、埃因霍温(2015年)、利奥尔日(2017年)和根特(2019年)举办。第九届TRD的举办地也已确定:代尔夫特(2021年)。2019年5月,TRDs由根特大学地理系社会与经济地理(SEG)研究小组组织。本次会议的主题虽然足够宽泛,但可以容纳各种与交通和交通相关的学科,其核心是通过智能系统向更可持续的交通和交通发展。在关于安全、旅行行为、交通流量、货运、气候、可达性、路线选择、定价、汽车、港口/机场和旅行数据的12个不同的会议上,展示了比荷卢国家当前交通、移动和物流研究的最佳成果。整套论文全文可以在Witlox(2019)中找到。是的,BIVEC-GIBET保持了它的传统,仍然以纸质形式出版其会议记录……另一个传统是出版期刊的特刊,我们很高兴欧洲运输和基础设施研究杂志(EJTIR)同意主办这样的SI。我们一共收到了8篇论文,其中3篇经过审稿,已经被录用。巧合的是,这三篇被接受的论文都来自荷兰的研究人员。这三篇论文都与今天正在进行的冠状病毒大流行高度相关,尽管这三篇论文都没有提到COVID-19,因为研究是在大流行之前进行的。
{"title":"Editorial: Special issue of the Transport Research Days (TRDs) of BIVEC-GIBET 2019","authors":"F. Witlox","doi":"10.18757/EJTIR.2020.20.4.5425","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.4.5425","url":null,"abstract":"On May 23-24 2019 the Transport Research Days (TRDs) of BIVEC-GIBET, the Benelux Interuniversity Association of Transport Researchers, took place in Ghent (Belgium). What then was common practice -- going to a conference, present your paper, and interact with people face-to-face on campus – is now, due to COVID-19, something we all again look very much forward to. \u0000The TRDs are organized biannually and offer young and established scholars from the three Benelux Countries an opportunity to present their research findings to an informed audience of transport, mobility, and logistics researchers. It is already the 8th time that the TRDs have been organized. Previous editions were held in Hasselt (2005), Rotterdam (2007), Brussels (2009), Namur (2011), Luxembourg (2013), Eindhoven (2015), Liège (2017), and Ghent (2019). And also the venue for the 9th TRD has been decided: Delft (2021). \u0000In May 2019 the TRDs were organized by the Social and Economic Geography (SEG) Research Group of the Geography Department of Ghent University. The conference theme, although general enough to welcome various mobility- and transport-related disciplines, centred around moving forward towards more sustainability mobility and transport through smart systems. In 12 different sessions devoted to Safety, Travel behaviour, Traffic flows, Freight, Climate, Accessibility, Route choice, Pricing, Cars, Ports/airports, and Travel data, the best of current transport, mobility and logistics research in the Benelux-countries was presented. The set of full papers can be found in Witlox (2019). Yes, BIVEC-GIBET keeps its tradition and still publishes (in paper form) its proceedings… Another tradition is to go for a special issue of a journal, and we are very happy that European Journal of Transport and Infrastructure Research (EJTIR) agreed to host such a SI. In total we received eight papers, three of which, after review, have been accepted. By coincidence, all three accepted papers stem from Dutch researchers. And all three are of high relevance in today’s ongoing pandemic of the coronavirus disease, although neither of the three papers refers to COVID-19 because the research was conducted prior to the pandemic.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45663377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Drones in Railways 铁路上的无人机
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-09-29 DOI: 10.18757/EJTIR.2020.20.3.4612
Omid Maghazei, M. Steinmann
Evidence shows that the applications of drones are increasing quickly in many industries. Railways are no exception. Due to fast advances in technology, drones are on the verge of breakthroughs that will affect future applications, implementations, and their consequences. Looking ahead, we elaborate on the potential for drones in railways. We use scenario planning and combine it with the findings of an action research project, which we conducted with Swiss Federal Railways (SBB). First, we explore the applications and future trends of drone use in railway operations. Second, based on seven identified factors that may affect the future of drones in railways by 2030, we develop three future scenarios: pessimistic, realistic, and optimistic. The study results help practitioners make informed decisions regarding future drone programs in railways. We also contribute theoretical insights into how high-potential technologies can unleash new capabilities in railway operations.
有证据表明,无人机在许多行业的应用正在迅速增加。铁路也不例外。由于技术的快速进步,无人机正处于突破的边缘,这将影响未来的应用、实施及其后果。展望未来,我们将详细阐述无人机在铁路领域的潜力。我们使用情景规划,并将其与我们与瑞士联邦铁路公司(SBB)进行的行动研究项目的结果相结合。首先,我们探讨了无人机在铁路运营中的应用和未来趋势。其次,基于到2030年可能影响铁路无人机未来的七个已确定因素,我们制定了三种未来情景:悲观、现实和乐观。研究结果有助于从业者对未来铁路无人机项目做出明智的决定。我们还为高潜力技术如何在铁路运营中释放新能力提供了理论见解。
{"title":"Drones in Railways","authors":"Omid Maghazei, M. Steinmann","doi":"10.18757/EJTIR.2020.20.3.4612","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.3.4612","url":null,"abstract":"Evidence shows that the applications of drones are increasing quickly in many industries. Railways are no exception. Due to fast advances in technology, drones are on the verge of breakthroughs that will affect future applications, implementations, and their consequences. Looking ahead, we elaborate on the potential for drones in railways. We use scenario planning and combine it with the findings of an action research project, which we conducted with Swiss Federal Railways (SBB). First, we explore the applications and future trends of drone use in railway operations. Second, based on seven identified factors that may affect the future of drones in railways by 2030, we develop three future scenarios: pessimistic, realistic, and optimistic. The study results help practitioners make informed decisions regarding future drone programs in railways. We also contribute theoretical insights into how high-potential technologies can unleash new capabilities in railway operations.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49270648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Death by automation: Differences in weighting of fatalities caused by automated and conventional vehicles 自动驾驶造成的死亡:自动驾驶和传统车辆造成的死亡人数的权重差异
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-09-23 DOI: 10.18757/EJTIR.2020.20.3.4515
B. Huang, S. Cranenburgh, C. Chorus
Although Automated vehicles (AVs) are expected to have a major and positive effect on road safety, recent accidents caused by AVs tend to generate a powerful negative impact on the public opinion regarding safety aspects of AVs. Triggered by such incidents, many experts and policy makers now believe that paradoxically, safety perceptions may well prohibit or delay the rollout of AVs in society, in the sense that AVs will need to become much safer than conventional vehicles (CVs), before being accepted by the public. In this study, we provide empirical insights to investigate and explain this safety paradox. Using stated choice experiments, we show that there is indeed a difference between the weight that individuals implicitly attach to an AV-fatality and to a CV-fatality. However, the degree of overweighting of AV-fatalities, compared to CV-fatalities, is considerably smaller than what has been suggested in public opinions and policy reports. We also find that the difference in weighting between AV-fatalities and CV-fatalities is (partly) related to a reference level effect: simply because the current number of fatalities caused by AVs is extremely low, each additional fatality carries extra weight. Our findings suggest that indeed, AVs have to become safer—but not orders of magnitude safer—than CVs, before the general public will develop a positive perception of AVs in terms of road safety. Ironically, our findings also suggest that the inevitable occurrence of more AV-related road accidents will in time lead to a diminishing degree of overweighting of safety issues surrounding the AV.
尽管自动驾驶汽车有望对道路安全产生重大而积极的影响,但最近由自动驾驶汽车引起的事故往往会对公众对自动驾驶汽车安全方面的看法产生强烈的负面影响。在这些事件的触发下,许多专家和政策制定者现在认为,矛盾的是,安全观念很可能会禁止或推迟自动驾驶汽车在社会上的推广,因为自动驾驶汽车需要比传统汽车更安全,才能被公众接受。在本研究中,我们提供实证见解来调查和解释这一安全悖论。通过陈述选择实验,我们发现个体对av -致死率和cv -致死率的隐含权重确实存在差异。然而,与cv死亡人数相比,av死亡人数的高估程度要比公众舆论和政策报告中建议的要小得多。我们还发现,自动驾驶汽车死亡人数和自动驾驶汽车死亡人数之间的权重差异(部分)与参考水平效应有关:仅仅因为目前由自动驾驶汽车造成的死亡人数极低,每增加一次死亡人数就会带来额外的权重。我们的研究结果表明,在公众对自动驾驶汽车产生积极的道路安全认知之前,自动驾驶汽车确实必须变得比普通汽车更安全——但不是安全的数量级。具有讽刺意味的是,我们的研究结果还表明,越来越多与自动驾驶相关的道路交通事故的不可避免的发生,将最终导致自动驾驶安全问题的过度重视程度逐渐降低。
{"title":"Death by automation: Differences in weighting of fatalities caused by automated and conventional vehicles","authors":"B. Huang, S. Cranenburgh, C. Chorus","doi":"10.18757/EJTIR.2020.20.3.4515","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.3.4515","url":null,"abstract":"Although Automated vehicles (AVs) are expected to have a major and positive effect on road safety, recent accidents caused by AVs tend to generate a powerful negative impact on the public opinion regarding safety aspects of AVs. Triggered by such incidents, many experts and policy makers now believe that paradoxically, safety perceptions may well prohibit or delay the rollout of AVs in society, in the sense that AVs will need to become much safer than conventional vehicles (CVs), before being accepted by the public. In this study, we provide empirical insights to investigate and explain this safety paradox. Using stated choice experiments, we show that there is indeed a difference between the weight that individuals implicitly attach to an AV-fatality and to a CV-fatality. However, the degree of overweighting of AV-fatalities, compared to CV-fatalities, is considerably smaller than what has been suggested in public opinions and policy reports. We also find that the difference in weighting between AV-fatalities and CV-fatalities is (partly) related to a reference level effect: simply because the current number of fatalities caused by AVs is extremely low, each additional fatality carries extra weight. Our findings suggest that indeed, AVs have to become safer—but not orders of magnitude safer—than CVs, before the general public will develop a positive perception of AVs in terms of road safety. Ironically, our findings also suggest that the inevitable occurrence of more AV-related road accidents will in time lead to a diminishing degree of overweighting of safety issues surrounding the AV.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44150904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The effect of low water on loading capacity of inland ships 低水位对内河船舶装载能力的影响
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-09-22 DOI: 10.18757/EJTIR.2020.20.3.3981
C. V. Dorsser, F. Vinke, R. Hekkenberg, M. V. Koningsveld
Temporary low water levels can have a major impact on the loading capacity of inland ships, and as a consequence on the transport capacity of the overall waterborne supply chain. Insight in the capacity reducing effect of temporarily lowered water levels is important for the design and operation of robust transport chains on the one hand, and for the optimisation of fairway maintenance and long-term infrastructure development on the other. Knowledge on the effects of low water is clearly available at the level of individual ship owners, who adapt their transport operations to changing environmental circumstances, but less accessible at an aggregated level to assess the effects on the overall transport capacity of an inland waterway network. Based on a range of field observations and information collected from individual ships, this article introduces a general model to define the effect of low water constraints on the deadweight capacity and payload of inland ships, for which only the type, length, and beam of the vessel serve as input.
暂时的低水位会对内河船舶的装载能力产生重大影响,从而影响整个水上供应链的运输能力。了解水位暂时降低的运力减少效应,一方面对稳健运输链的设计和运营很重要,另一方面对航道维护和长期基础设施开发的优化也很重要。关于低水位影响的知识在个别船东层面上是显而易见的,他们根据不断变化的环境情况调整自己的运输业务,但在综合层面上则不太容易获得,无法评估对内陆水道网络整体运输能力的影响。基于一系列现场观测和从单个船舶收集的信息,本文引入了一个通用模型来定义低水位约束对内河船舶载重量和有效载荷的影响,其中只有船舶的类型、长度和梁作为输入。
{"title":"The effect of low water on loading capacity of inland ships","authors":"C. V. Dorsser, F. Vinke, R. Hekkenberg, M. V. Koningsveld","doi":"10.18757/EJTIR.2020.20.3.3981","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.3.3981","url":null,"abstract":"Temporary low water levels can have a major impact on the loading capacity of inland ships, and as a consequence on the transport capacity of the overall waterborne supply chain. Insight in the capacity reducing effect of temporarily lowered water levels is important for the design and operation of robust transport chains on the one hand, and for the optimisation of fairway maintenance and long-term infrastructure development on the other. Knowledge on the effects of low water is clearly available at the level of individual ship owners, who adapt their transport operations to changing environmental circumstances, but less accessible at an aggregated level to assess the effects on the overall transport capacity of an inland waterway network. Based on a range of field observations and information collected from individual ships, this article introduces a general model to define the effect of low water constraints on the deadweight capacity and payload of inland ships, for which only the type, length, and beam of the vessel serve as input.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43610072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Linking experienced barriers during daily travel and transport poverty in peripheral rural areas: the case of Zeeland, the Netherlands 将周边农村地区日常旅行中遇到的障碍与交通贫困联系起来:以荷兰泽兰为例
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-09-04 DOI: 10.18757/EJTIR.2020.20.3.4076
Felix Johan Pot, Sierdjan Koster, T. Tillema, P. Jorritsma
People living in peripheral rural areas are often considered to be prone to transport poverty and inaccessibility to activities. Previous identifications of transport poverty have mainly relied on accessibility measures based on land-use and transport data. However, such measures may be very different from how people themselves perceive accessibility. Therefore, explicitly considering perceptions of accessibility may be valuable in evaluating the nature of accessibility issues such as transport poverty. By conducting semi-structured focus group discussions in Zeeland, a rural area of the Netherlands, this paper shows that the mechanisms behind transport poverty are mediated by individual perceptions of accessibility. Local social norms related to accessibility appear to be important in shaping these perceptions. In peripheral rural areas, norms reflecting the dominance of the private car add to the negative appropriation of other transport options and shape expectations with respect to accessibility. Therefore, taking account of perceptions of accessibility, and the ways these are shaped, adds to the understanding of the nature of accessibility issues and is considered vital in designing responsive policies.
生活在外围农村地区的人往往被认为容易交通贫困和无法参加活动。以前对交通贫困的识别主要依赖于基于土地使用和交通数据的无障碍措施。然而,这些措施可能与人们自己对无障碍性的看法大不相同。因此,明确考虑对无障碍的看法可能有助于评估交通贫困等无障碍问题的性质。通过在荷兰农村泽兰进行半结构化的焦点小组讨论,本文表明,交通贫困背后的机制是由个人对无障碍性的看法所调节的。与无障碍相关的地方社会规范似乎对形成这些观念很重要。在周边农村地区,反映私家车占主导地位的规范增加了对其他交通选择的负面占用,并形成了对无障碍性的期望。因此,考虑到对无障碍的看法及其形成方式,有助于加深对无障碍问题性质的理解,并被认为是制定应对政策的关键。
{"title":"Linking experienced barriers during daily travel and transport poverty in peripheral rural areas: the case of Zeeland, the Netherlands","authors":"Felix Johan Pot, Sierdjan Koster, T. Tillema, P. Jorritsma","doi":"10.18757/EJTIR.2020.20.3.4076","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.3.4076","url":null,"abstract":"People living in peripheral rural areas are often considered to be prone to transport poverty and inaccessibility to activities. Previous identifications of transport poverty have mainly relied on accessibility measures based on land-use and transport data. However, such measures may be very different from how people themselves perceive accessibility. Therefore, explicitly considering perceptions of accessibility may be valuable in evaluating the nature of accessibility issues such as transport poverty. By conducting semi-structured focus group discussions in Zeeland, a rural area of the Netherlands, this paper shows that the mechanisms behind transport poverty are mediated by individual perceptions of accessibility. Local social norms related to accessibility appear to be important in shaping these perceptions. In peripheral rural areas, norms reflecting the dominance of the private car add to the negative appropriation of other transport options and shape expectations with respect to accessibility. Therefore, taking account of perceptions of accessibility, and the ways these are shaped, adds to the understanding of the nature of accessibility issues and is considered vital in designing responsive policies.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48642847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Cold Chain Strategies for Seaports 港口冷链战略
IF 1.7 4区 工程技术 Q3 TRANSPORTATION Pub Date : 2020-08-20 DOI: 10.18757/EJTIR.2020.20.3.4074
Castelein R.B., H. Geerlings, J.H.R. van Duin
The refrigerated (‘reefer’) container market and cold logistics chains creates opportunities as well as challenges for seaports. This high-value market grows rapidly, but places stringent demands on seaports’ logistics processes, infrastructure, and energy provision. This study addresses the question how port authorities address the challenges and in this dynamic market environment. While previous research has outlined developments in port governance paradigms and the strategic scope of port authorities, the academic literature still lacks a comprehensive understanding of the policy options available to port authorities to respond to arising challenges and opportunities. To provide this missing understanding, this study presents a new dataset of policies, implemented by world’s 50 largest container ports, addressing reefer transportation and cold chain logistics. Policy measures are classified according to content, goals and scope. The findings from this worldwide comparative analysis illustrate that port authorities often pursue policies extending far beyond their traditional ‘landlord’ responsibility. Most commonly still, the scope of port policy is limited to the port cluster, where ports (co)-invest in or aim for cluster formation around cold stores. When a port extends its strategic scope towards its foreland or hinterland, this is usually aligned with policy goals formulated at higher levels of governance, such as modal shift goals or the development of domestic post-harvest distribution systems. There is however little evidence of coherent and comprehensive cold chain strategies, addressing the logistics, marketing, technology, and sustainability dimensions. The paper outlines the general tenets such a strategy should contain as a consideration for policymakers.
冷藏(冷藏箱)集装箱市场和冷物流链为海港带来了机遇和挑战。这个高价值市场增长迅速,但对海港的物流流程、基础设施和能源供应提出了严格的要求。本研究探讨港务局如何在这个充满活力的市场环境中应对挑战。虽然以前的研究概述了港口治理范式的发展和港口当局的战略范围,但学术文献仍然缺乏对港口当局应对出现的挑战和机遇的政策选择的全面理解。为了提供这种缺失的理解,本研究提出了一个新的政策数据集,该数据集由世界上50个最大的集装箱港口实施,涉及冷藏运输和冷链物流。政策措施按内容、目标和范围进行分类。这项全球比较分析的结果表明,港口当局往往奉行远远超出其传统“地主”责任范围的政策。最常见的是,港口政策的范围仅限于港口集群,其中港口(co)投资于或旨在围绕冷库形成集群。当一个港口将其战略范围扩展到其前沿或腹地时,这通常与较高治理级别制定的政策目标相一致,例如模式转变目标或发展国内收获后分配系统。然而,很少有证据表明连贯和全面的冷链战略,解决物流,营销,技术和可持续性方面的问题。该文件概述了这种战略应包含的一般原则,以供决策者考虑。
{"title":"Cold Chain Strategies for Seaports","authors":"Castelein R.B., H. Geerlings, J.H.R. van Duin","doi":"10.18757/EJTIR.2020.20.3.4074","DOIUrl":"https://doi.org/10.18757/EJTIR.2020.20.3.4074","url":null,"abstract":"The refrigerated (‘reefer’) container market and cold logistics chains creates opportunities as well as challenges for seaports. This high-value market grows rapidly, but places stringent demands on seaports’ logistics processes, infrastructure, and energy provision. This study addresses the question how port authorities address the challenges and in this dynamic market environment. While previous research has outlined developments in port governance paradigms and the strategic scope of port authorities, the academic literature still lacks a comprehensive understanding of the policy options available to port authorities to respond to arising challenges and opportunities. To provide this missing understanding, this study presents a new dataset of policies, implemented by world’s 50 largest container ports, addressing reefer transportation and cold chain logistics. Policy measures are classified according to content, goals and scope. The findings from this worldwide comparative analysis illustrate that port authorities often pursue policies extending far beyond their traditional ‘landlord’ responsibility. Most commonly still, the scope of port policy is limited to the port cluster, where ports (co)-invest in or aim for cluster formation around cold stores. When a port extends its strategic scope towards its foreland or hinterland, this is usually aligned with policy goals formulated at higher levels of governance, such as modal shift goals or the development of domestic post-harvest distribution systems. There is however little evidence of coherent and comprehensive cold chain strategies, addressing the logistics, marketing, technology, and sustainability dimensions. The paper outlines the general tenets such a strategy should contain as a consideration for policymakers.","PeriodicalId":46721,"journal":{"name":"European Journal of Transport and Infrastructure Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2020-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46640403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
期刊
European Journal of Transport and Infrastructure Research
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1