Journal of Rail Transport Planning & Management最新文献

{"title":"Capacity evaluation of ERTMS/ETCS hybrid level 3 using simulation methods","authors":"Daniel Knutsen ,&nbsp;Nils O.E. Olsson ,&nbsp;Jiali Fu","doi":"10.1016/j.jrtpm.2024.100444","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2024.100444","url":null,"abstract":"<div><p>This paper evaluates the capacity effect of ERTMS/ETCS Hybrid Level 3 (HL3, also known as Hybrid Train Detection, HTD) on a conceptual level by looking at a scenario with two trains and on a network level. Key performance indicators help evaluate the results of implementing HL3: headway for the conceptual model and capacity utilization and punctuality for the network level. The study uses the simulation tool RailSys for both levels. A case study on the interaction between two trains examines how various lengths of virtual blocks affect the performance indicator headway. The network scale simulations use a real-world infrastructure and a complete timetable. Two cases examine how the performance indicators capacity utilization and punctuality are affected by the share of Level 2 and Level 3 trains in a HL3 system. Results from the conceptual two-train interaction show that HL3 slightly improves the headway, but it is similar for varying virtual block lengths. The results from the network model indicate the share of Level 2 and Level 3 trains has minimal effect on punctuality and capacity utilization. However, we identified some factors influencing the HL3 capacity evaluation, like stations and switches on the line, that affect the potential capacity gains.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"30 ","pages":"Article 100444"},"PeriodicalIF":3.7,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2210970624000143/pdfft?md5=e19ea3738fdb1382f0580a8d524fa8f4&pid=1-s2.0-S2210970624000143-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140540050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the intra-platoon planning problem for heterogeneous train traffic under virtual coupling in the railway network via simulation","authors":"Jiamin Zhang","doi":"10.1016/j.jrtpm.2024.100442","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2024.100442","url":null,"abstract":"<div><p>Study on the platoon planning of virtual coupling (VC) is indispensable for both passenger and freight railway operation in terms of capacity, scheduling, and timetabling. As an advanced technology in train operation and control systems, VC can significantly improve the performance of rail operations, with regards to capacity, flexibility and robustness. In this study, we mainly focus on the former one, i.e., to maximize the capacity gains, by employing the relative braking distance based spacing policy for heterogenous train traffic. To our knowledge, this article is the first to address the VC intra-platoon planning problem for a railway network. The main function/purpose of this study is to decide a leader train and allocate an order to the heterogeneous follower trains for the virtually coupled platoon in the off-line mode. The objective is transformed to minimize and compare the sum of minimum safe distance for platoons on the common shared route sections in the railway network from various perspectives, so as to seek the desirable orders of potential train consists within the platoons from the perspective of the whole railway network. Our contributions are mainly threefold. First, the conditions for train platooning under virtual coupling are synthesized. Second, the solution flow charts and algorithms for simulation are proposed, including general framework for simulation, classification of prioritizing the shared common route section, and flow charts and algorithms for decision of coupling order to train platoons. Finally, the proposed methodology was tested and discussed on the designed computational experiment (i.e., numerical simulations of a typical case study with two sets of test examples) via NetLogo platform. The numerical simulation results series revealed some key findings and validated the effectiveness of the proposed methodology. Results of this study can provide guidance to decision makers in timetabling and potential capacity bottleneck identification under VC. We believe that it is worth investigating and further advancing this research direction in the future.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"30 ","pages":"Article 100442"},"PeriodicalIF":3.7,"publicationDate":"2024-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221097062400012X/pdfft?md5=b3a357ffda94d0c9b4ddee02439d29f1&pid=1-s2.0-S221097062400012X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140535119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microscopic railway capacity assessment of heterogeneous traffic under real-life operational conditions","authors":"Jan Lordieck ,&nbsp;Michael Nold ,&nbsp;Francesco Corman","doi":"10.1016/j.jrtpm.2024.100446","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2024.100446","url":null,"abstract":"<div><p>A key strategy for increasing railway capacity is utilizing infrastructure more efficiently. While much research has been completed on methods for assessing railway capacity, very little has focused on the details of capacity utilisation, such as assessing the various ways trains use capacity, the impacts of specific blocking time components, and how train dynamics (accelerating, cruising, braking, and dwelling) affect capacity.</p><p>This paper presents a methodology for comparing planned occupancy to actual occupancy under real operations and applies it in a case study. The methodology is based on identifying a critical path which represents an extension of bottleneck concept presented in UIC leaflet 406. The methodology was applied in a case study to determine the specific blocking times and train dynamics which cause a blocking time gap for a sequence of trains, both a-priori and a-posteriori, after considering the operational variations. The analysis of real operations with variations in train trajectories shows that capacity occupation is mostly influenced by train sequence heterogeneity in the original schedule. The varying effects of operations have a smaller but relevant impact. The methods developed in this paper can be used to help assess railway capacity under real operations.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"30 ","pages":"Article 100446"},"PeriodicalIF":3.7,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2210970624000167/pdfft?md5=0714c5b50e1758faf3265f41db5456a1&pid=1-s2.0-S2210970624000167-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140350395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of railway incidents on train delays: A case of the Swedish Railway Network","authors":"Grace Mukunzi,&nbsp;Carl-William Palmqvist","doi":"10.1016/j.jrtpm.2024.100445","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2024.100445","url":null,"abstract":"<div><p>A foreseeable challenge with a substantial increase in railway mode share will be how to uphold punctuality. Higher volumes of train traffic will result in timetables that are more sensitive to disruptions; whose severity and frequency is also expected to increase in light of greater asset utilization and climate change. This calls for a definitive understanding of the relationship between incidents and train delays as a prerequisite to developing robust timetables and disruption management strategies. In this paper we propose a novel framework for quantifying the impact of railway incidents on train delays. Using a case of the Swedish Railway Network, we compare the impact of different incidents on train delays. The impact of delay is defined as a factor of the incident rate, exposure rate, delay rate and historical average delay minutes per incident. A logistic model that estimates the probability of delay for any train, in the event of a failure, is also developed. Snow on track was established as most critical, resulting in the highest normalized delay minutes per train and the largest increase in the odds of delay for individual trains. The proposed framework &amp; approach can be applied to other networks.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"30 ","pages":"Article 100445"},"PeriodicalIF":3.7,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2210970624000155/pdfft?md5=d2201864a47f736af33bf50261b979da&pid=1-s2.0-S2210970624000155-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140328221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review and trends in regenerative braking energy recovery for traction power system with inverter substation in subway’s of São Paulo city","authors":"Carlos Alberto de Sousa,&nbsp;Sergio Luiz Pereira,&nbsp;Ruan Streitenberger Guedes","doi":"10.1016/j.jrtpm.2024.100443","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2024.100443","url":null,"abstract":"<div><p>Energy and environmental sustainability in transportation are becoming ever more important. In Brazil, the system electric traction represents the largest consumption of electric energy in the subway system. Electrified railway systems play an important role in contributing to the reduction of energy usage and CO2 emissions compared with other transport modes. For subway transit systems with frequently cycles of departures and braking of trains, the effective use of regenerative braking energy is a significant way to reduce the net energy consumption. The recovery of regenerative energy produced by braking trains of a subway system is essential to increase its energy efficiency, however difficult to apply in the São Paulo subway due to the short headway between train. This paper proposes evaluate through traction power network modeling and the computer simulation the application and feasibility of using inverter substation (ISS) to maximize the recovery of regenerative braking energy. The results of the study of Line 1 - Blue of the São Paulo’s metro city indicate that using inverter substation could reduce the energy consumption at the rectifier substation (RSS) by nearly 12,94% compared to the system without the inverter substation.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"30 ","pages":"Article 100443"},"PeriodicalIF":3.7,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140309450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Approximating rolling stock rotations with integrated predictive maintenance","authors":"Felix Prause,&nbsp;Ralf Borndörfer,&nbsp;Boris Grimm,&nbsp;Alexander Tesch","doi":"10.1016/j.jrtpm.2024.100434","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2024.100434","url":null,"abstract":"<div><p>We study the solution of the rolling stock rotation problem with predictive maintenance (RSRP-PdM) by an iterative refinement approach that is based on a state-expanded event-graph. In this graph, the states are parameters of a failure distribution, and paths correspond to vehicle rotations with associated health state approximations. An optimal set of paths including maintenance can be computed by solving an integer linear program. Afterwards, the graph is refined and the procedure repeated. An associated linear program gives rise to a lower bound that can be used to determine the solution quality. Computational results for six instances derived from real-world timetables of a German railway company are presented. The results show the effectiveness of the approach and the quality of the solutions.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"30 ","pages":"Article 100434"},"PeriodicalIF":3.7,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140041926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Service quality assessment of international rail transport with multiple border crossings: Eurasian rail transport as an example","authors":"Jing Shan ,&nbsp;Nikola Bešinović ,&nbsp;Jörn Schönberger","doi":"10.1016/j.jrtpm.2024.100432","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2024.100432","url":null,"abstract":"<div><p>International rail transport plays an essential role in the supply chain. Eurasian rail transport has been a successful example since its launch in 2011 and has increased over the last decade. However, a crucial question arises: Does this intercontinental rail service fulfill the transport requirements of the supply chain, and can it be quantified? Cost, reliability, transport time, and flexibility are essential factors in selecting transport modes in the supply chain. Current performance parameters mainly focus on efficiency, which may conflict with supply chain performance requirements. Before this research, it was difficult to quantify the international rail services; the frequently used tonne-based, volume-based (TEU), number of block trains, loaded, or empty container measurement forms cannot adequately capture the requirements of the global supply chain. Our literature review highlighted the need for standardized service attributes in international rail transport. Additionally, we identified a misalignment between rail performance and the demands of the global supply chain. This misalignment could impede the integration of international rail transport into the global supply chain. This paper contributes by developing universally applicable SCOR-Rail Key Performance Indicators (KPIs) for international rail transport based on the Supply-chain Operations Reference (SCOR) model. It bridges the measurement gap between the supply chain and international rail transport, giving railway companies a tool to design and monitor their services. They could also be easily integrated into rail planning for future research. Our initial assessment based on the proposed measurement framework revealed that Eurasian rail transport has the potential for improvement.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"29 ","pages":"Article 100432"},"PeriodicalIF":3.7,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2210970624000027/pdfft?md5=f7c33debf5a07012e366dc60f1d7cd0e&pid=1-s2.0-S2210970624000027-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139738747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting and measuring service disruption recovery time in railway gravity hump classification yards","authors":"Jiaxi Zhao,&nbsp;C. Tyler Dick","doi":"10.1016/j.jrtpm.2024.100433","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2024.100433","url":null,"abstract":"<div><p>Planned maintenance and unplanned incidents cause service disruptions in freight railway classification yards, creating congestion, delaying railcars, and even impacting mainline operations. Understanding the recovery time and lingering performance impacts of yard disruptions is vital for the industry to plan disruption responses, promote efficient resource utilization, and improve resiliency. This paper compares two major types of yard disruptions (temporary closures of hump process and pulldown process) and quantifies the recovery pattern, measured by multiple performance metrics. The authors propose an analytical approach for estimating classification yard recovery time as a function of disruption duration and baseline capacity utilization. To validate the hypothetical approach, a series of experiments are conducted across a wide range of disruption durations and throughput volumes in a representative hump classification yard simulation model constructed using AnyLogic. The results indicate that recovery time is proportional to shutdown duration with a near constant recovery rate, and recovery rate increases approximately exponentially with throughput volume. These results are consistent with the hypothesized analytical relationships, suggesting that yard capacity may be estimated from disruption recovery rate. The methodology developed also enables future studies on interactions between yards and mainlines and developing planning-level parametric models of classification yard capacity and performance.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"29 ","pages":"Article 100433"},"PeriodicalIF":3.7,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2210970624000039/pdfft?md5=e114b27a203c8216aacc9a0b6acd09d7&pid=1-s2.0-S2210970624000039-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139738748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding dwell times using automatic passenger count data: A quantile regression approach","authors":"Ruben A. Kuipers","doi":"10.1016/j.jrtpm.2024.100431","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2024.100431","url":null,"abstract":"<div><p>Accurately scheduling dwell times is vital to ensure punctual and reliable railway services, but the stochastic nature of dwell times makes this a non-trivial task. An important step towards scheduling accurate dwell times is to gain an in-depth understanding of the mechanics that influence dwell times, which is commonly done by modelling the mean dwell time. It is, however, of more interest to understand the conditional distribution of dwell times. The study presented here proposes the use of quantile regression to study the conditional distribution of dwell times at different percentile. To do so, a year's worth of highly detailed train operation and passenger count data is used. The results indicate that the use of quantile regression over ordinary least squares regression is justifiable and beneficial. Numerical examples show the importance of arrival punctuality on dwell times, whereas the effect of the volume of boarding passengers at the critical door is limited. The results of the model presented here can help steer the discourse towards scheduling dwell times that more accurately reflect the actual situation by taking station-specific parameters into account. Doing so will help to increase the punctuality of railways and with it the attractiveness and effectiveness of railways.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"29 ","pages":"Article 100431"},"PeriodicalIF":3.7,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2210970624000015/pdfft?md5=9110bba356669240b2af74e8afd7056f&pid=1-s2.0-S2210970624000015-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139654213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards self-organizing railway traffic management: concept and framework","authors":"Leo D’Amato ,&nbsp;Federico Naldini ,&nbsp;Valentina Tibaldo ,&nbsp;Vito Trianni ,&nbsp;Paola Pellegrini","doi":"10.1016/j.jrtpm.2023.100427","DOIUrl":"https://doi.org/10.1016/j.jrtpm.2023.100427","url":null,"abstract":"<div><p>Railway traffic management requires a timely and accurate redefinition of routes and schedules in response to detected perturbations of the original timetable. To date, most of the (automated) solutions to this problem require a central authority to make decisions for all the trains in a given control area. An appealing alternative is to consider trains as intelligent agents able to self-organize and determine the best traffic management strategy. This could lead to more scalable and resilient approaches, that can also take into account the real-time mobility demand. In this paper, we formalize the concept of railway traffic self-organization and we present an original design that enables its real-world deployment. We detail the principles at the basis of the sub-processes brought forth by the trains in a decentralized way, explaining their sequence and interaction. Moreover, we propose a preliminary proof of concept based on a realistic setting representing traffic in a French control area. The results allow conjecturing that self-organizing railway traffic management may be a viable option, and foster further research in this direction.</p></div>","PeriodicalId":51821,"journal":{"name":"Journal of Rail Transport Planning & Management","volume":"29 ","pages":"Article 100427"},"PeriodicalIF":3.7,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2210970623000598/pdfft?md5=98ccdb7b7a74ff9a11501514db5ce456&pid=1-s2.0-S2210970623000598-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139100016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}