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Timetable Management Technique In Railway Capacity Analysis Development Of The Hybrid Of Optimization Of Train Schedules Hots Model
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Book Synopsis TIMETABLE MANAGEMENT TECHNIQUE IN RAILWAY CAPACITY ANALYSIS: DEVELOPMENT OF THE HYBRID OPTIMIZATION OF TRAIN SCHEDULES (HOTS) MODEL by :
Download or read book TIMETABLE MANAGEMENT TECHNIQUE IN RAILWAY CAPACITY ANALYSIS: DEVELOPMENT OF THE HYBRID OPTIMIZATION OF TRAIN SCHEDULES (HOTS) MODEL written by and published by . This book was released on 2015 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are two general approaches to improve the capacity in a rail corridor, either by applying new capital infrastructure investment or by improving the operation of the rail services. Techniques to evaluate the railway operation include modeling and optimization through the use of commercial timetable management and rail simulation tools. However, only a few of the existing tools include complete features of timetable management techniques (e.g. timetable compression) are equipped with an optimization model for rescheduling and timetable improvement and this is especially true when it comes to the U.S. rail environment that prevalently uses unstructured operation practices.
Book Synopsis Rescheduling/timetable Optimization of Trains Along the U.S. Shared-use Corridors by : Pasi T. Lautala
Download or read book Rescheduling/timetable Optimization of Trains Along the U.S. Shared-use Corridors written by Pasi T. Lautala and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The majority of intercity passenger and commuter rail services in the U.S. operate on the shared-use corridors with freight rail services. These types of operations tend to be challenging for efficient capacity utilization and reliability due to the high heterogeneity of trains. As passenger traffic seeks higher speed and more frequencies, the situation is likely to be exacerbated. There are two main approaches to address the challenge, either by applying new capital investment (upgrading infrastructure components), or by modifying operational characteristics and parameters of the rail services (e.g. rescheduling and timetable management techniques). This project will build on current work to apply European and U.S. simulations software on shared use corridors. The objective is to develop a capacity parametric model that uses train timetable and optimization techniques to supplement rail operations simulation analysis toward improved capacity utilization levels of a given corridor. This study will focus on two existing shared use corridors. It will continue the work already initiated on Baltimore-Washington section of the Northeast Corridor and incorporate a segment of Michigan HSR corridor. The study will be based on actual infrastructure, signaling and train characteristics and will use outputs of the European simulation packages (Railsys and/or Opentrack) as well as Rail Traffic Controller (RTC), a common simulation package in the U.S., to evaluate different traffic scenarios and operational variables of the proposed model."--
Book Synopsis Handbook of Optimization in the Railway Industry by : Ralf Borndörfer
Download or read book Handbook of Optimization in the Railway Industry written by Ralf Borndörfer and published by Springer. This book was released on 2018-03-01 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book promotes the use of mathematical optimization and operations research methods in rail transportation. The editors assembled thirteen contributions from leading scholars to present a unified voice, standardize terminology, and assess the state-of-the-art. There are three main clusters of articles, corresponding to the classical stages of the planning process: strategic, tactical, and operational. These three clusters are further subdivided into five parts which correspond to the main phases of the railway network planning process: network assessment, capacity planning, timetabling, resource planning, and operational planning. Individual chapters cover: Simulation Capacity Assessment Network Design Train Routing Robust Timetabling Event Scheduling Track Allocation Blocking Shunting Rolling Stock Crew Scheduling Dispatching Delay Propagation
Author :Fahimeh Khoshniyat Publisher :Linköping University Electronic Press ISBN 13 :9176856313 Total Pages :60 pages Book Rating :4.1/5 (768 download)
Book Synopsis Optimization-Based Methods for Revising Train Timetables with Focus on Robustness by : Fahimeh Khoshniyat
Download or read book Optimization-Based Methods for Revising Train Timetables with Focus on Robustness written by Fahimeh Khoshniyat and published by Linköping University Electronic Press. This book was released on 2016-12-01 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: With increase in the use of railway transport, ensuring robustness in railway timetables has never been this important. In a dense railway timetable even a small disturbance can propagate easily and affect trains' arrival and departure times. In a robust timetable small delays are absorbed and knock-on effects are prevented effectively. The aim of this thesis is to study how optimization tools can support the generation of robust railway traffic timetables. We address two Train Timetabling Problems (TTP) and for both problems we apply Mixed Integer Linear Programming (MILP) to solve them from network management perspectives. The first problem is how robustness in a given timetable can be assessed and ensured. To tackle this problem, a headway-based method is introduced. The proposed method is implemented in real timetables and evaluated from performance perspectives. Furthermore, the impact of the proposed method on capacity utilization, heterogeneity and the speed of trains, is monitored. Results show that the proposed method can improve robustness without imposing major changes in timetables. The second problem addressed in the thesis is how robustness can be assessed and maintained in a given timetable when allocating additional traffic and maintenance slots. Different insertion strategies are studied and their consequences on capacity utilization and on the properties of the timetables are analyzed. Two different insertion strategies are considered: i) simultaneous and ii) stepwise insertion. The results show that inserting the additional trains simultaneously usually results in generating more optimal solutions. However, solving this type of problem is computationally challenging. We also observed that the existing robustness metrics cannot capture the essential properties of having more robust timetables. Therefore we proposed measuring Channel Width, Channel Width Forward, Channel Width Behind and Track Switching. Furthermore, the experimental analysis of the applied MILP model shows that some cases are computationally hard to solve and there is a need to decrease the computation time. Hence several valid inequalities are developed and their effects on the computation time are analyzed. This thesis contains three papers which are appended. The results of this thesis are of special interests for railway traffic planners and it would support their working process. However, railway traffic operators and passengers also benefit from this study.
Book Synopsis Optimization of Schedules with Heterogeneous Train Structure in Plan-ning of Railway Lines by : Hyoung June Kim
Download or read book Optimization of Schedules with Heterogeneous Train Structure in Plan-ning of Railway Lines written by Hyoung June Kim and published by BoD – Books on Demand. This book was released on 2020-06-23 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most important things to consider before constructing a railway is the train operating program. However, the analysis of the operating program based train schedule in the railway planning stage is carried out mainly on the basis of the intuitive experiences of the planner, and the optimization of the train schedule under various conditions is not properly considered. This study analyzes the optimization of heterogeneous train scheduling structures with minimizing the weighted scheduled waiting time and with the decision of Subsidiary Main Track (SMT) for overtaking of high-speed trains on the railway line. As a way for analyzing the Optimal Train Schedule (OTS) under constraint conditions, the genetic algorithm is used. The genetic algorithm is widely applied to various optimization and decision-making problems in engineering, natural sciences, business administration, and social sciences. The proposed method can examine train schedules for more scenarios, apply quantitative evaluation criteria, and review concrete infrastructures in comparison to the existing empirical method used in South Korea.
Book Synopsis Timetable Planning and Information Quality by : Ingo A. Hansen
Download or read book Timetable Planning and Information Quality written by Ingo A. Hansen and published by WIT Press. This book was released on 2010 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book comprises a number of research papers presented at several Computers in Railways Conferences. It has been compiled by Ingo A. Hansen, President of the International Association of Railway Operations Research (IAROR) and comprises selected papers originating from different countries, such as Denmark, France, Germany, Japan, Italy, Netherlands, Sweden and Switzerland. The papers give an overview of the current state-of-the-art analytical approaches, methods and simulation tools for the modelling and analysis of network timetables, the distribution of train delays and real-time rescheduling of perturbed operations. The topics include e.g. railway capacity estimation according to the UIC norm 406, train punctuality analysis based on standard track occupation and clearance data, and boarding, alighting and distribution of passengers along suburban trains, as well as fast recognition and resolution of conflicts between train movements in case of disturbances by means of real-time speed adaptation, re-ordering or re-routing. The book can serve as an introduction to the theory of railway traffic, timetable design, operations analysis, simulation, safety and control for Master and PhD students from engineering faculties and professionals working in the railway industry.
Book Synopsis Freight Railway Crew Scheduling by : Marc Albers
Download or read book Freight Railway Crew Scheduling written by Marc Albers and published by Logos Verlag Berlin GmbH. This book was released on 2009 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this book the author presents foundations of software-based optimization approaches for crew scheduling problems of European freight railways. The focus is put on operations research methods that are used to solve mathematical crew scheduling models."--back cover.
Book Synopsis Railway Timetable Generation by : Michiel Adriaan Odijk
Download or read book Railway Timetable Generation written by Michiel Adriaan Odijk and published by . This book was released on 1997 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Railway Capacity Management and Planning by : Steven S. Harrod
Download or read book Railway Capacity Management and Planning written by Steven S. Harrod and published by . This book was released on 2007 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research presents a novel model of the railway master scheduling problem, applies it to a theoretical study of railway line capacity under representative conditions, and offers a method for applying this model to practical railway scheduling problems. Contemporary market demands for different classes of rail transportation service are not adequately served because of the inability to assess the cost to the network of disparate services, as well as the inability to determine optimal scheduling. Disputes over cost and scheduling also arise between entities managing disparate services that must share common infrastructure. This new model represents railway schedules as binary multicommodity flows on discrete time scales, mapped on a hypergraph. The objective function calculates network value as a linear combination of viable train paths, en route delay, and destination tardiness. Studies are presented that estimate the cost of imposing a non-conforming, high speed train on an existing congested, homogeneous railway network flow. The analysis is provided for two formats of single track railway and for one common format of double track railway. A significant benefit is demonstrated when track networks are configured to allow complex train interactions that are not limited to pairwise meets and passes. In addition, a novel claim is made that under some conditions of single track operation, a higher speed non-conforming train is less costly to the network. A method is proposed and demonstrated for applying this model to a practical railway network scheduling problem. When applying the model, the primary decisions are the choice of track segment boundaries and the dimension of the discrete time unit.
Book Synopsis Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems by : Yihui Wang
Download or read book Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems written by Yihui Wang and published by Springer. This book was released on 2016-04-21 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contributes to making urban rail transport fast, punctual and energy-efficient –significant factors in the importance of public transportation systems to economic, environmental and social requirements at both municipal and national levels. It proposes new methods for shortening passenger travel times and for reducing energy consumption, addressing two major topics: (1) train trajectory planning: the authors derive a nonlinear model for the operation of trains and present several approaches for calculating optimal and energy-efficient trajectories within a given schedule; and (2) train scheduling: the authors develop a train scheduling model for urban rail systems and optimization approaches with which to balance total passenger travel time with energy efficiency and other costs to the operator. Mixed-integer linear programming and pseudospectral methods are among the new methods proposed for single- and multi-train systems for the solution of the nonlinear trajectory planning problem which involves constraints such as varying speed restrictions and maximum traction/braking force. Signaling systems and their effects are also accounted for in the trajectory planning model. Origin–destination passenger demand is included in the model formulation for train scheduling. Iterative convex programming and efficient bi-level approaches are utilized in the solution of the train-scheduling problem. In addition, the splitting rates and route choices of passengers are also optimized from the system point of view. The problems and solutions described in Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems will interest researchers studying public transport systems and logistics whether from an academic or practitioner background as well as providing a real application for anybody studying optimization theory and predictive control.
Book Synopsis High-Speed Railway Operation Under Emergent Conditions by : Limin Jia
Download or read book High-Speed Railway Operation Under Emergent Conditions written by Limin Jia and published by Springer Nature. This book was released on 2021-07-17 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the current development status of high-speed railways globally and analyzes their operational schemes and practices under emergent conditions. It covers methods and problem-solving philosophy with regard to complexity analysis, capacity evaluation, passenger-flow forecasts, operating strategies, passenger-flow allocation, resource allocation and supporting technologies in the context of serious accidents and adverse environmental influences on train operation and service organization of high-speed railways. The abnormal scenarios, emergent conditions, adverse events and corresponding theoretical and applicational solutions dealing with the train operation both in line and network scale are all from real-world cases related to and designed for Chinese high-speed railway network which is the largest in scale, the highest in complexity and the most difficult in tackling with the complex and diverse climate and geographical environment , and thus makes the book both theoretically rigorous and practically applicable. It not only helps readers consider the train and network interactions from the perspective of complexity science, but also provides them with a philosophical framework and approaches available to construct their own roadmap and problem-solving paradigms in their daily research or management. This book is suitable for researchers, postgraduates and managerial and engineering practitioners in railway-related fields, especially in high-speed railway operation and emergency management.
Book Synopsis Large-Scale Crew Scheduling by : Silke Jütte
Download or read book Large-Scale Crew Scheduling written by Silke Jütte and published by Springer. This book was released on 2019-02-02 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decades, freight transportation experienced a worldwide boom. At the same time, competition increased considerably, such that efficient cost structures are indispensable for any market player. One of the main challenges a transportation company faces is the efficient employment of its personnel in operations, commonly referred to as crew scheduling. In this book the author presents solution approaches to large-scale crew scheduling. Firstly, the implementation of state-of-the-art operations research methods for a setting at a major European freight railway carrier is presented. Secondly, the author discusses acceleration techniques that make the developed algorithms applicable even in short-term contexts. While the analysis is based on European freight railway settings, the gained insights also apply to other (crew) scheduling contexts. Potential readership includes scholars and graduate students who are interested in the fields of crew scheduling and column generation as well as practitioners from transportation companies looking for new planning approaches.
Book Synopsis Railway Timetabling & Operations by : Ingo A. Hansen
Download or read book Railway Timetabling & Operations written by Ingo A. Hansen and published by . This book was released on 2014-09-12 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimization of Train Timetables in High-Speed Railway Corridors Considering Passenger Departure Time and Price Preferences by : Zhipeng Huang
Download or read book Optimization of Train Timetables in High-Speed Railway Corridors Considering Passenger Departure Time and Price Preferences written by Zhipeng Huang and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a high-speed railway (HSR) corridor, diverse train services are provided by railway companies. These different trains' features own various attributes (e.g., departure time, running speed, and fare) being the basis and focus for passengers deciding their travel. Besides, passenger's varying preference always leads to a diversity of their decision. Focusing on this problem, this paper proposed a train timetable optimization model based on departure time and pricing strategy to further analyze their impact on passengers' travel choices with a consistent operating speed, and to construct an extended time-space-fare network to visualize this process. The generalized cost of each arc in the network will be applied as a criterion for evaluating passenger selection. Then, we adapt a passenger flow allocation method based on the user equilibrium (UE) principle to allocate passenger flow to each train. Finally, a bi-level planning model is designed, where the passenger allocation is performed as the lower-level model, and the timetable decision is the upper-level one to optimize collaboratively. Moreover, a genetic algorithm integrated with the Frank-Wolfe method is designed to seek the optimal timetable and pricing strategy, and a concrete numerical example in Lanzhou-Xi'an HSR is taken to investigate the effectiveness of both the model and the algorithm.
Book Synopsis Railway Capacity Analysis by : Anders Lindfeldt
Download or read book Railway Capacity Analysis written by Anders Lindfeldt and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cyclic Railway Timetable Optimization by : Leon W. P. Peeters
Download or read book Cyclic Railway Timetable Optimization written by Leon W. P. Peeters and published by . This book was released on 2003 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Capacity Pricing and Allocation Mechanisms in Shared Railway Systems by : Maite Peña Alcaraz
Download or read book Analysis of Capacity Pricing and Allocation Mechanisms in Shared Railway Systems written by Maite Peña Alcaraz and published by . This book was released on 2015 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last 15 years, the use of rail infrastructure by different train operating companies (shared railway system) has been proposed as a way to improve infrastructure utilization and to increase efficiency in the railway industry. Shared use requires coordination between the infrastructure manager and multiple train operators. Such coordination requires capacity planning mechanisms that determine which trains can access the infrastructure at each time, capacity allocation, and the access charges they have to pay, capacity pricing. The objective of this thesis is to contribute to the field of shared railway systems coordination by 1) developing a framework to analyze the performance of shared railway systems under alternative capacity pricing and allocation mechanisms, and 2) using this framework to understand the implications of representative capacity pricing and allocation mechanisms in representative shared railway systems. There are strong interactions between capacity planning and infrastructure operations in the railway industry; the operations on the infrastructure determine the available capacity in the system. As a consequence, the framework developed in this thesis to evaluate the performance of shared railway systems under alternative capacity pricing and allocation consists of two models: 1) a train operator model and 2) an infrastructure manager model. The train operator model is a financial model that anticipates how train operators would respond to the capacity pricing and allocation mechanisms and determine their demand for infrastructure use. The infrastructure manager model is a network optimization model that determines the optimal train timetable (infrastructure manager's decisions) that accommodates the train operators' demands for scheduling trains, considering the topology of the system, safety constraints, and other technical aspects of the infrastructure for shared railway systems. To be able to solve the train timetabling optimization problem in meaningful instances, this thesis develops a novel approximate dynamic programming algorithm based on linear programming that extends previous algorithms proposed in the literature to effectively solve large network optimization problems. This thesis then uses the train operator model to compare the operational decisions of train operators in shared railway systems with the operational decisions of even-handed integrated railway companies. We show that train operators in shared railway system access charges reflect variable infrastructure manager's costs to operate trains on the infrastructure. We also identify two cases in which the train operators may have incentives to deviate from the integrated railway systems' operational decisions: 1) when the infrastructure manager needs to recover part of the infrastructure management fixed costs, or 2) when the railway system is congested. This motivates the choice of the two case studies of this thesis, one based on the Central Corridor in Tanzania, and the other one based on the Northeast Corridor in the US. We then show how to use the framework proposed in this thesis to analyze the trade-offs associated with the use of alternative mechanisms in these two cases. To our knowledge, this is the first effort to compare alternative mechanisms to price and allocate capacity in the same shared railway system. The results of this thesis show that there are important trade-offs associated with each mechanism and none of them is superior to the other on all dimensions. We thus recommend that system stakeholders carefully analyze the implications of alternative capacity pricing and allocation mechanisms before locking the system into one of them. This is particularly important today since several countries are currently restructuring their railway sector to allow shared use. We claim that the improved understanding of the system performance gained with the framework proposed in this thesis is important to be able to design adequate capacity pricing and allocation mechanisms that can mitigate the coordination problems of shared railway systems while maintaining the benefits of shared infrastructure in the railway industry.
