This paper presents a new software tool for automatic creation of simulation models for flow lines. The tool was developed in a general way. The tool was applied to the production flow line at the rolling stock Company Bombardier Transportation Portugal, SA, in Amadora, in order to develop its simulation model. Information regarding manufacturing philosophies, flow assembly lines, production sc...

In this paper we describe a two-stage optimization model for determining robust rolling stock circulations for passenger trains. Here robustness means that the rolling stock circulations can better deal with large disruptions of the railway system. The two-stage optimization model is formulated as a large Mixed-Integer Linear Programming model. We first use Benders decomposition to determine op...

NedTrain is the Netherlands Railway’s subsidiary responsible for rolling stock maintenance. The life cycle is 30-40 years where the asset condition is maintained to meet it’s performance requirements and is enhanced to meet the customer expectations through it’s life. The life cycle costs are roughly 1/3 for the new build investment and 2/3 for subsequent maintenance and further investments. Cu...

This paper deals with real-time disruption management of rolling stock in passenger railway transportation. We describe a generic framework for dealing with disruptions of railway rolling stock schedules. The framework is presented as an online combinatorial decision problem, where the uncertainty of a disruption is modeled by a sequence of information updates. To decompose the problem and to r...

abstract the purpose of this paper is to investigate the relationship between capital stock and increasing the productivity of labor and total factor productivity (tfp) in industrial groups of khorasan razavi province from 2003 to 2007. in order to this first, the available literature in this area and the importance of productivity was reviewed, also the history of productivity in asia and the ...

We present a generic mathematical modeling approach for solving rolling stock scheduling problems. Our approach is based on a time-space network and a multi-commodity flow model; in order to deal with the various types of rolling stock scheduling problems faced by SNCF planners, it integrates numerous modeling settings and features including maintenance routing requirements which are treated by...

In this paper we explore the possibility of applying the notions of Recoverable Robustness and Price of Recoverability (introduced by [5]) to railway rolling stock planning, being interested in recoverability measures that can be computed in practice, thereby evaluating the robustness of rolling stock schedules. In order to lower bound the Price of Recoverability for any set of recovery algorit...

Increased railway patronage worldwide is putting pressure on rolling stock and infrastructure to operate at higher capacity and with improved punctuality. Condition monitoring is seen as a contributing factor in enabling this and is highlighted here in the context of rolling stock being procured with high capacity data buses, multiple sensors and centralised control. This therefore leaves scope...

The aim of this paper is to propose an integrated planning model to adequate the offered capacity and system frequencies to attend the increased passenger demand and traffic congestion around urban and suburban areas. The railway capacity is studied in line planning, however, these planned frequencies were obtained without accounting for rolling stock flows through the rapid transit network. In...

This paper addresses the Rolling Stock Balancing Problem (RSBP). This problem arises at a passenger railway operator when the rolling stock has to be re-scheduled due to changing circumstances. These problems arise both in the planning process and during operations. The RSBP has as input a timetable and a rolling stock schedule where the allocation of the rolling stock among the stations does n...