The railway vehicles are complex oscillator systems featuring specific vibration characteristics. The symmetrical and antisymmetrical vibration modes represent a property of the railway vehicle vibrations, due to its symmetry in construction. The paper describes the excitation mechanism of the symmetrical and antisymmetrical modes in a vertical plan of a railway vehicle on a track with irregula...

We consider delay management in railway systems. Given delayed trains, we want to find a waiting policy for the connecting trains minimizing the weighted total passenger delay. If there is a single delayed train and passengers transfer at most twice along fixed routes, or if the railway network has a tree structure, the problem can be solved by reduction to min-cut problems. For delayed passeng...

In recent years there has been intensive research and development in the application of wireless sensor network (WSN) technologies to various sectors such as healthcare, home automation, environmental monitoring and the monitoring of large structures, eg, buildings and bridges. The monitoring of railway infrastructure such as the tracks, bearers and sleepers is another area that could potential...

Railway optimization problems have been studied from a mathematical programming perspective for decades. This approach is particularly well suited to model the multitude of constraints that typically arises in the context of a railway system. In recent years, these problems have attracted some attention in the algorithms community, with a focus on individual problem aspects, in an attempt to un...

in this paper, we develop a freight transportation model for railway network considering hazmat transportation issue. in the transportation system considered, different customers can request for carrying hazmat and non- hazmat boxes. it is assumed that the sequence of the trains in the network is known. the objective is assigning the non-hazmat boxes and hazmat boxes to wagons of the trains so ...

Railway Scheduling is considered to be a difficult and time-consuming task. Despite real railway networks being modelled as Constraint Satisfaction Problems (CSPs), they require a huge number of variables and constraints. The general CSP is known to be NP-complete; however, distributed models may reduce the exponential complexity by dividing the problem into a set of subproblems. In this work, ...

A “bonus” of 5 dB has been applied to railway noise in most European Union (EU) countries, e.g. Austria, Germany, France and Sweden. The reason for this is that the majority of international and Swedish studies show that railway noise is less annoying than road traffic noise and aircraft noise (Miedema & Oudshoorn 2001; EU position paper 2002). According to the meta-analysis (Miedema & Oudshoor...

Abstract— In most situations, human and machines are linked in one system and accidents occur in most of them; but, there are no systematic procedures for reporting them. The present work is focused on developing a more scientific methodological approach which applies to reduce train accidents and in particular to improve safety in railway tunnels. The aim of our work is the development of a me...

Medical and informational supply of the system liquidating the consequences of accidents concerning the dangerous railway goods was analysed. Emergency cards of dangerous railway goods were described as a new type of medical and technical information. 130 of such cards concerning 567 dangerous railway goods were published in 1984, additional prophylactic sections of emergency cards for 400 subs...

Scheduling trains on a single railway line is an issue in it own right, and is a building block for scheduling trains in railway networks. A local, state dependent, travel advance strategy combined with a discrete event model of a railway line represent a more efficient way of approaching the scheduling problem than nonlinear programming approaches used in the past. The approach also eliminates...