In order to minimise the impact on society in the case of severe disturbances affecting infrastructure systems it is essential that these systems are resilient to failures, i.e. that they are able continue operations or quickly recover a stable state after a major mishap. Numerous opportunities for taking measures to increase resilience of infrastructures exist already in the design phase of ne...

Railway nodes represent sensitive points of railway networks, the efficiency of which influences the effectiveness of network processes. Those nodes belong to the most complex service systems involving sophisticated technological processes and are equipped with quite complicated and costly technical devices. Design of those systems and the organization of their operation have to facilitate the ...

recent years have brought a great deal of expansion to the economic systems of developing countries. although they serve as vital link of economic activities, the transportation network of these countries have not grown proportionally. since transportation investments is a a substantial portion of the national budget, a good knowledge of each mode's various characteristics is essential, wh...

The demand for safety for electronic systems, especially safety critical systems, is high. Nowadays such systems are tested and simulated with a manually created set of test cases. But testing cannot reach a complete coverage for complex designs. Hence, we present a verification flow for Counting Heads for railways which are used by many electronic railway interlocking systems from SIEMENS. Our...

One of the goals of the UK research project SafeCap (Overcoming the railway capacity challenges without undermining railway network safety) is to provide railway engineers with a formal modelling framework for analysing safety and capacity of railway systems. To this end, we have proposed a “natural modelling” approach for specifying railway networks in CSP||B [4], and we are developing the cap...

This paper demonstrates the possibility to detect suspension failures of railway vehicles using a multiple-model approach from on-board measurement data. The railway vehicle model used includes the lateral and yaw motions of the wheelsets and bogie, and the lateral motion of the vehicle body, with sensors measuring the lateral acceleration and yaw rate of the bogie, and lateral acceleration of ...

This paper describes a new approach to optimisation of railway track maintenance and renewal works via genetic algorithms. Decision support systems and genetic algorithms are used in this study to optimise railway track maintenance and renewal activities. The results obtained in the scope of this study show that planned maintenance and renewal management systems can be developed and successfull...

The German transport and personal protective equipment (PPE) technical committees of the German Social Accident Insurance have laid down criteria, which have since become established, for hearing protectors to be used in railway systems and road traffic in Germany: only hearing protectors which do not significantly impair the audibility of auditory warning signals may be used. In addition, the ...

This paper demonstrates the possibility to detect suspension failures of railway vehicles using a multiple-model approach from on-board measurement data. The railway vehicle model used includes the lateral and yaw motions of the wheelsets and bogie, and the lateral motion of the vehicle body, with sensors measuring the lateral acceleration and yaw rate of the bogie, and lateral acceleration of ...

DLR’s Vehicle System Dynamics group has a long tradition in the computational analysis of railway vehicles’ dynamics. The group’s main focus used to be on the development of software tools for the efficient analysis of general mechanical systems with a special emphasis on the dynamics of ground vehicles like automobiles, railway vehicles and aircraft landing gears. The respective research activ...