Simulation of the Effect of Selected National Values on the Braking Curves of an ETCS Vehicle

Koper, Emilia; Kochan, A.; Gruba, Łukasz

doi:10.1007/978-3-030-27547-1_2

Cited by 6 publications

(9 citation statements)

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“…However, if the ETCS L2 system with optimized sections were applied on the line, we would achieve at least the same occupancy time as at present with the automatic block. It should also be emphasized that rail safety increases with each increasing level of ETCS, however, only on the condition that each train is equipped and supervised by ETCS [38,39]. The graph in Figure 13 compares the practical throughput of individual variants.…”

Section: Discussionmentioning

confidence: 99%

Traffic Capacity Assessment of the Selected Track Section on the Slovak Railways Network after the Implementation of ETCS L3 Based on Signaling Principle

et al. 2022

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In the field of railway operation, it is essential to establish uniform conditions for interconnectivity requirements and compatibility of equipment in the Pan-European railway area to ensure effective interoperability. It also includes, for example, the introduction of a control system with modern and advanced interlocking systems (safety devices). The European Train Control System (ETCS) is a single European train protection system that will increase safety in rail transport. Nevertheless, this system may have an impact on the throughput on those railway lines where it is applied. The main research objective is to determine the impacts and effects of the configuration of track signaling equipment on the operational management of traffic and especially on the creation of a traffic plan. The optimization of transport processes on the railway infrastructure means creating the conditions for achieving higher throughput performance, especially including a higher number of train paths into the train traffic diagram. This paper examines and compares the impacts of ETCS and its levels (in particular ETCS L3) on the practical throughput of the selected national infrastructure manager. A heuristic procedure is used with the application of the analytical methodology of the Railways of the Slovak Republic (ŽSR), which uses the principles of mathematical statistics and probability. Significant comparative indicators are occupancy times and the degree of utilization of practical throughput. These are used in investment decisions in the modernization of line sections to achieve interoperability of the railway system.

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Section: Discussionmentioning

confidence: 99%

Traffic Capacity Assessment of the Selected Track Section on the Slovak Railways Network after the Implementation of ETCS L3 Based on Signaling Principle

et al. 2022

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“…Braking curves are helpful in analysing the braking behaviour with respect to a certain distance between distant signal and signal, as well as to the point of danger. Of particular interest in this context is the probabilistic nature of the braking behaviour, as the probability density of the braking distances is used in safety analyses of the train protection system [25,26]. The safety of the system under consideration can be assessed by help of a probabilistic braking curve analysis.…”

Section: Braking Curves and Braking Distance Distributionsmentioning

confidence: 99%

Braking distance prediction for vehicle consist in low-speed on-sight operation: a Monte Carlo approach

Pfaff

2023

Rail. Eng. Science

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The first and last mile of a railway journey, in both freight and transit applications, constitutes a high effort and is either non-productive (e.g. in the case of depot operations) or highly inefficient (e.g. in industrial railways). These parts are typically managed on-sight, i.e. with no signalling and train protection systems ensuring the freedom of movement. This is possible due to the rather short braking distances of individual vehicles and shunting consists. The present article analyses the braking behaviour of such shunting units. For this purpose, a dedicated model is developed. It is calibrated on published results of brake tests and validated against a high-definition model for low-speed applications. Based on this model, multiple simulations are executed to obtain a Monte Carlo simulation of the resulting braking distances. Based on the distribution properties and established safety levels, the risk of exceeding certain braking distances is evaluated and maximum braking distances are derived. Together with certain parameters of the system, these can serve in the design and safety assessment of driver assistance systems and automation of these processes.

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“…Different situations at level crossings are analysed in [23]. An important element of this study is progressive and innovative level crossing technologies, as discussed in [24][25][26].…”

Section: Literature Reviewmentioning

confidence: 99%

Proposed Methodology for the Calculation of Overview Distances at Level Crossings and the Inclusion Thereof in National Standards

2020

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The aim of this article is to find a rational solution for increasing the safety of level crossings in the Czech Republic on the basis of a set of representative level crossings. The Czech Republic was deliberately chosen because of its geographical location, the number of level crossings on the network, and because, according to statistics from the Rail Safety Inspection Office, the country ranks as one of the highest for the number of accidents at level crossings. The rational solution being sought is one that achieves a balance between legislative, technical, and awareness-raising measures. In the practical part, great emphasis is placed on the assessment of the current state of Czech legislation. The identified discrepancies are resolved by adjusting calculations for overview distances and proposing changes to incorrect provisions. The main contribution of this paper is the comprehensive overview that it provides of level crossings and their safety. This overview includes a description of the current state of affairs, i.e., the number of level crossings, their location, classification, construction and type of equipment used, as well as an analysis of accidents and their frequency. The latter is in relation to the proposed construction and technical solution and subsequent assessment of the rationalisation possibilities and investments required to reconstruct or remove existing level crossings, thereby affecting the accident rate.

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Simulation of the Effect of Selected National Values on the Braking Curves of an ETCS Vehicle

Cited by 6 publications

References 0 publications

Traffic Capacity Assessment of the Selected Track Section on the Slovak Railways Network after the Implementation of ETCS L3 Based on Signaling Principle

Traffic Capacity Assessment of the Selected Track Section on the Slovak Railways Network after the Implementation of ETCS L3 Based on Signaling Principle

Braking distance prediction for vehicle consist in low-speed on-sight operation: a Monte Carlo approach

Proposed Methodology for the Calculation of Overview Distances at Level Crossings and the Inclusion Thereof in National Standards

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