Analytical Procedures for the Evaluation of Infrastructural Measures for Increasing the Capacity of Railway Lines

Abstract

The issues that determine the capacity of railway infrastructure are topical in situations that are reaching operating limits. According to the objectives of the European transport policy, it is assumed that up to 30% of road freight over 300 km should shift to other modes such as rail or waterborne transport by 2030. The transport system should become more competitive and efficient in the use of resources. This places high demands on the railway infrastructure, which is mainly operated in a mixed transport mode, with both passengers and freight. It is necessary to increase the capacity of these lines as a priority. The intent of this paper is to propose procedures that will simply and accurately determine the quantification of benefits for increasing the throughput performance of the line. For the initial estimates and assessments of investment measures, it is advantageous to use analytical methods to determine the throughput performance. The methodological approach for determining the throughput performance in the anticipated timetable and case study were approximated on the example of the rail freight corridor marked “Amber” that passes through Slovakia. Analytical procedures have been proposed according to the methodology used on the railways of Slovakia, and the quality issues were assessed using a new approach for determining the optimal and critical throughput performance. The mentioned procedures are advantageous for assessing infrastructural measures from the point of view of a railway infrastructure manager.

Mathematical models and algorithms for determining the modes of an intelligent stage control sensor

“…Simulation of train situations for any factors, situations and parameters of seamless track circuits can be determined through the parameters of the supply transformer and information receivers, as well as by changing the shunt values by coordinates, their capacitive characteristics, seasonal changes in rail resistance and ballast resistance. In figure 4, dependencies between supply currents and supply voltages of equivalent track receiver 𝑅𝑅𝑅𝑅𝑒𝑒 and track generator 𝑒𝑒𝑒𝑒 are taken from equations (7)(8)(9)(10)(11) and are written as for the circuit in Figure 2 (prescribed circuit in Figure 4…”

“…Let us represent a continuous welded rail circuit in the form of a generalized substitution scheme [6][7][8][9][10][11] of a rail line with a locomotive receiver for normal and shunt operating regimes [12][13][14][15][16][17], where: the RL rail line, the supply transformer with internal resistance 𝑍𝑍 𝐺𝐺 , track receiver TR with internal resistance Ztr, a passing train that shunts this rail line with resistance Rsh1 and resistance Rsh2, input resistances Zinrx and Zerx of adjacent rail lines, input equivalent resistance Z'erx, directions of currents I, voltage U and are shown lengths of sections l. 1, we present rail line with a locomotive receiver as a seamless track circuit with a threshold way receiver. On fig.…”

Algorithm, mathematical models and analysis of axle counting systems

“…In other words, the system is a counting point [3], and its application with a checkpoint device [4] or a counting device [8] allows solving such tasks of railway automation and telemechanic system such as monitoring the vacancy of track sections and determining the ordinate of the rolling stock. In other words, the system is a counting point [15], and its application with a checkpoint device [17][18][19] or a counting device [16] allows solving such tasks of SZAT such as monitoring the vacancy of track sections and determining the ordinate of the rolling stock [5].…”

Evaluation Methodology of the Railway Stations Using the AHP Method in the Transport Hubs from the Freight Transport Point of View

“…There is a capacity problem at large train and yard stations on the railway network, particularly when shutting down sets of empty or loaded wagons [25]. At the same time, there is a problem with the capacity of the adjacent track sections to individual railway stations in terms of competitiveness with road freight transport, as it is in the research [26,27]. This results in a preference for road freight transport, which is more flexible and better able to meet customer requirements.…”