Comparative Assessment of Virtual Track Circuit Based on Image Processing

Abstract

For urban rail track, it is important to detect the presence of the tram or light train in black spots (like urban tunnels, bridges and low visual contact). The classical solution is to use track circuit which is safety oriented designed. The paper proposes a virtual track circuit as an alternative solution. For this proposal a comparative assessment was done to identify the main issues of this solution. For both systems analysed the authors defined and calculated two special functions: one is safety function which is a probability function (together with a distribution function) and the second one is error function which has the same type as previous one.

Keywords

Virtual track circuit / Probability function / Comparative assessment / Railway safety

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