DETERMINATION OF MAXIMUM VISIBILITY OF RAILWAY TRAFFIC LIGHTS

Abstract

[For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version)].ABSTRACT The author examines the features of the light signaling system operating on the Bulgarian railways, designed to regulate movement of trains and ensure safety of people, goods and vehicles at railway crossings. On the basis of the heuristic approach, the maximum (limiting) range of visibility of signal lights of traffic lights is determined, a comparative analysis of data obtained in different weather conditions (including snow drifts), different time of day (day, night), at a different threshold of light sensitivity of the human eye depending on the strength of the light source (in particular, the specificity of mast and dwarf traffic lights) is suggested. Keywords: railway, light signaling, safety, traffic lights, visibility, range limits, heuristics, comparative analysis.