The article deals with the issues of hot areas occurring in friction disc brakesbased on the literature review. The results of stand tests of the railway disc brake in aspect of identifying the hot areas of hot-spots are presented. In addition, the test methodology with the use of a thermovision camera for observation and registration of hot areas is developed for the stand tests.Thermovision images from the various braking speeds, where there are hot-spots, are presented for the friction pair of cast-iron brake disc and organic friction lining according to the requirements of UIC 541-3 leaflet. A model to determine the number of macroscopic hot areas on the surface of the brake disc is developed on this basis.The model is verified for braking with a greater emphasis regarding the fundamental tests.
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