This work is focused on important characteristic of horizontal road marking, which is night-time visibility, or retroreflection. Introductoty part deals with characteristics of horizontal road marking with emphasis on night-time visibility, contains summary of materials used for marking, material on drop, and also various kinds and technologies of application of horizontal marking. Next part is devoted to methods of measurement and their description including equipment for measurement. In the practical part there are listed data from measurement of retroreflection made on test area and on chosen areas of roads and also evaluation of measured data. End of this work includes obtained knowledges and review summary.