The article represent the presumptive experience of the different legend systems designing for such maps as: sea navigational maps, educational maps, and maps of the electronic urban underground pipeline; and approaches to the three-demensional realistic cartographic models’ making. Among all mentioned systems, the methods of making the sea navigational maps legend system was practically approved. The methods of making the electronic urban underground pipeline maps was partly-approved; in particular a map of power grid (electrical and thermal). The scientific and economic importance of the logical rules elaboration was accentuated, as well as theoretical theses of the legend system designing methodic, and modernization and improvement of the designing.
The further perspectives of the research are outlined, namely the main approaches and general principles of the legend system designing substantiation, adjusted for the thematic orientation of the maps.
Keywords: the legend system, the legend, modernization, improvement, effectiveness, designing, logical systematicity.