The article considers the possibility of using a modular concept for placing and fixing various kinds of goods with the help of an innovative method of using fitting stops for transportation by rail fitting platforms. It was noted that an increase in the efficiency of rail transport is facilitated by the expansion of the nomenclature of goods transported on a specialized rolling stock. Conditions for the use of fittings for the transportation of long rails have been analyzed, and also the shortcomings of the existing technology of locating and fastening goods have been revealed. A method is suggested, the application of which will allow expanding the range of goods transported on one of the types of rolling stock - fitting platforms. The conducted researches confirm the technological effectiveness and economic attractiveness of the modular concept of the use of fitting platforms. It is noted that giving the specialized rolling stock the properties of universality will help expand the scope of use of a fleet of cars of this type. Further implementation of the necessary technical and economic calculations and tests is planned for the practical implementation of the developed concept of the transportation of long goods on fitting platforms.