The white book, revealed in 2001, governs and contains the main objectives that the European Union set on the horizon of 2010 in the domain of the railroad safety. The member States answered these impulses by taking the three packets of the white book as reference mark to the national regulation. This regulation, that is in perpetual evolution, gave birth not only to various actors who intervene in setting up safety of all railway system but also to a lot of files circulating between them. Nevertheless, in spite of the incontestable importance of this regulation, it collides with the absence of a tool that helps the experts of the domain to capitalize it and to exploit it in a rigorous manner. Our article aims at bringing an element of answer to this need by proposing a tool of help to the capitalization and the exploitation of the regulations in the railroad safety.