Source: https://www.sncf-reseau.com/sites/default/files/2020-02/IG04034%20-%20R%C3%A8gles%20d%27admission%20des%20mat%C3%A9riels%20roulants%20sur%20le%20RFN%20en%20fonction%20de%20la%20sollicitation%20de%20la%20voie.pdf