rails laid parallel to a running rail to guide wheels through points and round curves, to reduce wear and the risk of derailments due to flange climb
(Demiryolu) A guard rail (check rail) is a short piece of rail placed alongside the main (stock) rail opposite the frog. These exist to ensure that the wheels follow the appropriate flangeway through the frog and that the train does not derail
Turkish - Turkish
Definition of emniyet rayı in Turkish Turkish dictionary
(Demiryolu) Köprü üstleri, tünel içleri gibi raydan çıkan trenin çevreye çarpma tehlikesi bulunan yerlerde normal raya ek olarak kullanılan ray