33C1 Guard/Restraining Rail
33C1 is the designation for the popular UIC33 section (also known as RL-160 or U69) that is used as a guard rail at frogs, as a restraining rail through curves, and as a point guard.
33C1 is the designation for the popular UIC33 section (also known as RL-160 or U69) that is used as a guard rail at frogs, as a restraining rail through curves, and as a point guard.