Ballastless guard rail sleeper is a fitting, because the material used in the past mostly of wood, it is also known as sleepers. The material used is now more than just a timber, called a sleeper more scientific. Although the sleeper look monotonous, but its role can not be underestimated, especially non-ballasted track protective cover. Necessary to support the rail sleepers, but also to maintain the rail position, but also the enormous pressure of the rail pass is passed to the track bed again, this is a project. It must have some flexibility and good flexibility, if the case is not too hard and not too soft can, it is appropriate to moderate. If the train passed, it can be appropriate to deform in order to cushion the pressure, but after the train also possible restitution. The main part of the track structure generally transverse rail track laying in bed, under pressure from the rail, so that the spread in the track bed, while the use of fasteners effectively maintain gauge and track position. Sleeper effect is so great, that a greater role sleeper guard, because it is used to protect sleepers.