Apparatus for use in an area of vehicular traffic is disclosed. For achieving that, a carrier for microorganism incubation of a diffusion type in which microelements and inorganic nutrient salts which are useful in proliferation of microorganism are included in a porous material is provided. The one or more crack tip zones can be constrained within a finite element model representation mesh of the arbitrarily shaped solid to provide one or more constrained crack tip zones. The fastening element has clip-like protrusions extending between the individual lattice bars and the clip-like protrusions have grooves and edges of the housing engage in the grooves. Said repulsion effects a forward movement of the capsular sack and the lens located therein when the ciliary muscle contracts.