27 individual concrete slabs each with a surface area of 30 x 15 mm to construct a concrete roadway with a length of more than 58 cm For the creation of curves junctions railroad overpasses etc more than 40 smaller partial trapezoidal elements are included The material is easy to handle Glue concrete slabs on the diorama work out the lanes with some colour & add some grass material & dandelions to finish an old concrete road