27 individual concrete slabs each with a surface area of 43 x 21 mm to construct a concrete roadway with a length of more than 80 cm For the designing 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 plan work out the lanes with some colour & add some grass material & dandelions to finish an old concrete road