Kyoto Juhkan Expressway (Kyoto) with porous asphalt (void ratio: 20%) was constructed using new concepts (Kyoto Specifications) in March 1989 in Japan. It has been kept maintenance free (no damage) for sixteen years in all sections (12.6 km). Fig. 1 shows the distribution of three dimensional cracks in Kyoto, together with conventional pavement. Fig. 2 shows the tensile strain for conventional new pavement with three layers at high temperature under moving load after one hour.