(1) The infiltration performance is highly affected by the age of the pavement because of the entrainment of mineral and organic fines in the upper 20 mm of joint fillings or the pores of porous paving blocks. An overall trend of the infiltration performance during the service life of a permeable pavement allows constructing the hypothesis of a decrease to 10 to 25 % of its original output power (Fig. 8). (2) Permeable pavements are able in new and partly in aged condition to infiltrate storms that normally are beyond the rainfall measures for the hydraulic design of road drainage systems. The verification for the whole service life is at the moment not finally clarified. (3) This leads to the recommendation for a runoff coefficient of 0.3 to 0.5 for permeable CBP during the whole service life compared with non-permeable CBP with 0.8 (Borgwardt 1994). (4) A significant correlation between infiltration performance and permeability of the aggregates of joint fillings is given. Aggregates with a coarse particle size exhibit a higher infiltration than others with fine grained aggregates. (5) There is only a limited correlation between the infiltration performance and the openings ratio. A mathematical calculation of the actual infiltration performance because of permeability-coefficient and opening ratio is not acceptable. For that reason the openings ratio of permeable CBP is not as important as the selection of highly permeable aggregates for the joint filling. (6) The overall variance of all results leads to the conclusion that the infiltration performance of permeable CBP depends in the first place on the quality of the aggregates for the joint filling and mainly on the quality of the construction execution.