Odvodnja prometnica kroz povijest se pokazala ključnom za njihov dug vijek kao i za ulaganja tokom eksploatacije. Ovim radom obuhvaćen je povijesni pregled sustava odvodnje, definirana su raskrižja u razini, predstavljeni sustavi odvodnje koji se trenutno koriste kao i novi sustavi koji su još uvijek u razvoju. Porozni betonski kolnik nameće se kao budućnost cestogradnje. Brza i efikasna površinska odvodnja, te zadržavanje sitnih čestica i kemikalija u konstrukciji kao i smanjenje prometne buke daju mu odlike kolnika budućnosti i sa ekološkog aspekta. Cilj eksperimentalnog istraživanja je utvrditi kako različiti omjeri frakcija agregata utječu na svojstva poroznog betona u očvrslom stanju, te dati prijedlog primjene u odvodnji raskrižja u razini.

The road drainage throughout history has proven to be crucial for their longevity as well as for investment during exploitation. This paper encompasses a historical overview of the drainage system, defines level intersections, presens drainage systems currently being used as well as new systems that are still in development. Pervious concrete pavement imposes itself as the future of road construction. Rapid and efficient surface drainage and the retention of fine particles and chemicals in the construction as well as the reduction of traffic noise give it the characteristics of the roadway of the future also from the ecological aspect. The aim of the experimental study is to determine how the various ratios of the aggregate fraction affect the properties of pervious concrete in the hardened state and to give an application proposal in level intersections.