Pollution of the Highways Runoff

This paper collates the final results of the project dealing with the quantity and quality of highways rainfall – runoff. Field investigation was carried out through the period 2005 – 2007 on several stretches of D1 highway Praha – Brno. Low contents of the EU priority dangerous substances in surface runoff, which depends on the character of sampling and level of traffic intensity, were found. An impact on the water ecosystem, mainly on the algae Scenedesmus quadricauda, was confirmed through ecotoxicity testing. The measurement of precipitation and outflow has also brought findings about the variability of runoff coefficient in this built up transport area.