There was investigation of elemental composition through XRF analysis. Seventeen samples were collected from around Vír and Brno dam. Samples were taken from sites with emphasis on the difference in traffic density. After analyzing the samples three of the eleven risk elements were found, including arsenic (As), lead (Pb) and zinc (Zn). Contamination level was compared with limits given by Czech Ministry of the Environment. Two samples showed increased limits in contamination, arsenic (As) and zinc (Zn). However, after statistical investigation there was not discovered a link between traffic volume and increased concentration of risk elements in the soil.