The diploma thesis deals with the behaviour of traffic stream at work zones. It focuses primarily on alternating arranging just before funnelling of the traffic and creation of congestions. The study of parameters defined in the Aimsun program, that examines their effect on alternating arranging in micro-simulation, is a part of the thesis. The right setting of values is verified on traffic model formulated on the basis of video recording. The work aims to minimize effects of necessary repairs and reconstructions of roads by the telematic applications which dynamically affect the traffic stream by changing the maximum speed.