The thesis deals with the present condition of junctions and appertaining areas of freeways
and motorways, especially of Ljubljana AC and HC ring, which is one of the busiest and most
demanding parts of Slovenian road system. The theoretical part of the thesis discusses the
teory of trafic flow, which is a basis for the understanding of subsequent subjects. The areas
of ramps, weaving and basic technical regulations are dealt with in detail. The second part
deals with a specific case of altered traffic arrangement with some effective improvements,
proven by a detailed analysis of trafic data obtained from automatic gauges and by manual
counting, as well as the comparison between the diagrams of traffic flow before and after the
alteration of the road section in question. Furthermore, the section between the junctions Lj.
Šentjakob and Lj. Sneberje, which is still to be altered in this way, is presented. Manual
counting has been carried out here as well and the data have been used in programme
analysis. It has been proven that a similar measure should be taken in this section, too. The
last part presents a few other problematic section of Ljubljana ring road and elsewhere in
Slovenia, suggesting measures to solve them.