In order to accomodate the increased traffic volume, the need to upgrade existing traffic infrastructure had arisen. Solutions such as roadway expansions, additional traffic light installations, roundabouts, overpasses or bypasses are not always available. Nowadays, more complex alternatives and integrated intelligent traffic systems are used in order to quickly, efficiently and safely manage traffic. Road section Lavrica – Škofljica is subjected to daily congestions at peak hours. Due to a very constrained land configuration – railway on one side of the road section and a hilly landscape on the other side, it is not possible to substantially widen the existing roadway and add additional lanes. Therefore, the only option is to adapt the existing infrastructure in order to achieve a better traffic flow during peak hours. This paper presents an alternative traffic configuration by introducing reversible lanes. Slovenia has yet to implement this kind of practice, however it seems to be a sensible solution when the existing traffic infrastructure is overloaded, when congestions are recurring and predictable and there are spatial constraints. Road section Lavrica-Škofljica is currently a two lane roadway with a hard shoulder. The project in this paper proposes transforming the roadway into a three lane one with a reversible center lane. This means that in the morning the center lane would provide an additional lane in the direction to Ljubljana and, consequently, an additional lane in the direction to Škofljica in the afternoon. It is of paramount importance, that the drivers receive unambiguous information which lanes they can use. This road section poses another challenge for all the vehicles turning to the left, as additional intersections, turning areas and additional roads would need to be introduced.
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