2+1 ROADS AS A MEASURE FOR TRAFFIC IMPROVEMENT: SWEDISH EXPERIENCE AND POSSIBILITIES FOR IMPLEMENTATION IN SERBIA

Abstract

This paper analyzes the concept of 2+1 roads as a contemporary road design solution that provides a compromise between conventional two-lane roads and motorways. Particular attention is given to the safety and functional characteristics of these roads, as well as to their economic feasibility. Increasing traffic volumes on two-lane roads may lead to a higher risk of head-on collisions, indicating the need to improve their safety. The 2+1 road concept is based on the alternating provision of an additional overtaking lane and the physical separation of opposing traffic flows. Experience from Sweden, Germany, and other countries indicates that 2+1 roads are a cost-effective alternative that provides a high level of safety, comparable to motorways, while requiring significantly lower construction costs. The implementation of this concept could significantly improve traffic safety and traffic flow efficiency in Serbia, particularly on road sections with moderate to high traffic volumes.