The dilemma: to paint or not to paint on the circuit? Traffic safety experiences of the concentric two-lane roundabout on Szombathely main roads 86-87

Abstract

In Hungary, the first new types of suburban roundabouts - initially single-lane - were built in the early 1990s, but by the turn of the millennium, some concentric two-lane roundabouts had already appeared in Hungary. Due to unfavourable national and international experiences, most of the concentric roundabouts were later converted into spiral or turbo roundabouts, but there are still some that have not been converted due to lack of resources. The north-eastern gate of Szombathely is a seven-lane roundabout with a two-lane geometry. The (parallel) traffic on the roundabout is still a controversial issue among road users. In this article, we describe the changes in the traffic load of the junction, examine the conflicts at the junction and suggest a possible modification of the roundabout.