Distribution of the Roundabout Traffic

Abstract

The first roundabouts as traffic engineering facilities were not built until the beginning of the 20th century, although there were islands in the middle of the streets and marketplaces long before that time. Even in Roman times, people admired the water fountains and statues in marketplaces. A long time ago in England there were also traffic islands as pedestrian oases and in France there were also the imposing buildings in the middle of market squares. However, it was only the "planning border" of all these objects that turned them into traffic roundabouts.