pikkikiertoliittymä

A pikkikiertoliittymä, often translated as a mini-roundabout or small roundabout, is a traffic calming measure designed for intersections with lower traffic volumes and speeds. Unlike larger roundabouts, pikkikiertoliittymät are typically characterized by a smaller central island and narrower entry and exit approaches. These features are intended to naturally reduce vehicle speeds as drivers navigate the intersection.

The primary purpose of a pikkikiertoliittymä is to improve safety by reducing the severity of potential collisions. By forcing vehicles to slow down and creating a central obstruction, they help to minimize the incidence of high-speed right-angle crashes, which are common at traditional intersections. They can also help to improve traffic flow in situations where a full-sized roundabout might be impractical due to space constraints.

Pikkikiertoliittymät are often implemented in residential areas, on minor roads, or in locations where pedestrian and cyclist activity is also a consideration. The design aims to be intuitive for drivers, with clear yield markings at the entry points. While they serve a similar function to larger roundabouts, their smaller scale means they are best suited for specific types of intersections where the benefits of speed reduction and simplified turning movements are most pronounced. Their implementation is a part of broader traffic engineering strategies focused on enhancing road safety and managing traffic flow effectively.