Berlin Circle (traffic circle)

A Berlin Circle, in the context of traffic engineering and urban planning, refers to a specific type of large roundabout or traffic circle common in Berlin, Germany, and other parts of Europe. These circles are characterized by a large central island with multiple lanes of circulating traffic. Vehicles entering the circle typically yield to traffic already circulating.

Key features of a Berlin Circle often include:

• Large Diameter: Significantly larger than typical roundabouts, accommodating higher traffic volumes.
• Multiple Lanes: Multiple lanes within the circulating roadway allow for lane changing and maneuverability within the circle.
• Yield-on-Entry: Entering vehicles yield to traffic already circulating in the roundabout.
• Signage and Markings: Clear signage and road markings are crucial for guiding drivers and indicating lane usage.
• Pedestrian and Bicycle Accommodation: Integrated pedestrian crossings and bicycle lanes are often incorporated into the design, sometimes involving underpasses or overpasses to separate vulnerable road users from vehicular traffic.
• Central Island Features: The central island may contain landscaping, public art, or other features.

Berlin Circles aim to improve traffic flow, reduce congestion, and enhance safety compared to traditional intersections with traffic lights, particularly in high-traffic areas. The design prioritizes continuous traffic movement, reducing the number of stops and starts.

While the term "Berlin Circle" isn't a universally recognized traffic engineering term outside of specific regions, it accurately describes a recognizable type of large, multi-lane roundabout prevalent in Berlin and other similar urban environments. Variations exist, and the specific design features can vary depending on the location and the traffic conditions.