Angioedema-swelling of tissue beneath the surface of the skin-can be mistaken for or associated with hives. It can be caused by allergic reactions, medications or a hereditary deficiency of some enzymes. The following symptoms may indicate angioedema: 1  Swelling in the eyes or mouth. 2  Swelling of the hands, feet or throat. 3  Difficulty breathing, stomach cramps or chemosis (swelling of the lining of the eyes).
Turbo roundabout is a design developed by Bertus Fortuijn. Its design, when combined with appropriate signage, dramatically improves safety and traffic flow, and is surprisingly easy for the unfamiliar driver to navigate.
Drivers yield at entry to traffic already in the roundabout, then proceed into the intersection and exit at their desired street. A main feature of the modern roundabout is a raised central island. The circular shape is designed to control the direction of traffic and reduce speeds to 15 to 20 mph.