A roundabout is a type of circular intersection or junction in which road traffic is slowed and flows almost continuously in one direction around a central island to several exits onto the various intersecting roads. In a modern roundabout, entering traffic must always yield to traffic already in the circle, and roundabouts have additional restrictions on the junction layout to give high safety. Elimination of the opportunity for the most deadly crashes at intersections (T-bone or perpendicular crashes), is the greatest asset of the intersection design. Pedestrians are routed away from the intersection into which automobiles enter to separate crosswalks located at least one full car length outside of the intersection, where they have a refuge between lanes of traffic. This enables pedestrians to only have to cope with traffic coming from one direction at a time, which is travelling slowly enough for visual engagement with drivers and encourages deference toward the pedestrians. Roundabouts, in their modern form, were standardised in the U.K., improving on the experience of traffic circles built in the U.S. following WWII, Modern roundabouts are now common in many countries around the world.

The word roundabout dates from the early twentieth century, In the U.S., the term traffic circle is used where entering traffic is either controlled by stop signs, traffic signals, or is not formally controlled at all and speed of vehicles may remain unchanged. The term, roundabout, is reserved for circular flow intersections where entering traffic must yield to traffic already in device, with the intention to calm the traffic and enable the highest flow possible through the intersection along with the highest safety for pedestrians and cyclists. Not all modern roundabouts are strictly circular, some being elongated to include several former intersections, but the traffic always follows a circular flow.

Read more about Roundabout:  History, Modern Roundabout, Safety, Capacity and Delays, Advantages of Roundabouts, Public Opinion, Special Types of Circular Intersections

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List Of Road Junctions In The United Kingdom: P - P
1.46028°W / 53.38306 -1.46028 Park Street Roundabout Roundabout Park Street, St Albans M10 J1 A414 (formerly A405) North Orbital Road A405 North Orbital Road A5183 (formerly A5) 51°43′58″N 0°20′41″W ... road to Feniton SY096977 Paynes Hall Roundabout aka Westmill Roundabout Roundabout Tonwell, Hertfordshire A602 Ware Road B158 Wadesmill Road Anchor Lane (formerly B158 ... SW614324 Penn Inn Roundabout Signal-controlled roundabout Newton Abbot, Devon A380 Besigheim Way/Torquay Road A381 Torquay Road Shaldon Road (unclass) 50°31′2 ...
List Of Road Junctions In The United Kingdom: Q - Q
... SX456671 Queen Eleanor Interchange Roundabout Interchange Northampton A45 Nene Valley Way A45 Mere Way A508 London Road B526 Newport Pagnell Road Hardingstone Lane SP756580 The name is a reference to the ...
Centennial Circle - History
... streetscape project, which included the proposed roundabout to replace the inefficient five-way intersection ... by the city to prepare final design plans of the roundabout ... no banks at Bank Square and that it seemed contradictory to refer to a roundabout intersection as a square ...
Schuman Roundabout
... Schuman Roundabout (Dutch Schumanplein, French Rond-point Schuman), or Schuman Square, is a roundabout at the end of Rue de la Loi in Brussels that serves as a focus for major institutions of the European ... The roundabout is just to the east of the metro segment of Schuman station, which connects to heavy rail ... are already a web of rail and road tunnels running under and around the roundabout ...
Chiverton Cross - Roundabout
... Westward from the roundabout, the A30 is a dual carriageway road to the east is a 7-mile single carriageway section ... westbound between Chiverton Cross and Avers Roundabout, north of Redruth and eastbound and westbound between Chiverton Cross and Chybucca, the junction for Perranporth and Truro ... There are motorists' services by the roundabout including the Chiverton Arms pub (illustrated right), a Starbucks coffee shop (formerly a Little Chef restaurant) and two filling stations ...

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    Life is a long Dardenelles, My Dear Madam, the shores whereof are bright with flowers, which we want to pluck, but the bank is too high; & so we float on & on, hoping to come to a landing-place at last—but swoop! we launch into the great sea! Yet the geographers say, even then we must not despair, because across the great sea, however desolate & vacant it may look, lie all Persia & the delicious lands roundabout Damascus.
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