Diamond interchange - Citizendia

A typical diamond interchange

A diamond interchange is a common type of road junction. A road junction is a location where vehicular Traffic going in different directions can proceed in a controlled manner designed to minimize accidents

Diamond interchanges are used where a freeway crosses a minor road. The freeway itself will be grade-separated from the minor road, a bridge being provided for one or the other. Grade separation is the process of aligning a junction of two or more transport axes at different heights ( A bridge is a Structure built to span a Gorge, Valley, Road, railroad track, River, Body of water Approaching the interchange from either direction, an off-ramp diverges only slightly from the freeway and runs directly across the minor road, becoming an on-ramp which returns to the freeway in similar fashion. In the field of Road transport, an interchange is a road junction that typically

The two places where the ramps meet the minor road are treated as conventional intersections. RAMP was an American soul / Jazz band from Cincinnati Ohio. RAMP has mistakenly been said to stand for " Roy Ayers In the field of Road transport, an intersection is a road junction where two or more Roads either meet or cross at grade (they are In the United States, where this form of interchange is very common, particularly in rural areas, traffic on the off-ramp typically faces a stop sign at the minor road, while traffic turning onto the freeway is unrestricted. The United States of America —commonly referred to as the Rural areas can be large and isolated (also referred to as "the country" and/or "the countryside over the course of time Traffic on Roads may consist of Pedestrians ridden or herded Animals Vehicles Streetcars and other Conveyances either singly A stop sign is a Traffic sign, usually erected at Road junctions that instructs drivers to stop and then to proceed only if the way ahead is clear

The diamond interchange makes more efficient use of space than most types of freeway interchange, and avoids the interweaving traffic flows that occur in interchanges such as the cloverleaf. In the field of Road transport, an interchange is a road junction that typically Overview Cloverleaf interchanges viewed from overhead or on maps resemble the leaves of a Four-leaf clover. Thus, it is most effective in areas where traffic is light and a more expensive interchange type is not needed. But where there is significant traffic, the two intersections within the interchange may cause congestion and accidents, requiring additional features such as traffic lights and extra lanes dedicated to turning traffic, or (as in the United Kingdom) a pair of roundabouts to create a type of junction called a dumbbell interchange. The traffic light, also known as traffic signal, stop light, traffic lamp, stop-and-go lights, robot or semaphore, The word lane has several meanings including and especially a portion of a paved Road which is intended for a single line of vehicles and is marked by White The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located A roundabout is a type of Road junction at which Traffic enters a one-way stream around a central island For this reason, many busier junctions that were originally serviced by diamond interchanges have since been upgraded to parclo or SPUI interchanges. The parclo interchange (a Portmanteau of partial cloverleaf interchange) is a modification of a Cloverleaf interchange. A single-point urban interchange ( SPUI, ˈspuːi or /ˈspjuːi/ also called a single-point interchange ( SPI) or single-point diamond interchange

Where HOV lanes are present for carpooling, the ramps of a diamond interchange may be "folded" to the inside lanes instead of the outside. In Transportation engineering and Transportation planning, a high-occupancy vehicle lane (or HOV lane) is a lane reserved for Vehicles with Carpooling (also known as car-sharing, ride-sharing, lift-sharing) is the shared use of a car by the driver and one or more passengers usually In urban areas this saves some space as well as requiring only one intersection instead of the two one-way intersections, which in rural or suburban areas can be turned into a single point urban interchange. Rural areas can be large and isolated (also referred to as "the country" and/or "the countryside over the course of time South San Jose (cropjpg||thumb|A suburban development in San Jose California. A single-point urban interchange ( SPUI, ˈspuːi or /ˈspjuːi/ also called a single-point interchange ( SPI) or single-point diamond interchange This in turn reduces waiting time for motorists at traffic lights on the smaller road, which may be a large local thoroughfare with heavy traffic. The traffic light, also known as traffic signal, stop light, traffic lamp, stop-and-go lights, robot or semaphore, A street is a Public thoroughfare in the built environment It is a Public parcel of land adjoining Buildings in an urban context

See also