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A roundabout interchange is a type of interchange between a controlled access highway, such as a motorway or freeway, and a minor road. The slip roads to and from the motorway carriageways converge at a single roundabout , which is grade-separated from the motorway lanes with bridges.
The roundabout at the Brown Road and Loop 202 interchange in Mesa, Arizona, adopts a U.S.-recommended design. [73] On-street pavement markings direct cyclists to enter the sidewalk at the end of the bike lane. Cyclists who choose to travel on the wide sidewalk, cross roundabout arms perpendicularly, well outside the circle.
A braided or diverging interchange is a two-level, four-way interchange. An interchange is braided when at least one of the roadways reverses sides. It seeks to make left and right turns equally easy. [37] In a pure braided interchange, each roadway has one right exit, one left exit, one right on-ramp, and one left on-ramp, and both roadways ...
Diamond interchange; Partial cloverleaf interchange; Single-point urban interchange; Roundabout interchange; Compact grade-separation, whereby the two roads are linked by a compact "connector road", with major-minor priority junctions at each of its ends; usually a variant of the cloverleaf type interchange, but only involving two quadrants ...
A dumbbell interchange along Ontario Highway 401 in Clarington, Ontario, Canada.This one features a loop ramp. The ramp intersections may also be configured as a pair of roundabouts [1] to create a type of diamond interchange often called a dumbbell interchange [citation needed] (due to its aerial resemblance to a dumbbell), and sometimes called a double roundabout interchange.
The project, paid for through federal funds, will bring two roundabouts for the interchange of U.S. 52 and Marion Pike/State Route 243, an area that has become known for traffic backups in peak ...
A diverging diamond interchange (DDI), also called a double crossover diamond interchange (DCD), [1] [2] is a subset of diamond interchange in which the opposing directions of travel on the non-freeway road cross each other on either side of the interchange so that traffic crossing the freeway on the overpass or underpass is operating on the ...
We have different kinds of “rotary traffic islands,” including neighborhood traffic calming circles, mini roundabouts, single-lane roundabouts, and multi-lane roundabouts.