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Grade-separated road junctions are typically space-intensive, complicated, and costly, due to the need for large physical structures such as tunnels, ramps, and bridges. Their height can be obtrusive, and this, combined with the large traffic volumes that grade-separated roads attract, tend to make them unpopular to nearby landowners and residents.
In the field of road transport, an interchange (American English) or a grade-separated junction (British English) is a road junction that uses grade separations to allow for the movement of traffic between two or more roadways or highways, using a system of interconnecting roadways to permit traffic on at least one of the routes to pass through ...
A directional interchange is a grade separated junction between two roads where all turns that require crossing over or under the opposite road's lanes of travel to complete the turn utilize ramps that make a direct or semi-direct connection. The difference between direct and semi-direct connections is how much the motorist deviates from the ...
A typical diamond interchange. The freeway itself is grade-separated from the minor road, one crossing the other over a bridge.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 that returns to the freeway in similar fashion.
I-520 in Augusta, Georgia has an at-grade intersection with a gravel and asphalt road that provides access to Lovers Lane. I-40 in the mountains of western North Carolina has at-grade access to several dirt roads, as well as a partially grade-separated interchange that lacks ramps or RIROs where roads directly connect to the I-40 carriageways.
Controlled-access highways in Israel are designated by a blue color. Blue highways are completely grade-separated but may include bus stops and other elements that may slow down traffic on the right lane. Highway 6 is Israel's longest freeway. It will extend to 260 km (160 mi) in length, from Shlomi in the north to the Negev Junction in the south.
Work on the $24.7 million RM 620 Roundabout Project began in 2020 and was completed this week. It is intended to improve safety, enhance mobility in west Round Rock.
A grade-separated junction is a transport junction where at least one bridge or tunnel is used to separate traffic flows (known as grade separation). Relevant articles include: Road interchanges, known as grade-separated junctions in the UK; A flying junction, a type of grade-separated junction found on railway lines