Grade separation
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Grade separation
Grade separation is the method of aligning a junction of two or more transport axes at different heights (grades) so that they will not disrupt the traffic flow on other transit routes when they cross each other. The composition of such transport axes does not have to be uniform; it can consist of a mixture of roads, footpaths, railways, canals, or airport runways. Bridges, tunnels, or a combination of both can be built at a junction to achieve the needed grade separation.
In North America, a grade-separated junction may be referred to as a grade separation[1][2] or as an interchange – in contrast with an intersection or an at-grade, which are not grade-separate
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In North America, a grade-separated junction may be referred to as a grade separation[1][2] or as an interchange – in contrast with an intersection or an at-grade, which are not grade-separate
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