Definitions for grade separation
This page provides all possible meanings and translations of the word grade separation
a crossing that uses an underpass or overpass
Grade separation is the method of aligning a junction of two or more surface transport axes at different heights 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 or as an interchange – in contrast with an intersection or an at-grade, which are not grade-separated.
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"grade separation." Definitions.net. STANDS4 LLC, 2015. Web. 25 Apr. 2015. <http://www.definitions.net/definition/grade separation>.