Before revision: Grade , slope, incline, gradient, pitch or riseThe degree by which a road rises or declines, affected by fills and cuts designed and built to reduce the steepness of a road.Grade separation The method of aligning a junction of two or more road axes at different heights (grades) so that they will not disrupt the traffic flow on other transit routes when they cross each other.
After revision: Grade separation The method of aligning a junction of two or more road axes at different heights (grades) so that they will not disrupt the traffic flow on other transit routes when they cross each other.