 This type of junction is common in Germany, where it is called a "partial at-grade intersection" ().A so-called two-quadrant interchange also exists, which adds a second quadrant road (although the term "two-quadrant interchange" could be applied to any grade-separated junction in which there are ramps in two quadrants).The single-loop variant is used frequently in the Thornhill area, in the Greater Toronto Area in Ontario, Canada, examples include