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=== Other variations ===
[[File:Halfklaverbladaansluiting.png|thumb|upright|A parclo AB2 interchange or folded diamond]]
[[File:Parclo-AB3.svg|thumb|upright|A parclo AB3 interchange (hybrid).<br />Samples: The [[Laurensberg]] interchange in [[Aachen]], Germany {{coord|50.804072|n|6.075574|e}} and US 74/NC 51 interchange near Matthews, North Carolina {{coord|35.125862|n|80.705334|
Parclo designs with only two quadrants are commonly referred to as folded diamonds, due to their similarity with [[diamond interchange]]s. Sometimes the ramps in a folded diamond are actually local streets; surface roads upgraded to higher standards often do this to save money on land acquisition. This type of interchange long predates the parclo; the [[Merritt Parkway]] and [[Queen Elizabeth Way]], both built in the 1930s, used mainly folded diamonds and [[cloverleaf interchange|cloverleaves]]. Another example of this is [[Ontario Highway 401|Highway 401]]'s interchange with [[Highway 2 (Ontario)|Highway 2]] east of Tilbury (Exit 63): the ramps also have intersections fairly close to the freeway to allow traffic to continue on a rural country road (Jeannette's Creek Road / McKinlay Road) which formerly met Highway 2. One of the examples in Asia includes the [[Clark Freeport and Special Economic Zone|Clark]] South exit in [[Subic–Clark–Tarlac Expressway|SCTEX]], which is a two quadrant parclo interchange.
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