Three-level diamond interchange

Three-level diamond diagram. Arrows are for traffic driving on the right.

A three-level diamond interchange is a type of highway interchange where through traffic on both main roads is grade-separated from intersections which handle transferring traffic.[1] It is similar in design to a three-level stacked roundabout except for its use of (usually signalled) conventional intersections, and can be thought of as two diamond interchanges fused together.

Road enthusiasts sometimes use the terms volleyball interchange or split-level diamond interchange to refer to these interchanges.[2]

  1. ^ Indiana Department of Transportation, "Interchanges" (PDF). (203 KiB), pages 21 and 22
  2. ^ Oglesby, Scott. "Volleyball Interchange". Kurumi's Field Guide to Interchanges. Retrieved 23 August 2013.[self-published source]