Diamond interchange

Diamond interchange between Interstate 285 and Georgia State Route 6 in Atlanta. This example has since been converted into a diverging diamond interchange.
Visual showing how diamond interchanges are used, with an expressway running across and a local road running in the center. Left image is for left-side traffic (UK), right image is for right-side traffic (US). Large arrows show where turns are made; smaller arrows show traffic flow.

A diamond interchange is a common type of road junction, used where a controlled-access highway crosses a minor road.