Cloverleaf interchanges, viewed from overhead or on maps, resemble the leaves of a four-leaf clover or less often a 3-leaf clover. In the United States, cloverleaf interchanges existed long before the Interstate system. … 展开

The primary drawback of the classic design of the cloverleaf is that vehicles merge onto the highway at the end of a loop immediately before other vehicles leave to go around another loop, creating conflict known as weaving. Weaving limits the number of lanes of … 展开

• 40°34′18″N 74°17′34″W / 40.571694°N 74.292796°W Map of the Woodbridge, NJ Cloverleaf
• 39°58′44″N 74°10′58″W / 39.978943°N 74.182783°W Map of the Toms River, NJ At Grade Cloverleaf 展开

Background
The first cloverleaf interchange patented in the US was by Arthur Hale, a civil engineer in Maryland, on February 29, 1916. 展开

• Partial cloverleaf interchange
• Stack interchange
• Continuous-flow intersection
• Diverging diamond interchange 展开