A general term that means dancers who are circulating will change tracks (i.e., from inside to outside and from outside to inside). The traffic pattern is to have those designated do an ordinary Circulate and then half sashay with adjacent dancer to change tracks.
NOTE: See Cross Over Circulate and Trade Circulate on the list of Challenge Dancing's Basic Calls.
Jay King 1968
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.