lane-splitting
n.β Β«When we moved here to California, I was surprised to see that this state apparently allows motorcycle drivers to engage in a practice called “lane-splitting.” This is the practice where a motorcycle can jam itself in a lane space already occupied by a truck or automobile.Β» ββOnly in California: Motorcycle βlane-splittingβ” Contra Costa Times (Walnut Creek, California) Dec. 10, 2006. (source: Double-Tongued Dictionary)