What is "carveboarding"

Carveboarding is a boardsport on hard surfaces (roads, sidewalks, etc.).
Carveboard is also the brand name of the board which popularized the practice of this sport.

The board was invented by Californian snowboarder & surfers (David Colley and Brad Gerlach) to practice their moves during flat sea days and summer. The result is a board that shares with the surfing, snowboarding, skateboard ride experience. And although by its anatomy (a board, 2 trucks, 4-wheel) the carveboard looks somewhat like its cousins skateboards, the handling and feel are ultimately much closer to those of surfing and snowboarding. Joe Gerlach, Brads father, started Carve Board Sports based on the design.

The practice reminds of, better known, longboarding. However, it emphasizes the work of the turn for which it provides all the variations of the carve. Some models are equipped with pneumatic (air filled) tires, so use on rougher surfaces (asphalt, pavement, hard earth, etc.) is also possible.