A carriage assembly (1) is described, comprising at least two wheels (3), an actuating system (2) and at least one transmission system (17), such actuating system (2) operatively cooperating with such transmission system (17) both for passing such wheels (3) from an operating circulation position to an operating working position and vice versa, and for changing an operating working configuration of such carriage assembly (1). A reversible plowing system (100) comprising at least one of such carriages (100) is further described.
