PROBLEM TO BE SOLVED: To provide a roller board in which exercise and bodily experience of a snowboard skill are searched at familiar concrete slopes, non-directional free sliding is made possible in the board flat, and directionality and a turn radius can be steered by weight transfer in a rail slope.;SOLUTION: A roller board includes casters 2 in the vicinity of a center of a board sliding surface and a rail guiding wheel in the vicinity of a rail, and the height of each wheel is different. In the board flat, it is provided in the height where only the casters are grounded. The rail guiding wheel is provided in the height grounded according to the rail slope. In the board flat, non-directional free sliding is made possible. Directionality and a turn radius can be steered by weight transfer according to a rail slope. Exercise and bodily experience of snowboard operation such as side sliding, valley lowering, drift rotation and rail turn of a snowboard characteristic skill are made possible at concrete slopes.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT
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