| 摘要 |
PROBLEM TO BE SOLVED: To provide a boundary block for a road, onto which a vehicle can be restrained from running, which can cushion a shock to the vehicle, a driver and the like, and which can suppress a change in the direction of a tire, caused by friction. SOLUTION: A first block 5 is arranged along a roadway; a first inclined plane 12, which is curved in an approximate arc shape, is formed in the lower area of a side surface 11 on the side of the roadway; and a second planar inclined surface 13 is formed in the upper areas of the side surface 11. Thus, the tires of the vehicle slide on the inclined surface 13, and slide along the roadway without rolling upward. Particularly, the change of the direction of the tire is regulated by the inclined surface 12, and the tires surely slide without biting into an upper-end corner part 14 of the first block 5. COPYRIGHT: (C)2004,JPO
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