| 摘要 |
PROBLEM TO BE SOLVED: To provide a block for barrier-free of a sidewalk curbstone formed in a shape capable of safely riding in without overturning, when a bicycle rides in a sidewalk from the roadway side, in the block of the sidewalk curbstone laid in a boundary part between a sidewalk and a roadway. SOLUTION: In the block 1 for the barrier-free of the sidewalk curbstone, a shape of a corner part 5 of the sidewalk curbstone 4 of the boundary part between the sidewalk 2 and the roadway 3, is formed in a stairs shape composed of two stages. In the block 1 for the barrier-free of the sidewalk curbstone 4, this stairs shape is formed by retreating the corner part 5 of a second stage from the roadway side to the corner part 5 of a first stage so that the respective corner parts 5 of the first stage and the second stage of the sidewalk curbstone 4 simultaneously contact with a tire 12 of a wheel 11 when allowing the wheel 11 to abut at a right angle to the edge of the sidewalk curbstone 4, when the tire 12 of the wheel 11 such as the bicycle rides in the sidewalk curbstone 4 from the roadway 3 side. COPYRIGHT: (C)2008,JPO&INPIT
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