| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that it is necessary to provide an engagement part projecting from the ground at the time of construction of a bumping post, that the question of how to fix an engagement part (a pile, a bolt or the like) exists in the case of the soft ground, and that a projected part from the ground prevents the formation of a flat surface when the need for the bumping post is eliminated. SOLUTION: The groove width W<SB>2</SB>of a side groove 9 which is partitioned by a side groove partitioning line 19 is set so that it overlaps the length range L of the contact range of a front wheel 20a at the time of parking in a stop position at the time of the parking of an automobile 18 (a position of a steering wheel is in a neutral position) in an area of a parking partitioning line 15. The side groove partitioning line 19 is set in parallel with the direction of the lateral line 16 of the parking partitioning line 15. The stop position of the automobile 18 is set by taking into consideration an overhang part OV<SB>1</SB>and a margin M at the time of forward-facing parking. When the overhang part OV<SB>2</SB>is longer than the overhang part OV<SB>1</SB>, this case is also taken into consideration. The setting position of the side groove partitioning line 19 is selected to be appropriate within an overlapped range in accordance with the position or the shape of the bumping post 26 of the side groove lid 2 with the bumping post. COPYRIGHT: (C)2008,JPO&INPIT
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