| 摘要 |
PROBLEM TO BE SOLVED: To provide a lid slab for side ditch capable of improving the water collecting and draining capacities during rainfall, the scenery or reducing rattling noise when motor vehicles travel. SOLUTION: Top surface shape of the lid slab of the side ditch is formed to a dish shape, an almost V-shape, a single slope shape, an L-shape or a flat shape, one to several inverted funnel-shaped slits are provided longitudinally or laterally in the central portion of the lid slab or a shallow water collecting ditch communicating with the slit is arranged and a projected portion for regulating the position in length direction or width direction are formed on the side surface of the lid side.
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