| 摘要 |
The structure for preventing vehicles from running off the road, comprises a wheel guard-rail wall portion (10) standing upright on the road (1) at a height (L); a fastening portion (20) having longitudinally perforated bolt holes (20a) and extended from the wall (10); fixing means (30) for fixing the guardrail wall (10) to the boundary portion (2) of the road (1) by bolts in the holes (20a) of the fixing portion (20).
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