| 摘要 |
A vehicle safety parapet comprises a plurality of rails ( 18, 24, 28 ) supported at varying heights on uprights ( 12 ). A first of the rails comprises a steel box-section supported at each upright by bracketing means ( 20 ) configured to collapse when a horizontal impact load is applied to the rail, such that the first rail is displaced towards the upright. At least one other rail extends from the uprights by a greater distance than the first rail when the bracketing means has collapsed. |
