| 摘要 |
<p>A bollard suitable for use in road traffic control applications, for example to control or restrict the access of road vehicles into controlled zones, comprising a head portion 2, an anchor portion 1 adapted to be embedded in the ground, and fixing means 15 for fixing the head portion to the anchor portion in an upright position and in such a way that the head portion collapses in a predetermined manner when subjected to an impact above a predetermined magnitude. As disclosed, the head portion is pivotable between the upright position and a horizontal position on release of locking means. The bollard is preferably sufficiently rigid to withstand minor accidental impacts from both light and heavy vehicles without serious damage, and predetermined collapse is ensured by fracture of the fixing means thereby tending to avoid serious damage to the head or anchor portions as a result of a severe impact. <IMAGE></p> |
