| 摘要 |
<p>The base unit 100, for use with depressible road studs, has a substantially rectangular shape comprising front 106 and back 107 portions and opposing side walls101,102, with a cavity 110 for retaining a resilient insert located between the front portion, the back portion and the side walls, wherein the external surface of each side portion incorporates one or more recesses 131A,131B,131C,132A,132B,132C. Each recess preferably extends to the bottom of the base unit, and comprises a groove with a rounded profile or horizontal cross-section that runs vertically, in use, down the external surface of the side wall and which is arched at the top. There are preferably three recesses in each side wall that each extend vertically for at least half the height of the corresponding wall. Each recess preferably extends at least halfway into the thickness of the corresponding side wall and with the recesses being positioned so that after installation they do not extend above the road surface. The cavity is preferably positioned between the recesses with projections 121,122 projecting into the cavity from the side walls for retaining the resilient insert being positioned so that they are interspersed with the recesses.</p> |
