| 摘要 |
<p>A road marker comprising a body (10) having an upper surface (15) to be mounted in the plane of a road surface, wherein the body has a circularly cylindrical outer configuration (11) and has a through going opening transverse to the plane of said upper surface with a reflector (13) arranged along the entire circumference of the opening, said reflector having a reflection surface corresponding to the inner surface of a truncated, inverted cone or truncated, inverted pyramid having retro-reflection characteristics independent of the angle of incidence of light from a vehicle headlamp. <IMAGE></p> |
