Device and method of optically signalling road or traffic lanes, specifically in low visibility conditions
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United States of America Patent
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Apr 20, 2010
Issued Date -
N/A
app pub date -
Oct 5, 2005
filing date -
Oct 7, 2004
priority date (Note) -
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Abstract
An optical signaling apparatus for use in highways or roadways (2), particularly in low visibility conditions, wherein a roadway (2) comprises at least one traffic bearing surface (S) with at least one edgeline (3). The apparatus comprises light-emitting means (4) for emitting at least one laser beam (5) and support means (6) designed to be arranged along the roadway (2) for supporting the light-emitting means (4). The apparatus also includes optical means (7) arranged along the roadway (2) for interacting with the beam (5) in such a manner as to selectively conform and project it either in a first direction (D.sub.1) which is incident on at least one edgeline (3) to interact therewith, or in a second direction (D.sub.2) substantially parallel to the traffic bearing surface (S) to define a substantially continuous optical path that can be viewed by the users, or even in both such directions (D.sub.1, D.sub.2).
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