Question:
For new hwy overpass construction, why the nighttime spotlight pointed at a white board underneath?
the large white board with a spotlight shining on it at night is usually erected on the wooden scaffolding support facing traffic…..
is it for some kind of problem detection? or is it for safety, even though there is always barrier between the flow of traffic and the support column?
just wondering the specific reason….
Answer by Zzonyx
If the light source is powerful enough, this technique provides soft, reflected illuminantion over a larger area, without the glare risk, especially in high-traffic areas.
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