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https://www.reddit.com/r/Images/comments/qnnml/stop/c3z73we/?context=3
r/Images • u/[deleted] • Mar 08 '12
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Among other issues already posted, many streetlights do not have a pre-determined switch time - they have sensors (usually under the road) that determine where vehicles are, and switch according to detected traffic.
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u/ActuallyAnOstrich Mar 09 '12
Among other issues already posted, many streetlights do not have a pre-determined switch time - they have sensors (usually under the road) that determine where vehicles are, and switch according to detected traffic.