The first step for any city considering converting their high pressure sodium or mercury vapor street lighting system to LEDs is to evaluate the actual data and draw on the experiences of other communities. Fortunately hundreds of communities throughout the world have already installed some LED Street Light ing and there is considerable evidence now that at the very least LED street lights will provide the following benefits compared to HID:
Improved nighttime visibility and safety through better color rendering, more uniform
lighting distributions and the elimination of many dark areas between poles.
Reduced direct and reflected uplight which are the primary causes of urban sky glow.
40-80% energy savings (depending on incumbent lighting source and lighting design criteria).
50-75% street lighting maintenance savings.
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