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The LED street lights recommended by the manufacturer representatives would cost more than twice as much to own and operate as the incumbent technology over the life of the streetlights, primarily because the LED street lights required narrower pole spacings to meet the recommended practice for illuminating collector roads, and the cost of the poles per mile dominated the life cycle costs.
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The off‐the‐shelf outdoor SPLEDs had a high color temperature (cold white light) like in the early LED technology, with an emission peak in the blue portion of the spectrum, that is, known for its attraction of insects (e.g. Van Langevelde et?al., 2011 ; van Grunsven et?al., 2014 ). This peak can be reduced (though not eliminated) in modern warmer colored LEDs (Davies et? al., 2017 ). Furthermore, the design of the LED luminaire and its diffusor should avoid light scatter. best led headlights http://bestledheadlight.com/