Manufacturers originally designed double-ended high-pressure sodium light bulbs so they would be compatible with double-ended metal halide fixtures. Traditional single-ended high-pressure sodium bulbs ...

Think back to mixing primary-color paint in grade school. Remember how mixing in yellow changes white, blue and red? Lighting is no exception. A problem too often overlooked is how the yellow-tinted ...

Most talk glowingly about their neighborhoods’ new nighttime look. But some residents are taking a dim view of bright new streetlights that are popping up across Los Angeles. Energy-saving ...

A contractor working for Clark Public Utilities is replacing 23,000 streetlights from old high-pressure sodium bulbs to new LED-style ones. The new lights last significantly longer and use a fraction ...

Spurred by a desire to lower energy costs, cities and towns in the area — and throughout the country — are overhauling their street lights. One after another, high-pressure sodium lights, a longtime ...

Energy-efficient LED streetlights JEA is installing in Jacksonville are more expensive than the current high-pressure sodium ones used now but are brighter, designed to last longer and promise an ...

Up until a few years ago, the City of Eau Claire had used the same kind of lights, known as high powered sodium lights, on the streets for decades. The city then switched to LED bulbs around five ...

as the city moves forward with the lighting makeover, experts are urging officials to consider public health and environmental questions. LED lighting in the background vs high-pressure sodium ...

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