HomeMy Public PortalAbout1e - LED Roadway Lighting Benefits fLEDRoadway Lighting
Benefits
Light-emitting diode (LED) lighting is an exciting new technology that provides many
features and benefits to owners and users of roadway lighting systems.
• Increased energy efficiency and reduced carbon footprint
• Durable – heavy-duty light fixtures with no filaments or electrodes; shock and vibration resistant
• Long Life – 50,000+ hours (compared to high-pressure sodium (HPS) at 30,000 hours and
metal halide at 15,000 hours)
• Performance – no warm-up or restrike time, instant on/off, cold- and heat-tolerant
• Color Rendering – white light with color rendering index (CRI) of 70+ (versus orange color HPS with
low CRI) enhances visibility and color recognition
• Directional – delivers light to the roadway and sidewalk area with little or no wasted or stray light
(light trespass)
• Improved uniformity and lighting quality
– Uniform distribution of light across target area (roadway)
– Higher levels of vertical illuminance than conventional light sources
– Low optical losses of lumens from the light fixture
– High luminance efficacy (lumens per watt)
– Precise cutoff of backlight and uplight (light trespass)
• Improved lumen maintenance over time versus conventional light sources (loss of lumens with
age/hours of use)
• Contains no mercury, lead, toxic chemicals or other known disposal hazards; 100 percent
recyclable
• Produces little infrared light and very low UV emissions
• Enhanced safety and security for drivers, pedestrians and residents
• Enables the use of wireless networked controls
– Lighting performance monitoring
– Proactive maintenance and repair scheduling
– Energy usage metering
– Increased energy efficiency opportunities
– On-demand on/off control and dimming
Before – HPS
After – LED
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