Every year more than four million traffic lights use an estimated three billion Kilowatt-hours of electrical energy. Switching to power-efficient LED lamps cuts municipal budget & lowers power consume nationwide. More than 50% of all traffic signals have been transformed to LEDs in the United State.
LED lamps and their advantages:
A lighting emitting diode or LED is a small semiconductor that releases visible light when current goes through it. Unlike traditional incandescent bulbs, there’s no filament. LED traffic signals employ extreme brightness.
Furthermore, LED lights produce light in the required colors, like yellow, green or red, making them perfect for traffic signal. There’s no requirement to filter the light via lens. Consequently, true colors are generated more effectively, with negligible squander of heat energy. LED traffic light use only 10% of the power employed by incandescent lamps. Also, LED lights look much brighter as the light is distributed evenly across the entire surface.
LED lamps last 50 times more than traditional incandescent bulbs because there’re no filaments to burn. LED lights also improves traffic safety as they lessen the number of signal outage and because of their low power use, LEDs are more cost-effective to employ with battery back-up systems. And batteries can keep LED traffic signal working for up to twenty four hours in case of a power cut.
Potential saving with LED light:
Though, the initial costs of LEDS are a bit higher than traditional incandescent bulbs, but it save big in long term. According to a report, the primary cost of a general LED traffic signal ball was about seventy dollars compared to a traditional incandescent signal at twenty dollars. When power use and maintenance expenditures were incorporated, the total operating expenditures of LED lights were about 1/3 that of incandescent signals.
Employing LEDs instead of conventional bulbs can save up to six-hundred dollars at a single junction in 1 year; a single large town could save more than 1 million dollar, relying on how many junctions they’ve. Changing traffic bulbs less frequently saves on labor expenditures also.
Red lights are on about 60% of the time or five-thousand threw-hundred hours per year, and consumer far more power in a traffic signal than yellow or green lights. Often, they’re bigger with a higher wattage. On average, red lights consume 85% of the total power used by a traffic signal. Substituting a red light, like a 150-watt red incandescent directional arrow with a 10-watt LED lamp, can attain the maximum energy savings.