Traffic light

Traffic lights are devices used in road intersections or pedestrian crossings to control traffic and keep pedestrians safe. They are very useful for the smooth and uninterrupted movement of vehicles and pedestrians during heavy traffic on the roads. They play a significant role in controlling traffic at peak hours, without a traffic cop. Modern traffic lights came into use from the 20th century.

There are three phases and phase four traffic lights in use. Generally, a traffic light system has three lights. A green light on the bottom of the stack light indicates traffic to proceed, a yellow light warns amid traffic to slow down and prepare to stop, and a red light on top to indicate the traffic stop.

Traditionally, traffic lights have halogen bulbs. These lights consume lot of energy. They are controlled by microcontrollers. With the invention of light emitting diodes (LEDs), these traditional traffic lights have been replaced with traffic lights LED. The main advantages of LED lights are brighter are, but save energy and last longer. They consume 83 percent less energy than incandescent bulbs. Depending on the size and color, which consume between 8 and 25 watts of energy. But, in the case of halogen lamps, the use of energy is between 67 and 150 watts.

Most modern traffic lights with LEDs have several advantages over incandescent lights. Unlike traditional incandescent bulbs, they do not use reflectors. They are more visible and have the greatest light intensity. They have the ability to absorb the solar light which enters the lens.

Until recently, the implementation of LED lights require a heavy investment in terms of operations, reliability problems and high costs. But with the latest technology, LED traffic lights have proven to be economical and viable solution to save energy. Traffic lights are needed throughout the day. LED traffic lights are more energy efficient and save you thousands of dollars worth a year .......