#led_traffic_light

LED traffic signal fully replaced the existing technology (incandescent bulbs) with its good features. As per survey, major chunk of electricity is consumed by traffic light signals. For better performance and to prevent energy crisis LED lamps use nationwide. Use of LED in traffic signaling trims the municipal budgets and reserve more energy for further usage. Almost every country is using LED based signaling system likewise Boston, Denver, New York City, San Diago.

What are LED lamps and what are the benefits?

LED is light emitting diode which consist a semiconductor that works on 0/1 logic in electronics devices. In which it will emit light when value is 1(current passes through circuit)and off when value is 0.LED doesn’t have filament like incandescent bulbs that’s why it consumes less energy as compare to incandescent bulbs which used in traffic signaling. LED can be used in cluster of LEDs due to its high brightness feature.

LED traffic light based on RED, Green, Yellow or Amber color for almost all locations. LED traffic signal no needs any lens for better visibility. It has versatile feature with good quality, which saves the energy efficiently and reduces heat losses, which is more in case of incandescent lamps. As per power consumption, traffic lights LED operate only 10 percent of total incandescent bulbs consumption, which cannot be ignored contrary it has good visibility in adverse weather condition.

Additionally, traffic lights LED have low maintenance cost which emerges the staff to engage in other projects also. While in incandescent bulbs after every 2000 hours filament should be replaced, else it burns the circuit. LED traffic light has overcome this problem efficiently.

LED traffic lights have played vital role to save energy consumption and minimizes the number of signal outages. LED based traffic signal including mini traffic light not only provide safe traffic signaling but also more economical to use battery based system, which require more expenditure in case of previous technology. Now in minimum cost all LED traffic system has equipped with 24x7 uninterrupted supplies in power outage condition.

How LED Works

LED has power distribution and bandwidth usage in very low around 20-50nm, depending upon the material. Because of this LED produces focused and monochromatic light. It contains phosphor to a blue LED; this blue light can converted into yellow, red, green and whitish blue colors.

Traffic lights is also known as traffic signals, traffic semaphore, traffic lamps and even signal lights or stop lights situated at junction of roads or square. If we have diversion in road, so there should be a traffic light signal. Mainly three signals RED for stop, GREEN for go and YELLOW for warning signal. These signals are based on international protocol, which accepted worldwide.

Firstly, traffic signals used during 1722, in which three traffic police officers had done this job manually. Afterword it had opted by several other countries. Some of states have manual traffic signaling system in which officer indicates colored sign to display signals. Later it has been used in Railways, which has gained huge importance and played vital role to route traffic. Furthermore, with the passage of time, today, almost every traffic junction across the world has led traffic signals.

In traffic signal cycle, at least one side of traffic at junction has the green lights at any moment in the cycle. The delay in this case depends on traffic, conditions of the road, the physical layout present in any of the intersection and important legal requirements. Generally delay not more than 80 seconds and it has many slots depending on road traffic, in dense traffic it will be more as to compare to less traffic.

Traffic signal lights system eliminates criminal activity like robbery, hit, and run cases. There was numerous accidental deaths happened when traffic signal was not used, after usage of signaling accidental death ratio degrades drastically. Still adverse weather condition is major issue for accident in some of countries in which driver unable to sense traffic signal because of bad weather. Various approaches have been proposed to support these area namely VNET (Vehicular ad-hoc network), vast research work is going on this field to minimize accidental death in several countries.

Some unusual light signal design used in various countries for example Double red light, Ramp metering, Timer, bar light etc. Now the time for Smart or Intelligent signaling system, in which an array of sensor based on artificial intelligence route the vehicle and pedestrian traffic. Smart traffic lights powered by LED i.e. LED traffic light systems could be used as part of public transport systems. The signals can be set up to sense the approach of heavy vehicles including buses and changing of the signals in favor, thus boosts the speed as well as efficiency of various sustainable transportation modes.

As the manufacturing and design of LED lights continue to get better, it is finding applications in many areas beyond the houses and industries. There are many countries in the world where LED has replaced most of the traditional incandescent lamps that were used earlier in traffic lights. There are many reasons that make LED best option for traffic signals. Let us look at some of the main advantages of using LED in traffic lights.

1. Provides better visibility:

LED traffic signals easily outperform the traditional traffic signals in terms of performance. Traffic signal using LED provides much better visibility especially when the weather conditions such as rain or dust can make it very hard to get a good sight of the things on the highway. LED lights come with specific divergence angle that provides them better directivity towards the desired direction. Thus, there is no need of reflectors to direct the light downwards. In this way, LED-powered traffic signal lights can deliver better performance with no loss of light due to reflectors. Also, LED lights do not require any colored films to produce the lights of different colors such as red, green, yellow etc. This also saves the loss of energy. Overall, we get high performance with a minimum loss of energy with LED traffic lights.

2. Energy Efficient:

The first thing that impresses everyone about the LED lights is the amount of energy that they consume to give the same output in terms of brightness. If we compare the energy efficiency of an LED traffic light with incandescent bulbs, we find that incandescent bulbs only utilizes about 20% of the supplied energy into visible light whereas the LED lights convert almost the complete energy into the visible light. Normal lamps waste 80% of the energy in the form of heat while LED traffic signals waste less than 5% at the most in the form of heat.

3. Long Life

In the recent few years, traffic management officers have witnessed enhanced functionality of traffic lights with the usage of LED lights and bulbs. Because of this, usage of LED lights today has not only remained confined to only kitchen lights, down lights and domestic lights, but also has found applications for designing of traffic signal lights.

In addition, one can find LED lights usage in the form of automotive lights, flashing signs and various traffic signals. Users may also opt to switch them off and on without facing any problem related to flickering or fading process. However, before experts associated with analyzing of traffic signal LED should highlight about specialties of LED light sources, they want to give a basic overview on light emitting diode.

Overview on LED

LED i.e. Light Emitting Diode is a type of semiconductor electronic component, which is able to produce or emit light. It is different from any other traditional source of light because it does not include mercury or any other similar type of toxic substance. Furthermore, this type of product never emits harmful ultra violet rays, because of which the product acts as an ideal option for various light fixtures in homes and in roads in the form of LED traffic signals. If this is not enough, one can also use it for park lights, garage lights, down lights and many more.

Brightness of LED Lights

Individuals unaware of the specialty of LED light sources and fixtures would obviously want to ask about the brightness of such products. Hence, experts have analyzed that LED lights possess high levels of brightness and even come with color temperature variations found in between 2,500K and 6,500K. In this way, you may observe these lights even during daytime.

Lifetime of the Product

LED lights are actually the light emitting diodes and they are highly becoming popular in the whole world now because of the immense benefits that comes along with these LED lights. These LED lights are therefore being used in a variety of things now and one such thing is the traffic lights. Now almost all the traffic lights are made using these LED traffic lights only.

LED Traffic Lights

As discussed above, that these LED lights are used in LED traffic lights and this is because the intensity if these LED lights is much better than the other lights which are not made using the LED lights. Also the life of the LED Traffic Lights is much more as compared to any other lights which are used in the traffic signals. These lights are so good that they can be viewed from afar away distance too and hence making them more visible to the people on road and hence preventing all the problems which could happen.

Traffic Signal Lights

The benefits of these traffic signal lights are not hidden from anyone and that is why the governments of different places are themselves looking into this matter and using these traffic signal lights at different places. These Traffic Signal Lights are highly useful on the roads and at different other places too and hence the demand and as well as the need of these traffic signal lights in the current scenario is very high.

LED Traffic Signals

Now the question arises why only the Led lights are now being used in making these traffic signal lights and the answer to this question is that these LED lights increase the work efficiency and as well as the quality of these traffic signal lights by many folds and hence these LED lights are being used in these traffic signals now. Although these lights are bit expensive as compared to the other lights but the benefits which comes along with these LED lights makes them worth it.

Traffic Signals LED

Traffic lights are something, which can be seen very commonly on the streets, and the main motive of these traffic lights is to maintain the traffic and to maintain the well functioning of the traffic. This is because, the traffic nowadays has increased a lot, everyone has their own vehicle and also there are a lot of people who are having more than one vehicles with them and this has resulted into a really high traffic problems. Therefore, the role of these traffic lights is very crucial as these traffic lights only maintain this increasing traffic. Moreover, there is now the evolution in these traffic lights as there are LED Traffic Light available and these are of much higher quality than those earlier traffic lights.

Traffic Signal Lights

Traffic signals are installed on all the major streets and hence they help in the perfect functioning of the smooth running of the traffic. These traffic signal lights are really helpful and the government has passed the strict rules to follow these traffic signal lights and their high fines for a person not following these traffic signal lights.

LED Traffic Signals

LED lights are basically the light emitting diodes and these LEDs are highly replacing the earlier manufactured bulbs and lights because of the benefits which come along with these LED lights and one such thing in which LED is now being used is our traffic signals. You can find the LED Traffic Signals at various different streets. These LED signals are being installed in the streets because these signals are much better than the earlier produced traffic signals. This is because the life of the signals, which are made from these LED lights, is very long, also the brightness of the light is quite sharper as compared to a normal bulb, and hence these lights can be viewed from a long distance too.

Traffic Signal LED

Since the roads and lanes are so busy today, crossing a road especially with children or luggage is very difficult without proper traffic rules. And the first thing of the traffic rule includes the traffic lights and following them. When the traffic lights glow any of the three colours, the vehicles and the pedestrians are supposed to follow the lights and move accordingly.

We are all aware of the 3 lights; RED, YELLOW and GREEN. The Red stands for stopping, the Yellow for Getting Ready and the Green sign tells us to move. The traffic signals for busy roads change colours within a duration of 5 minutes where one change changes to next within 2 minutes. In this way the traffic on the road can be maintained without ever creating a huge waiting traffic. This also help the drivers to no break unnecessarily the traffic rules. The Traffic warning Lights thus help us to maintain rules and save people from accidents. These lights can also manipulate time according to you. You can switch on these lights when you require thus these lights are often better for children.

The Most Important Use Of Traffic Warning Light After Working As Traffic Signal

There is another big use for this kind of light. We can sue the same light to stop vehicles from choosing a way while the road is under construction or where an accident has occurred. Traffic warning Signals are often placed on a mountain road to prevent people from going towards a risky lane. The Red traffic light tells people to make a stop and then you can follow the direction so that you can change your path before you get into a risky zone. The same light is used for blocking traffic at the construction site.

How Does It Help to Maintain Road Rules?

Every year, about 4 millions of traffic lights consume about 3 billion kilowatt hours of the power or electricity. Huge consumption has resulted in endangering of available energy resources across the world. Hence, most of the traffic control departments, officers and authorities have started switching to LED traffic light systems, which are of energy-efficient lighting sources play big roles in reducing municipal budget and in reduction of nationwide energy consumption.

If you look over the scenario in different regions and cities of United States, you will find about 50 percent of traffic signals have undergone conversion to Light Emitting Diodes. Even one would observe this type of scenario in few big cities of United States, like Denver, Boston, Philadelphia, New York City, Seattle and San Diego.

Light emitting diode is a small size semiconductor that emits lights whenever any electric current goes from it. Bulbs and lighting systems powered by LEDs do not have any filament. LED traffic signals utilize LEDs of very high brightness and connect them together to create a cluster that comprises of about hundred LEDs.

LED lights produce light of only desired colors, like green, yellow or red, which make them ideal solutions to use as traffic signals. In this case, individuals do not require filtration of the light by using lenses. In this way, such lighting systems produce true colors with highest possible efficiency and cause less possible wastage of heat energy.

One more noticing fact about traffic signal lights powered by LED is that they consume approximately 10 percent of the total energy consumed by any traditional incandescent bulbs or lamps. For instance, LED lights are able to consume only 10 watts to 25 watts than incandescent bulbs, which are able to consume 150 watts.

Moreover, traffic signal LED systems give benefits during harsh weather conditions, as light emitted from LED bulbs distribute equally across the complete surface. LED lamps usually last for about 100,000 hours, which is about 50 times higher as compared to any of the incandescent bulbs working only for 2 hours. Reason for this is that such lamps and bulbs do not have any filament for burning out.