First, let's explain the meaning of road traffic lights:

 

Road traffic light is a kind of traffic safety products, is to strengthen road traffic management, reduce traffic accidents attack, progress way using power, improve the traffic of one of the main things.

 

Road traffic light penetration is very suitable for cross, t-shaped intersection, the road traffic signal control machine control, guidance of vehicles and pedestrian safety and orderly traffic. LED (light-emitting diode) is developed over the years as a new type of light source, as intelligent traffic signal lamp, businesses are expected to be LED is guide a lighting professional innovation in the 21st century.

 

Next, let's recall the history of road before the traffic lights:

 

The first road lights, is a British concession in Shanghai in 1928.

 

From the earliest hand in belt to the electrical control of the 1950 s, punctual from using computer control to modern electronic monitoring, supply excellent light merchants will traffic lights on the scientific and initiative in constantly update, development and perfection.

 

Traffic lights command right and wrong, African-American Calais, Morgan, in 1923. After the railway traffic is now using active transform of signal lights for some time. But because the train is a fixed timetable functioning in a single way, and to stop the train is not easy, so on the railway signal using only one instruction: traffic. Highway traffic lights are not the same, it is largely the responsibility of the to inform the car driver to stop the vehicle.

 

Motorists who also don't want to see parking signal. University of Hawaii state of mind, James points out that people in the United States there is a kind of the brake and accelerator and conceited tend to contact each other. He said: when drivers see yellow lights, the in the mind secretly made accelerated prepare. If the red light at the moment, a sense of despair will happen immediately. He thrust deep into the intersection as "mind power area". If his theory to build, this area is in Roy's idea theory should be attributed to the superego rather than in the field of nature.

 

In the end, we points about the meaning of road traffic lights exist:

 

1. The existence of the road traffic lights, a city on behalf of the mature, a "talent" city of the city. This is now "intelligent city" concept, happen to coincide.

2. Humanity's greatest coerce was died, and now in addition to normal human physiological death an accident, the formation of traffic accident death toll has been stubbornly high. Road traffic lights exist is to remind people pay attention to maintain themselves, have security means.

 

3. The road traffic lights is a kind of social and moral character and the social order of a performance.

 

Above all traffic lights is not only the direction of road traffic, but also the main performance of people moral consciousness.