Currently, The high-power Led application of automotive lighting, lighting, LCD backlighting, and the old-fashioned general traffic lights to replace the time is comes. the new tri-color LED highlight traffic lights are to a wide range of application. In fact, a set of comprehensive, high quality LED traffic lights price is very expensive, but because of the important role of traffic lights in city traffic, every year a large number of traffic lights need to be updated,after all, high profit is conducive to the development of LED production design company, for the entire LED industry will produce a benign stimulation.

Transportation applications, LED products mainly include red, green, yellow signal indication, digital time display, an arrow indication. Products require high lighting during reduce the brightness to avoid glare at night. LED traffic signal light source directing light by plurality of LED, we consider multiple focus when design of the light. and the installation of the LED’s also have some requirements, if the installation inconsistency will affect the uniformity of the light-emitting surface , and therefore the design must consider how to avoid such defects, if the optical design is too simple, the distribution of light signal lamp is mainly rely on the LED perspective to insure lighting in effect. So the LED light distribution and installation requirements are more stringent, otherwise this bad phenomenon will be very obvious.LED traffic signal lamp on the light distribution also have some differences , although have the same intensity distribution requirements. The car headlights in light cut line requirements more stringent. The design as long as the vehicle headlamp is enough light to the appropriate configuration of the place, regardless of where the light is emitted by the designer can be divided into small sub-region of the lens to the light distribution area design, it must meet the use of the signal lamp any work area to observe the signal lamp light-emitting surface, signal patterns are clear and visual effects are uniform. While incandescent and halogen lamps light lights light stable, uniform, but the presence of high energy consumption, low life service time expectancy, easy to produce phantom signal display, color film easy to fade and other defects. If we can reduce the LED die light phenomenon, reducing the light fades so high brightness, low power LED applications in the lights, the lights will definitely bring about revolutionary changes in the signal lamp products.

Application of LED in traffic field mainly has following several aspects:
1, traffic signal lamp. LED signal lamp with its high brightness, high reliability, low use cost, long life and other characteristics, get the favour of city traffic management department.
2, the highway traffic guidance system. With the improvement of the standard of highway construction, LED traffic guidance system has become the standard configuration of product, market demand.
3, induced by urban road traffic, signs. With the traffic congestion in major cities is becoming more and more serious, LED display in the cities are growing rapidly in road traffic guidance.