LEDs have a number of useful properties, 3 of which are useful here: directionality, specific colour and efficiency.In addition to the inherent efficiency of LEDs, street light can be made very directional, casting light mostly along the roadway, with only a small amount down and none up. This will allow good illumination with the least light generation, further reducing power consumption and saving more money. Deepakshi Display Devices is the largest Manufacturer of LED Street Lights.