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Intelligent Streetlighting The world of streetlighting is becoming smarter, not in the matter of light sources like the new LED lights alone, but in giving rich rewards for road users, authorities, cities and ultimately the environment. LEDs provide a sufficiently even light distribution to meet recommended streetlight uniformity levels, which is valuable in terms of eliminating glare, 'hotspots' and related visibility, safety and energy wastage problems. Color rendering is another benefit of LEDs when it comes to driver safety. Only 25% of all travel by car is at night hours. Yet, this period accounts for 40% of all fatal and serious injuries, according to the Royal Society for the Prevention of Accidents in the U.K. A more recent study, Road traffic accidents: the impact of lighting, conducted by Dr Sotiris Plainis from the Institute of Vision and Optics, at the University of Crete found that on motorways only 2.6% of accidents are fatal where streetlighting is present, compared to 4.3% of accidents where it is not. In the future, a natural solution could come to the fore in streetlighting. Researchers from the Academia Sinica and the National Cheng Kung University in Taipei and Tainan have implanted glowing, sea urchinshaped gold nanoparticles, known as bio Light Emitting Diodes within the leaves of a Bacopa Caroliniana tree. BioLED could be used to make roadside trees luminescent at night. This will save energy and absorb CO2 as the bio LED luminescence will cause the chloroplast to conduct photosynthesis. Chlorophyll  the photosynthetic pigment that gives leaves their green color  is widely known for its ability to absorb certain wavelengths of light. But under certain circumstances, such as being exposed to violet light, it can also produce a light of its own. When exposed to light with a wavelength of about 400nm, the normally greencolored chlorophyll will glow red. This discovery will become the pioneering luminescence idea of our timeturning ordinary trees at the roadside into selfsustaining streetlights.                                                              techfedkerala