Solar Powered LED Traffic Lights for India
by Warren McLaren, Sydney 
on 06.21.06
Previously we’ve noted how the move to LED (Light Emitting Diodes) traffic lights can offer significant savings on both energy consumption and costs for cities. We've also advised on how Berlin derived 100% of their electricity for traffic control from renewable sources. It would appear that India is now combining both these attributes into a single traffic single design. The Indian suburb of Nodia is poised to introduce 27 such lights. The main benefit being that traffic flows will be free of disruption when inevitable power failures occur. (An odd counterpoint to this story is that these new lights look like they will be purchased directly by the state. But some solar-powered traffic signals have been previously provided by private interests. Costs were defrayed by allowing limited advertising on the lights. Certainly one way of getting motorists attention, but not likely to improve road safety.) We aren’t sure who will be providing Nodia’s solar lights, but did find Delhi based Envoy, who make similar products, which can operate for three days without fresh exposure to sunshine. Via ::Delhi Newsline.
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Advertising on street lights? Talk about a captive audience :)
it seems as if they are pretty good??
Hi
I am a 3rd year student studying Bsc. in Renewable Energy Technologies.
In Malawi,there is a big problem with our traffic lights such that they frequently face power failures due to power blackouts from our only hydropower grid.Therefore,I would like to do a research project on this by introducing a 2 way power supply system,from solar and grid.With this,if one power system fails, the other one should pick up automatically.
My writing is therefore to seek advice if this was done somewhere.
Thank you.