ghostgum
Member
http://news.yahoo.com/s/ap/20091215/ap_on_re_us/us_snow_covered_stoplights
In north central USA, traffic lights have been converted to LEDs because they save power and last longer. However they don't generate enough heat to melt snow off the traffic lights, leading to obscured lights.
Thankfully we don't have this problem in Australia.
greenvalue
Member
But actually in bright sun light you can see the US style LED traffic lights much better than conventional ones; and in particularly dangerous locations they sometimes install a flashing bright white ring around the red light.
I bet the fix would be still more energy efficient (because only needed a few days per year) than normal bulbs all year round.
Better still I like the Brazilian F1-racing-style lights...: 4x green, 4 times red, they start with green at the top, and the closer to red you're coming the further down the green light is moving, and upon red during the last 20 seconds the light is moving from the top slowly down...
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