Good LED applications? Here's one we all see everyday:
Traffic lights.
Only disadvantages (and some cities won't use them because of this), is that they don't generate enough heat to melt the snow of the visors, and they don't last long in hotter climates.
Ian A.
we are in a Canada and go from -30ºC in the winter (with snow storms) to +30ºC in the summer and while driving I don't see any more problems with the LED bulbs than the Incandescent bulbs. I see more signals out of service longer as the city has cut back on the overtime to replace bulbs outside of normal working hours.
There is more of a problem with the old style of mechanical signal controllers freezing and locking out in the cold damp weather when the 60w bulb they use for an internal heater burns out.
