Boiledbeans

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December 19, 2009

Its snowing men!

devadutta @ 11:56 pm, GMT +0000 ( 1261267012 ) Play

Traffic lights in regions with heavy snowfall did not have this problem until recently.

What makes present day traffic lights susceptible to this kind distributed devastation by snow (DDbS ;) ) attack?

Snow Covered Stoplights

@Logik: Glad you liked the question sire!

@varun uncle: the interwebs is a small place :P

Cracked by: Raghuvansh , Logik , krudebox , Ps , varuns88 , Rogi , shenoyvarun86 , Gurupad , akhi , byslexia , adiS , umang , p vs np , shashank , Higgers , Shrey Goyal , Ananth , sidsen , dheeraj , madhur , Dibyo , Sandesh , BASAB , Ludwig , joe and Aditya

Answer:

Quoting Logik

Previously regular incandescent bulbs were being used for traffic lights.

recently in some places, a switch was done to energy efficient leds.
Unfortunately, they weren’t hot enough to melt off the snow, leading to many kaboom crashes.


28 Responses to “Its snowing men!”

  1. Raghuvansh
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    Hah. Major east-coast inspiration, eh? Lightbulbs can melt snow, LEDs can’t.


  2. Logik
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    Nice question.

    Previously regular incandescent bulbs were being used for traffic lights.

    recently in some places, a switch was done to energy efficient leds.
    Unfortunately, they weren’t hot enough to melt off the snow, leading to many kaboom crashes.


  3. krudebox
    1

    Energy efficient traffic lights do not produce enough heat to melt the snow.


  4. Ps

    Traffic lights that cant melt snow.

    LED based lights not hot enough to melt snow, ergo you cant see the signal in snowfall.


  5. varuns88
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    The LED traffic lights dont generate enough heat to melt the snow which blocks the lights.


  6. Rogi
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    LEDs produce almost no heat to melt the snow.


  7. Uncle I read this on endgadget day before yesterday!
    LED lights are bleddy efficient so no heat dissipation and hence all the trouble!


  8. LED lights dont produce enough heat to melt the snow


  9. akhi
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    1

    LED lights don’t melt snow.DDbs indeed ;)


  10. byslexia

    LED traffic lights (are so energy efficient that they) do not generate enough heat to melt the snow covering them.


  11. adiS

    using LED lights.. as a result of which enough heat is not generated to melt away the snow


  12. umang

    these are LED traffic lights n they r not hot enough to melt ice unlike bulb traffic lights…


  13. Umm, the use of LEDs in the traffic signals?

    Sometime back, the incandescent bulbs would produce the heat to melt ’em off. Now they don’t.


  14. LED Lights. They are too efficient to melt the snow!


  15. Higgers

    LED lights. Earlier the waste heat given off by the bulbs would melt the snow.


  16. Energy Efficient LED traffic light can’t melt snow


  17. Ananth
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    Energy efficient LED lights don’t produce sufficient heat to melt away the snow that accumulates on the lights. So the light gets blocked, leading to accidents.


  18. sidsen
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    Energy efficient led lights aren\’t hot enough to melt the snow covering it and become visible again. Not a problem that would have been faced earlier with the hot incandescent bulbs.


  19. dheeraj

    The current day traffic lights are made of LEDs…which do not radiate enough heat to melt the snow……unlike the good old ones…..


  20. dheeraj

    the snow that is covering the lights stays put….unlike the incandescent bulbs which radiate lot of heat…which in turn melts the snow….


  21. madhur
    1

    New LED traffic lights can’t melt snow

    Courtesy:
    http://www.autoblog.com/2009/1.....ights-can/


  22. Dibyo
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    they use energy-efficient led lights for the traffic lights, which don’t produce enough heat to melt off snow


  23. Sandesh

    LED bulbs probably can\’t melt the ice. This sounds like Syracuse!


  24. Cant melt snow Salla!!! The LED Lights that is


  25. They changed the light bulbs, didn’t they? Used to be incandescent bulbs which gave off enough heat to melt any snow that fell. Now they have some non-incandescent technology that I can’t remember for the life of me, which allows the snow to freeze?


  26. joe

    LED lights don’t generate enough heat to melt snow.


  27. These are the new, energy-efficient LED traffic lights. Due to accumulation of snow, they’re unable to melt it, as the LEDs remain cool, unlike their incandescent predecessors, which emitted quite a lot of heat. The snow now has to be cleared manually.


  28. Whoa! Last to answer. Thank FSM I got it in time.


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