[henrikschroder]

Stockholm has had LED traffic lights for over 20 years and no problem with snow buildup whatsoever. We get a wee bit more snow than Istanbul...

[jamesbkel]

Actually, Istanbul can get a fair amount of snow precipitation during short periods of time, which is the main concern for obscuring traffic lights.

[orionlogic]

Well, last year not an inch of snow dropped in city. That short periods of snow times had long passed since the population of the city doubled in last 20 years.

[_b8r0]

True, but previously it has snowed quite heavily when I've been there in the winter, and the effect it has on traffic is quite big, mainly due to the steep hills and people not using decent chains on their tyres.