This hit sci.engr.lighting today also, but the discussion was less silly there.
For one thing, there was even mention of statistics for number of crashes and body count to be attributable to snow-obscured LED traffic signals, and that was in combination with drivers being incompetent at driving through intersections controlled by snow-disabled LED traffic signals.
It appears to me so far from what was posted in S.E.L. that the crash count tallied so far is around 40 and the body count tallied so far is 1 nationwide through USA throughout its entire history so far with LED traffic signals. Most that I see were in existence for at least a few years already.
- Don Klipstein ( snipped-for-privacy@misty.com)