Snow Drivers

What is it about white flakes falling from the sky that makes normally sane individuals drive like morons? Coasting through red lights, cutting people off, ignoring stop signs. It's like snow short-circuits their synapses. Or perhaps they think wintry precipitation negates all state traffic laws. And this is before there's any accumulation. At the first sign of snow crystals drifting from on high, all common sense vanishes.