Snow predictable

Brace yourself for the travel chaos stories that will come in the wake of this week's snowfall.
Expect to hear stuff like 'why aren't we more prepared for snow'. Of course it's because it doesn't happen very often we don't waste money on keeping snowploughs in mothballs for most of the year or build trains with heaters.
The Highways Agency advises:

1. Do not travel in severe weather unless your journey is essential
2. Check local and national weather forecasts before setting out and take warm clothes, food, water, boots, a torch and spade
3. Drive with care even after roads are salt treated and keep your distance - it can take 10 times longer to stop in icy conditions

I wonder what percentage of people comply with No2?