Takisawa – Was it the lorry on the M25 you saw on the news? It was carrying LPG so probably better to be a bit cautious than have a massive explosion a couple of feet from people in their cars.
The A34 and M40 were bad as the snow came down quickly and heavily so unlikey that snow plough/gritters would have been able to cover the whole area in time. Then, when a lorry or 2 jack-knife the traffic comes to a halt so the snow settles and the snow ploughs/gritters can’t get through which then makes it worse. Unless you can magic traffic off the roads as soon as something happens, then you are always going to have issues like this.
What they could do is ban lorries and coaches from moving when it snows (like they did in Northern France yesterday), but then people would complain that the shops are empty and people on the coaches could not get where they wanted to go.
There will always be people complaining and blaming someone else about something – it appears to be human nature