Got to be honest i have seen a lot heavier snow than this in the leicester area in the 80's /90's i can remember snow drifts higher than our car, now that would of been a red warning
I think the road's are bad due to it being so cold, we normally have temps just above freezing when we have snow, so the roads are slushy rather than frozen which leads to less problems, temps have been well below freezing all day.