I think where you live makes a difference. When I lived in Sheffield in an estate that could only be accessed by driving up and down hills, it was sometimes impossible to get on to the main roads. Where I live now is very flat with no hills so it is much easier to drive. Plus we hardly ever get snow. The other thing is that many people drive to work and combine that with driving their children to school. Driving in the rush hour and during school drop off times, makes this area very heavy in traffic so I can understand why schools decide to close. I think it is a sensible decision in terms of preventing unnecessary road accidents and leaving the roads free for those who really need to use them.