Over here they seem to close the schools now when theres little more than an inch of snow on the ground. Health and Safety!
Don't be daft, it's nothing to do with health and safety.
It's not worth spending money on a decent snow infrastructure to cope with the three days of snow a year we have. Also, in an increasingly litigious society it's not worth getting sued for, safer to close. That's not health and safety, that's idiots thinking they deserve money because ice is slippy and they ended up on their arse.