It's like Fred says here in the uk we see a wee bit snow falling and the country comes to a halt,the council get the road gritters out,when they can be bothered,but by that time it's too late to do any good,except to corrode the underside of your car,the uk should take a look at Scandinavia ,
I work in Norway ,have done for the last 10 years ,never seen a gritter yet,they don't have any problems driving on the snow and ice,the don't have stock piles of grit and salt,it's simple the government say you will fit snow tyres to your vehicle before a fixed date,if you don't you have to pay a hefty fine if you are stopped,