Here's what you missed about where they are approved
Autosocks approvals.
WRONG, don't need your lecture! I don't need to rethink my tires or how I drive. Been driving for 75 years, never had snow, icy or wet conditions mishap. I am very safety conscious and always have appropriate tires and go slower than conditions will allow. I've seen ice conditions where 18 wheelers were stopped in a line but sliding into one another. I was 4 wheel chained and able to creep and had steering control. If I have to chain up I'll always chain all four.
Cheers!