Recent technical developments overseas have produced Snow Socks or Auto Socks, a type of fabric sleeve or sock that can be placed over wheels quickly and easily to provide snow traction. These are designed as a solution for vehicles that are unable to fit standard chains (due to clearances in the wheel arch) or to protect the vehicle rims from possible damage from rubbing chains.
Snow Socks are not considered chains by either Vic Roads (Victoria) or the RTA (New South Wales) and hence do not satisfy the requirement to carry or fit chains, however in NSW they are permitted as supplemental traction devices for 4WD / AWD vehicles.
The RTA (NSW) have issued a new Vehicle Standards Information (VSI) No. 57 for "Driving in snow and ice conditions"  as a reference for businesses and consumers.