Should be like Germany where they are compulsary. Im fed up of sitting behind front wheel drive cars struggling up icy/snowy lanes cos they dont see the point in winters.
During the winter you will see two types of incident on the TV regularly
1. Drivers unable to get traction (usually front wheel drive without winters on)
2. Overturned cars in ditches (Usually 4x4 drivers who dont know the difference between traction and braking)..... and frequently female!