To check the grip on icy roads, it is advisable to perform both a brake test and a turn test. Some other useful facts about driving on slippery roads:

Road conditions are often difficult in 0-degrees weather (celsius).

Freezing rain is probably the worst condition you can come across. This is when rain freezes when it hits the ground and a thin layer of ice forms on the road.

On ice, studded tyres usually have better grip than tyres without studs.

On dry roads, tyres without studs usually have better grip than studded tyres. On dry roads, tyres without studs usually have better grip than studded tyres.

On snow, studded tyres and winter tyres without studs are considered fairly equal. On snow, studded tyres and winter tyres without studs are considered fairly equal.

Keep in mind that even if the road is mostly bare, there may be parts with snow and ice in the shadows. Keep in mind that even if the road is mostly bare, there may be parts with snow and ice in the shadows.

Bridges are often especially slippery because the cold air will lower the temperature of the road both from above and below, and the air is humid. Bridges are often especially slippery because the cold air will lower the temperature of the road both from above and below, and the air is humid.

On snowy roads, it may be especially slippery in the tracks of other vehicles, as the snow is more compressed and slippery there. On snowy roads, it may be especially slippery in the tracks of other vehicles, as the snow is more compressed and slippery there.