Road is bare
Road surfaces can be dry or wet, but are clear of snow or ice.
Road is snow covered
Road surfaces are completely snow covered with no bare sections from one end to the other.
Road is icy
Road surfaces are ice covered or snow packed due to either sleet or wet snow causing road surfaces to be slippery.
Road is partially snow covered
Road surfaces have snow-covered or snow-packed sections. For example, there may be drifted sections of snow covering lanes or the road centre is bare.
Road is snow packed
Road surfaces are completely snow packed with no bare sections from one end to the other.
Road is closed
Road is closed because road surfaces are impossible to travel along due to either continuous snow fall preventing snow removal or lane closures due to a collision.
Visibility is good
Visibility is good when you can see up to the horizon.
Visibility is nil
Visibility is nil when your range of vision is less than 50 metres.
Visibility is fair to poor
Visibility is fair to poor when your range of vision is reduced to 500 metres or less.