Driving in icy conditions - Overnight freezing can result in a dangerous icy surface to the road and footaths, especially on less frequently use roads and paths. Look for signs of frost on verges etc. Its even more dangerous when roads are just starting to freeze or thaw. The combination of water and ice ads up to an extreamly slippery surface.
Rain freezing on road as it falls (black ice) is an invisible danger, if you skid on black ice it will have a similer effect as aquaplaning and your steering will feel very light. Remember to keep your speed down when driving on ice and be very delicate with the controls of the vehicle.
If its very cold, treat all wet surfaces as though they are frozen, because the probably are. If the road looks wet but there is no sound from the tyres, expect ice.