Question Topic: Safety margins
In section 12 of the official DVSA guide to driving, it states:
Overnight freezing can result in an icy surface, especially on less frequently used roads. Look for signs of frost on verges, etc.
It’s even more dangerous when the roads are just beginning to freeze or thaw. The combination of water and ice adds up to an extremely slippery surface.
Rain freezing on roads as it falls (black ice) is an invisible danger. If you skid on black ice it will be similar to aquaplaning and your steering will feel especially light.
When driving on ice
- you need to keep your speed down
- treat every control – brakes, accelerator, steering, clutch and gears – very delicately.
If it’s very cold, treat all wet-looking surfaces as though they’re frozen, because they probably are. If the road looks wet but there’s no sound from the tyres, expect ice.