Rule 230
When driving in icy or snowy weather drive with care, even if the roads have been treated keep well back from the road user in front as stopping distances can be ten times greater than on dry roads take care when overtaking vehicles spreading salt or other de-icer, particularly if you are riding a motorcycle or cycle watch out for snowploughs which may throw out snow on either side. Do not overtake them unless the lane you intend to use has been cleared be prepared for the road conditions to change over relatively short distances listen to travel bulletins and take note of variable message signs that may provide information about weather, road and traffic conditions ahead.