Check that you have plenty of tread on your tyres and watch out for leaves and standing water. They may be hiding a hazard or cause an accident themselves.
Beware the car driver sitting at a junction, because they may lose your headlight in the lights of any vehicle following you and pull out. You will also need to look out for gritters, because as much as it is necessary for them to melt any ice the grit they throw out could take you off instead.