People are stupid when they drive.
If weather conditions are poor, fog, swirling snow/sleet, that sort of thing, put your bloody lights on.
If the ENTIRE windscreen of your car is covered in snow take it off before you drive. Do not put your hazards on and do it just before you enter a round about, you absolute idiot.
Slush can be slippy, drive slower.
Slush can spray small school kids if you drive through it quickly, don't be a prick.
Your journey is probably going to take longer in bad weather, leave earlier and be prepared to drive slower.
Don't fucking text while driving. Especially -ESPECIALLY -while driving on a busy road in poor weather conditions.
No, you don't have x-ray vision, clear the snow from your mirrors and windows.