Slow to a speed that suits your visibility and the visibility of the person that may hit you from behind if you are too slow. Wear gear that can be seen, even if it is an add-on vest or belt/tabard, the built in wipers in the Held gloves are great but a wiper of any brand is advantageous, low beam on the headlights and if you have them turn on the fog lights as they diffuse the light nicely to prevent bounce-back.