Watch out for drivers with fogged windows! - Use extra blinkies / side lighting.

Don't hop up or down a curb onto ice! (Took a nasty fall last winter doing this after a few beers).

Don't let yourself get too warm/wet with sweat. You will freeze/cool down really fast if you fall/get hurt/change a flat/etc.

Don't forget to hydrate.

Make sure your rims aren't covered in ice before you take off down a hill!

There is no shame in hitting the snowbank if your brakes are frozen.