The time of year has come for extreme care on the roads and trails.
It is dark in the morning and early evening: lights and reflectors are a MUST. I use a Nightrider MiNewt on the front paired with a cheap LED Flasher. On the back I have two LED Flashers and a red reflector. I removed the reflectors in my spokes - I think they make the wheels unbalanced.
Ride slow. Roads look wet, but could be icy. The Mercer Slough trail across I-90 is frosty and it lasts all day! I took a slide last year at this time in that same spot - not fun.